Primer commit

venv/lib/python3.11/site-packages/zope/interface/__init__.py

@@ -0,0 +1,93 @@
+##############################################################################
+#
+# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Interfaces
+
+This package implements the Python "scarecrow" proposal.
+
+The package exports two objects, `Interface` and `Attribute` directly. It also
+exports several helper methods. Interface is used to create an interface with
+a class statement, as in:
+
+  class IMyInterface(Interface):
+    '''Interface documentation
+    '''
+
+    def meth(arg1, arg2):
+        '''Documentation for meth
+        '''
+
+    # Note that there is no self argument
+
+To find out what you can do with interfaces, see the interface
+interface, `IInterface` in the `interfaces` module.
+
+The package has several public modules:
+
+  o `declarations` provides utilities to declare interfaces on objects. It
+    also provides a wide range of helpful utilities that aid in managing
+    declared interfaces. Most of its public names are however imported here.
+
+  o `document` has a utility for documenting an interface as structured text.
+
+  o `exceptions` has the interface-defined exceptions
+
+  o `interfaces` contains a list of all public interfaces for this package.
+
+  o `verify` has utilities for verifying implementations of interfaces.
+
+See the module doc strings for more information.
+"""
+__docformat__ = 'restructuredtext'
+# pylint:disable=wrong-import-position,unused-import
+from zope.interface.interface import Interface
+from zope.interface.interface import _wire
+
+# Need to actually get the interface elements to implement the right interfaces
+_wire()
+del _wire
+
+from zope.interface.declarations import Declaration
+from zope.interface.declarations import alsoProvides
+from zope.interface.declarations import classImplements
+from zope.interface.declarations import classImplementsFirst
+from zope.interface.declarations import classImplementsOnly
+from zope.interface.declarations import directlyProvidedBy
+from zope.interface.declarations import directlyProvides
+from zope.interface.declarations import implementedBy
+from zope.interface.declarations import implementer
+from zope.interface.declarations import implementer_only
+from zope.interface.declarations import moduleProvides
+from zope.interface.declarations import named
+from zope.interface.declarations import noLongerProvides
+from zope.interface.declarations import providedBy
+from zope.interface.declarations import provider
+
+from zope.interface.exceptions import Invalid
+
+from zope.interface.interface import Attribute
+from zope.interface.interface import interfacemethod
+from zope.interface.interface import invariant
+from zope.interface.interface import taggedValue
+
+# The following are to make spec pickles cleaner
+from zope.interface.declarations import Provides
+
+
+from zope.interface.interfaces import IInterfaceDeclaration
+
+moduleProvides(IInterfaceDeclaration)
+
+__all__ = ('Interface', 'Attribute') + tuple(IInterfaceDeclaration)
+
+assert all(k in globals() for k in __all__)

venv/lib/python3.11/site-packages/zope/interface/_compat.py

@@ -0,0 +1,135 @@
+##############################################################################
+#
+# Copyright (c) 2006 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""
+Support functions for dealing with differences in platforms, including Python
+versions and implementations.
+
+This file should have no imports from the rest of zope.interface because it is
+used during early bootstrapping.
+"""
+import os
+import sys
+
+
+def _normalize_name(name):
+    if isinstance(name, bytes):
+        name = str(name, 'ascii')
+    if isinstance(name, str):
+        return name
+    raise TypeError("name must be a string or ASCII-only bytes")
+
+PYPY = hasattr(sys, 'pypy_version_info')
+
+
+def _c_optimizations_required():
+    """
+    Return a true value if the C optimizations are required.
+
+    This uses the ``PURE_PYTHON`` variable as documented in `_use_c_impl`.
+    """
+    pure_env = os.environ.get('PURE_PYTHON')
+    require_c = pure_env == "0"
+    return require_c
+
+
+def _c_optimizations_available():
+    """
+    Return the C optimization module, if available, otherwise
+    a false value.
+
+    If the optimizations are required but not available, this
+    raises the ImportError.
+
+    This does not say whether they should be used or not.
+    """
+    catch = () if _c_optimizations_required() else (ImportError,)
+    try:
+        from zope.interface import _zope_interface_coptimizations as c_opt
+        return c_opt
+    except catch: # pragma: no cover (only Jython doesn't build extensions)
+        return False
+
+
+def _c_optimizations_ignored():
+    """
+    The opposite of `_c_optimizations_required`.
+    """
+    pure_env = os.environ.get('PURE_PYTHON')
+    return pure_env is not None and pure_env != "0"
+
+
+def _should_attempt_c_optimizations():
+    """
+    Return a true value if we should attempt to use the C optimizations.
+
+    This takes into account whether we're on PyPy and the value of the
+    ``PURE_PYTHON`` environment variable, as defined in `_use_c_impl`.
+    """
+    is_pypy = hasattr(sys, 'pypy_version_info')
+
+    if _c_optimizations_required():
+        return True
+    if is_pypy:
+        return False
+    return not _c_optimizations_ignored()
+
+
+def _use_c_impl(py_impl, name=None, globs=None):
+    """
+    Decorator. Given an object implemented in Python, with a name like
+    ``Foo``, import the corresponding C implementation from
+    ``zope.interface._zope_interface_coptimizations`` with the name
+    ``Foo`` and use it instead.
+
+    If the ``PURE_PYTHON`` environment variable is set to any value
+    other than ``"0"``, or we're on PyPy, ignore the C implementation
+    and return the Python version. If the C implementation cannot be
+    imported, return the Python version. If ``PURE_PYTHON`` is set to
+    0, *require* the C implementation (let the ImportError propagate);
+    note that PyPy can import the C implementation in this case (and all
+    tests pass).
+
+    In all cases, the Python version is kept available. in the module
+    globals with the name ``FooPy`` and the name ``FooFallback`` (both
+    conventions have been used; the C implementation of some functions
+    looks for the ``Fallback`` version, as do some of the Sphinx
+    documents).
+
+    Example::
+
+        @_use_c_impl
+        class Foo(object):
+            ...
+    """
+    name = name or py_impl.__name__
+    globs = globs or sys._getframe(1).f_globals
+
+    def find_impl():
+        if not _should_attempt_c_optimizations():
+            return py_impl
+
+        c_opt = _c_optimizations_available()
+        if not c_opt: # pragma: no cover (only Jython doesn't build extensions)
+            return py_impl
+
+        __traceback_info__ = c_opt
+        return getattr(c_opt, name)
+
+    c_impl = find_impl()
+    # Always make available by the FooPy name and FooFallback
+    # name (for testing and documentation)
+    globs[name + 'Py'] = py_impl
+    globs[name + 'Fallback'] = py_impl
+
+    return c_impl

venv/lib/python3.11/site-packages/zope/interface/_flatten.py

@@ -0,0 +1,35 @@
+##############################################################################
+#
+# Copyright (c) 2002 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Adapter-style interface registry
+
+See Adapter class.
+"""
+from zope.interface import Declaration
+
+def _flatten(implements, include_None=0):
+
+    try:
+        r = implements.flattened()
+    except AttributeError:
+        if implements is None:
+            r=()
+        else:
+            r = Declaration(implements).flattened()
+
+    if not include_None:
+        return r
+
+    r = list(r)
+    r.append(None)
+    return r

venv/lib/python3.11/site-packages/zope/interface/advice.py

@@ -0,0 +1,118 @@
+##############################################################################
+#
+# Copyright (c) 2003 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Class advice.
+
+This module was adapted from 'protocols.advice', part of the Python
+Enterprise Application Kit (PEAK).  Please notify the PEAK authors
+(pje@telecommunity.com and tsarna@sarna.org) if bugs are found or
+Zope-specific changes are required, so that the PEAK version of this module
+can be kept in sync.
+
+PEAK is a Python application framework that interoperates with (but does
+not require) Zope 3 and Twisted.  It provides tools for manipulating UML
+models, object-relational persistence, aspect-oriented programming, and more.
+Visit the PEAK home page at http://peak.telecommunity.com for more information.
+"""
+
+from types import FunctionType
+
+__all__ = [
+    'determineMetaclass',
+    'getFrameInfo',
+    'isClassAdvisor',
+    'minimalBases',
+]
+
+import sys
+
+def getFrameInfo(frame):
+    """Return (kind,module,locals,globals) for a frame
+
+    'kind' is one of "exec", "module", "class", "function call", or "unknown".
+    """
+
+    f_locals = frame.f_locals
+    f_globals = frame.f_globals
+
+    sameNamespace = f_locals is f_globals
+    hasModule = '__module__' in f_locals
+    hasName = '__name__' in f_globals
+
+    sameName = hasModule and hasName
+    sameName = sameName and f_globals['__name__']==f_locals['__module__']
+
+    module = hasName and sys.modules.get(f_globals['__name__']) or None
+
+    namespaceIsModule = module and module.__dict__ is f_globals
+
+    if not namespaceIsModule:
+        # some kind of funky exec
+        kind = "exec"
+    elif sameNamespace and not hasModule:
+        kind = "module"
+    elif sameName and not sameNamespace:
+        kind = "class"
+    elif not sameNamespace:
+        kind = "function call"
+    else: # pragma: no cover
+        # How can you have f_locals is f_globals, and have '__module__' set?
+        # This is probably module-level code, but with a '__module__' variable.
+        kind = "unknown"
+    return kind, module, f_locals, f_globals
+
+
+def isClassAdvisor(ob):
+    """True if 'ob' is a class advisor function"""
+    return isinstance(ob,FunctionType) and hasattr(ob,'previousMetaclass')
+
+
+def determineMetaclass(bases, explicit_mc=None):
+    """Determine metaclass from 1+ bases and optional explicit __metaclass__"""
+
+    meta = [getattr(b,'__class__',type(b)) for b in bases]
+
+    if explicit_mc is not None:
+        # The explicit metaclass needs to be verified for compatibility
+        # as well, and allowed to resolve the incompatible bases, if any
+        meta.append(explicit_mc)
+
+    if len(meta)==1:
+        # easy case
+        return meta[0]
+
+    candidates = minimalBases(meta) # minimal set of metaclasses
+
+    if len(candidates)>1:
+        # We could auto-combine, but for now we won't...
+        raise TypeError("Incompatible metatypes", bases)
+
+    # Just one, return it
+    return candidates[0]
+
+
+def minimalBases(classes):
+    """Reduce a list of base classes to its ordered minimum equivalent"""
+    candidates = []
+
+    for m in classes:
+        for n in classes:
+            if issubclass(n,m) and m is not n:
+                break
+        else:
+            # m has no subclasses in 'classes'
+            if m in candidates:
+                candidates.remove(m)    # ensure that we're later in the list
+            candidates.append(m)
+
+    return candidates

venv/lib/python3.11/site-packages/zope/interface/common/__init__.py

@@ -0,0 +1,272 @@
+##############################################################################
+# Copyright (c) 2020 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+##############################################################################
+
+import itertools
+from types import FunctionType
+
+from zope.interface import classImplements
+from zope.interface import Interface
+from zope.interface.interface import fromFunction
+from zope.interface.interface import InterfaceClass
+from zope.interface.interface import _decorator_non_return
+
+__all__ = [
+    # Nothing public here.
+]
+
+
+# pylint:disable=inherit-non-class,
+# pylint:disable=no-self-argument,no-method-argument
+# pylint:disable=unexpected-special-method-signature
+
+class optional:
+    # Apply this decorator to a method definition to make it
+    # optional (remove it from the list of required names), overriding
+    # the definition inherited from the ABC.
+    def __init__(self, method):
+        self.__doc__ = method.__doc__
+
+
+class ABCInterfaceClass(InterfaceClass):
+    """
+    An interface that is automatically derived from a
+    :class:`abc.ABCMeta` type.
+
+    Internal use only.
+
+    The body of the interface definition *must* define
+    a property ``abc`` that is the ABC to base the interface on.
+
+    If ``abc`` is *not* in the interface definition, a regular
+    interface will be defined instead (but ``extra_classes`` is still
+    respected).
+
+    Use the ``@optional`` decorator on method definitions if
+    the ABC defines methods that are not actually required in all cases
+    because the Python language has multiple ways to implement a protocol.
+    For example, the ``iter()`` protocol can be implemented with
+    ``__iter__`` or the pair ``__len__`` and ``__getitem__``.
+
+    When created, any existing classes that are registered to conform
+    to the ABC are declared to implement this interface. This is *not*
+    automatically updated as the ABC registry changes. If the body of the
+    interface definition defines ``extra_classes``, it should be a
+    tuple giving additional classes to declare implement the interface.
+
+    Note that this is not fully symmetric. For example, it is usually
+    the case that a subclass relationship carries the interface
+    declarations over::
+
+        >>> from zope.interface import Interface
+        >>> class I1(Interface):
+        ...     pass
+        ...
+        >>> from zope.interface import implementer
+        >>> @implementer(I1)
+        ... class Root(object):
+        ...     pass
+        ...
+        >>> class Child(Root):
+        ...     pass
+        ...
+        >>> child = Child()
+        >>> isinstance(child, Root)
+        True
+        >>> from zope.interface import providedBy
+        >>> list(providedBy(child))
+        [<InterfaceClass __main__.I1>]
+
+    However, that's not the case with ABCs and ABC interfaces. Just
+    because ``isinstance(A(), AnABC)`` and ``isinstance(B(), AnABC)``
+    are both true, that doesn't mean there's any class hierarchy
+    relationship between ``A`` and ``B``, or between either of them
+    and ``AnABC``. Thus, if ``AnABC`` implemented ``IAnABC``, it would
+    not follow that either ``A`` or ``B`` implements ``IAnABC`` (nor
+    their instances provide it)::
+
+        >>> class SizedClass(object):
+        ...     def __len__(self): return 1
+        ...
+        >>> from collections.abc import Sized
+        >>> isinstance(SizedClass(), Sized)
+        True
+        >>> from zope.interface import classImplements
+        >>> classImplements(Sized, I1)
+        None
+        >>> list(providedBy(SizedClass()))
+        []
+
+    Thus, to avoid conflicting assumptions, ABCs should not be
+    declared to implement their parallel ABC interface. Only concrete
+    classes specifically registered with the ABC should be declared to
+    do so.
+
+    .. versionadded:: 5.0.0
+    """
+
+    # If we could figure out invalidation, and used some special
+    # Specification/Declaration instances, and override the method ``providedBy`` here,
+    # perhaps we could more closely integrate with ABC virtual inheritance?
+
+    def __init__(self, name, bases, attrs):
+        # go ahead and give us a name to ease debugging.
+        self.__name__ = name
+        extra_classes = attrs.pop('extra_classes', ())
+        ignored_classes = attrs.pop('ignored_classes', ())
+
+        if 'abc' not in attrs:
+            # Something like ``IList(ISequence)``: We're extending
+            # abc interfaces but not an ABC interface ourself.
+            InterfaceClass.__init__(self, name, bases, attrs)
+            ABCInterfaceClass.__register_classes(self, extra_classes, ignored_classes)
+            self.__class__ = InterfaceClass
+            return
+
+        based_on = attrs.pop('abc')
+        self.__abc = based_on
+        self.__extra_classes = tuple(extra_classes)
+        self.__ignored_classes = tuple(ignored_classes)
+
+        assert name[1:] == based_on.__name__, (name, based_on)
+        methods = {
+            # Passing the name is important in case of aliases,
+            # e.g., ``__ror__ = __or__``.
+            k: self.__method_from_function(v, k)
+            for k, v in vars(based_on).items()
+            if isinstance(v, FunctionType) and not self.__is_private_name(k)
+            and not self.__is_reverse_protocol_name(k)
+        }
+
+        methods['__doc__'] = self.__create_class_doc(attrs)
+        # Anything specified in the body takes precedence.
+        methods.update(attrs)
+        InterfaceClass.__init__(self, name, bases, methods)
+        self.__register_classes()
+
+    @staticmethod
+    def __optional_methods_to_docs(attrs):
+        optionals = {k: v for k, v in attrs.items() if isinstance(v, optional)}
+        for k in optionals:
+            attrs[k] = _decorator_non_return
+
+        if not optionals:
+            return ''
+
+        docs = "\n\nThe following methods are optional:\n - " + "\n-".join(
+            "{}\n{}".format(k, v.__doc__) for k, v in optionals.items()
+        )
+        return docs
+
+    def __create_class_doc(self, attrs):
+        based_on = self.__abc
+        def ref(c):
+            mod = c.__module__
+            name = c.__name__
+            if mod == str.__module__:
+                return "`%s`" % name
+            if mod == '_io':
+                mod = 'io'
+            return "`{}.{}`".format(mod, name)
+        implementations_doc = "\n - ".join(
+            ref(c)
+            for c in sorted(self.getRegisteredConformers(), key=ref)
+        )
+        if implementations_doc:
+            implementations_doc = "\n\nKnown implementations are:\n\n - " + implementations_doc
+
+        based_on_doc = (based_on.__doc__ or '')
+        based_on_doc = based_on_doc.splitlines()
+        based_on_doc = based_on_doc[0] if based_on_doc else ''
+
+        doc = """Interface for the ABC `{}.{}`.\n\n{}{}{}""".format(
+            based_on.__module__, based_on.__name__,
+            attrs.get('__doc__', based_on_doc),
+            self.__optional_methods_to_docs(attrs),
+            implementations_doc
+        )
+        return doc
+
+
+    @staticmethod
+    def __is_private_name(name):
+        if name.startswith('__') and name.endswith('__'):
+            return False
+        return name.startswith('_')
+
+    @staticmethod
+    def __is_reverse_protocol_name(name):
+        # The reverse names, like __rand__,
+        # aren't really part of the protocol. The interpreter has
+        # very complex behaviour around invoking those. PyPy
+        # doesn't always even expose them as attributes.
+        return name.startswith('__r') and name.endswith('__')
+
+    def __method_from_function(self, function, name):
+        method = fromFunction(function, self, name=name)
+        # Eliminate the leading *self*, which is implied in
+        # an interface, but explicit in an ABC.
+        method.positional = method.positional[1:]
+        return method
+
+    def __register_classes(self, conformers=None, ignored_classes=None):
+        # Make the concrete classes already present in our ABC's registry
+        # declare that they implement this interface.
+        conformers = conformers if conformers is not None else self.getRegisteredConformers()
+        ignored = ignored_classes if ignored_classes is not None else self.__ignored_classes
+        for cls in conformers:
+            if cls in ignored:
+                continue
+            classImplements(cls, self)
+
+    def getABC(self):
+        """
+        Return the ABC this interface represents.
+        """
+        return self.__abc
+
+    def getRegisteredConformers(self):
+        """
+        Return an iterable of the classes that are known to conform to
+        the ABC this interface parallels.
+        """
+        based_on = self.__abc
+
+        # The registry only contains things that aren't already
+        # known to be subclasses of the ABC. But the ABC is in charge
+        # of checking that, so its quite possible that registrations
+        # are in fact ignored, winding up just in the _abc_cache.
+        try:
+            registered = list(based_on._abc_registry) + list(based_on._abc_cache)
+        except AttributeError:
+            # Rewritten in C in CPython 3.7.
+            # These expose the underlying weakref.
+            from abc import _get_dump
+            data = _get_dump(based_on)
+            registry = data[0]
+            cache = data[1]
+            registered = [x() for x in itertools.chain(registry, cache)]
+            registered = [x for x in registered if x is not None]
+
+        return set(itertools.chain(registered, self.__extra_classes))
+
+
+def _create_ABCInterface():
+    # It's a two-step process to create the root ABCInterface, because
+    # without specifying a corresponding ABC, using the normal constructor
+    # gets us a plain InterfaceClass object, and there is no ABC to associate with the
+    # root.
+    abc_name_bases_attrs = ('ABCInterface', (Interface,), {})
+    instance = ABCInterfaceClass.__new__(ABCInterfaceClass, *abc_name_bases_attrs)
+    InterfaceClass.__init__(instance, *abc_name_bases_attrs)
+    return instance
+
+ABCInterface = _create_ABCInterface()

venv/lib/python3.11/site-packages/zope/interface/common/builtins.py

@@ -0,0 +1,119 @@
+##############################################################################
+# Copyright (c) 2020 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+##############################################################################
+"""
+Interface definitions for builtin types.
+
+After this module is imported, the standard library types will declare
+that they implement the appropriate interface.
+
+.. versionadded:: 5.0.0
+"""
+
+from zope.interface import classImplements
+
+from zope.interface.common import collections
+from zope.interface.common import numbers
+from zope.interface.common import io
+
+__all__ = [
+    'IList',
+    'ITuple',
+    'ITextString',
+    'IByteString',
+    'INativeString',
+    'IBool',
+    'IDict',
+    'IFile',
+]
+
+# pylint:disable=no-self-argument
+class IList(collections.IMutableSequence):
+    """
+    Interface for :class:`list`
+    """
+    extra_classes = (list,)
+
+    def sort(key=None, reverse=False):
+        """
+        Sort the list in place and return None.
+
+        *key* and *reverse* must be passed by name only.
+        """
+
+
+class ITuple(collections.ISequence):
+    """
+    Interface for :class:`tuple`
+    """
+    extra_classes = (tuple,)
+
+
+class ITextString(collections.ISequence):
+    """
+    Interface for text ("unicode") strings.
+
+    This is :class:`str`
+    """
+    extra_classes = (str,)
+
+
+class IByteString(collections.IByteString):
+    """
+    Interface for immutable byte strings.
+
+    On all Python versions this is :class:`bytes`.
+
+    Unlike :class:`zope.interface.common.collections.IByteString`
+    (the parent of this interface) this does *not* include
+    :class:`bytearray`.
+    """
+    extra_classes = (bytes,)
+
+
+class INativeString(ITextString):
+    """
+    Interface for native strings.
+
+    On all Python versions, this is :class:`str`. Tt extends
+    :class:`ITextString`.
+    """
+# We're not extending ABCInterface so extra_classes won't work
+classImplements(str, INativeString)
+
+
+class IBool(numbers.IIntegral):
+    """
+    Interface for :class:`bool`
+    """
+    extra_classes = (bool,)
+
+
+class IDict(collections.IMutableMapping):
+    """
+    Interface for :class:`dict`
+    """
+    extra_classes = (dict,)
+
+
+class IFile(io.IIOBase):
+    """
+    Interface for :class:`file`.
+
+    It is recommended to use the interfaces from :mod:`zope.interface.common.io`
+    instead of this interface.
+
+    On Python 3, there is no single implementation of this interface;
+    depending on the arguments, the :func:`open` builtin can return
+    many different classes that implement different interfaces from
+    :mod:`zope.interface.common.io`.
+    """
+    extra_classes = ()

venv/lib/python3.11/site-packages/zope/interface/common/collections.py

@@ -0,0 +1,253 @@
+##############################################################################
+# Copyright (c) 2020 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+##############################################################################
+"""
+Interface definitions paralleling the abstract base classes defined in
+:mod:`collections.abc`.
+
+After this module is imported, the standard library types will declare
+that they implement the appropriate interface. While most standard
+library types will properly implement that interface (that
+is, ``verifyObject(ISequence, list()))`` will pass, for example), a few might not:
+
+    - `memoryview` doesn't feature all the defined methods of
+      ``ISequence`` such as ``count``; it is still declared to provide
+      ``ISequence`` though.
+
+    - `collections.deque.pop` doesn't accept the ``index`` argument of
+      `collections.abc.MutableSequence.pop`
+
+    - `range.index` does not accept the ``start`` and ``stop`` arguments.
+
+.. versionadded:: 5.0.0
+"""
+
+import sys
+
+from abc import ABCMeta
+from collections import abc
+from collections import OrderedDict
+from collections import UserList
+from collections import UserDict
+from collections import UserString
+
+from zope.interface.common import ABCInterface
+from zope.interface.common import optional
+
+# pylint:disable=inherit-non-class,
+# pylint:disable=no-self-argument,no-method-argument
+# pylint:disable=unexpected-special-method-signature
+# pylint:disable=no-value-for-parameter
+
+
+def _new_in_ver(name, ver,
+                bases_if_missing=(ABCMeta,),
+                register_if_missing=()):
+    if ver:
+        return getattr(abc, name)
+
+    # TODO: It's a shame to have to repeat the bases when
+    # the ABC is missing. Can we DRY that?
+    missing = ABCMeta(name, bases_if_missing, {
+        '__doc__': "The ABC %s is not defined in this version of Python." % (
+            name
+        ),
+    })
+
+    for c in register_if_missing:
+        missing.register(c)
+
+    return missing
+
+__all__ = [
+    'IAsyncGenerator',
+    'IAsyncIterable',
+    'IAsyncIterator',
+    'IAwaitable',
+    'ICollection',
+    'IContainer',
+    'ICoroutine',
+    'IGenerator',
+    'IHashable',
+    'IItemsView',
+    'IIterable',
+    'IIterator',
+    'IKeysView',
+    'IMapping',
+    'IMappingView',
+    'IMutableMapping',
+    'IMutableSequence',
+    'IMutableSet',
+    'IReversible',
+    'ISequence',
+    'ISet',
+    'ISized',
+    'IValuesView',
+]
+
+class IContainer(ABCInterface):
+    abc = abc.Container
+
+    @optional
+    def __contains__(other):
+        """
+        Optional method. If not provided, the interpreter will use
+        ``__iter__`` or the old ``__getitem__`` protocol
+        to implement ``in``.
+        """
+
+class IHashable(ABCInterface):
+    abc = abc.Hashable
+
+class IIterable(ABCInterface):
+    abc = abc.Iterable
+
+    @optional
+    def __iter__():
+        """
+        Optional method. If not provided, the interpreter will
+        implement `iter` using the old ``__getitem__`` protocol.
+        """
+
+class IIterator(IIterable):
+    abc = abc.Iterator
+
+class IReversible(IIterable):
+    abc = _new_in_ver('Reversible', True, (IIterable.getABC(),))
+
+    @optional
+    def __reversed__():
+        """
+        Optional method. If this isn't present, the interpreter
+        will use ``__len__`` and ``__getitem__`` to implement the
+        `reversed` builtin.
+        """
+
+class IGenerator(IIterator):
+    # New in Python 3.5
+    abc = _new_in_ver('Generator', True, (IIterator.getABC(),))
+
+
+class ISized(ABCInterface):
+    abc = abc.Sized
+
+
+# ICallable is not defined because there's no standard signature.
+
+class ICollection(ISized,
+                  IIterable,
+                  IContainer):
+    abc = _new_in_ver('Collection', True,
+                      (ISized.getABC(), IIterable.getABC(), IContainer.getABC()))
+
+
+class ISequence(IReversible,
+                ICollection):
+    abc = abc.Sequence
+    extra_classes = (UserString,)
+    # On Python 2, basestring is registered as an ISequence, and
+    # its subclass str is an IByteString. If we also register str as
+    # an ISequence, that tends to lead to inconsistent resolution order.
+    ignored_classes = (basestring,) if str is bytes else () # pylint:disable=undefined-variable
+
+    @optional
+    def __reversed__():
+        """
+        Optional method. If this isn't present, the interpreter
+        will use ``__len__`` and ``__getitem__`` to implement the
+        `reversed` builtin.
+        """
+
+    @optional
+    def __iter__():
+        """
+        Optional method. If not provided, the interpreter will
+        implement `iter` using the old ``__getitem__`` protocol.
+        """
+
+class IMutableSequence(ISequence):
+    abc = abc.MutableSequence
+    extra_classes = (UserList,)
+
+
+class IByteString(ISequence):
+    """
+    This unifies `bytes` and `bytearray`.
+    """
+    abc = _new_in_ver('ByteString', True,
+                      (ISequence.getABC(),),
+                      (bytes, bytearray))
+
+
+class ISet(ICollection):
+    abc = abc.Set
+
+
+class IMutableSet(ISet):
+    abc = abc.MutableSet
+
+
+class IMapping(ICollection):
+    abc = abc.Mapping
+    extra_classes = (dict,)
+    # OrderedDict is a subclass of dict. On CPython 2,
+    # it winds up registered as a IMutableMapping, which
+    # produces an inconsistent IRO if we also try to register it
+    # here.
+    ignored_classes = (OrderedDict,)
+
+
+class IMutableMapping(IMapping):
+    abc = abc.MutableMapping
+    extra_classes = (dict, UserDict,)
+    ignored_classes = (OrderedDict,)
+
+class IMappingView(ISized):
+    abc = abc.MappingView
+
+
+class IItemsView(IMappingView, ISet):
+    abc = abc.ItemsView
+
+
+class IKeysView(IMappingView, ISet):
+    abc = abc.KeysView
+
+
+class IValuesView(IMappingView, ICollection):
+    abc = abc.ValuesView
+
+    @optional
+    def __contains__(other):
+        """
+        Optional method. If not provided, the interpreter will use
+        ``__iter__`` or the old ``__len__`` and ``__getitem__`` protocol
+        to implement ``in``.
+        """
+
+class IAwaitable(ABCInterface):
+    abc = _new_in_ver('Awaitable', True)
+
+
+class ICoroutine(IAwaitable):
+    abc = _new_in_ver('Coroutine', True)
+
+
+class IAsyncIterable(ABCInterface):
+    abc = _new_in_ver('AsyncIterable', True)
+
+
+class IAsyncIterator(IAsyncIterable):
+    abc = _new_in_ver('AsyncIterator', True)
+
+
+class IAsyncGenerator(IAsyncIterator):
+    abc = _new_in_ver('AsyncGenerator', True)

venv/lib/python3.11/site-packages/zope/interface/common/idatetime.py

@@ -0,0 +1,606 @@
+##############################################################################
+# Copyright (c) 2002 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+##############################################################################
+"""Datetime interfaces.
+
+This module is called idatetime because if it were called datetime the import
+of the real datetime would fail.
+"""
+from datetime import timedelta, date, datetime, time, tzinfo
+
+from zope.interface import Interface, Attribute
+from zope.interface import classImplements
+
+
+class ITimeDeltaClass(Interface):
+    """This is the timedelta class interface.
+
+    This is symbolic; this module does **not** make
+    `datetime.timedelta` provide this interface.
+    """
+
+    min = Attribute("The most negative timedelta object")
+
+    max = Attribute("The most positive timedelta object")
+
+    resolution = Attribute(
+        "The smallest difference between non-equal timedelta objects")
+
+
+class ITimeDelta(ITimeDeltaClass):
+    """Represent the difference between two datetime objects.
+
+    Implemented by `datetime.timedelta`.
+
+    Supported operators:
+
+    - add, subtract timedelta
+    - unary plus, minus, abs
+    - compare to timedelta
+    - multiply, divide by int/long
+
+    In addition, `.datetime` supports subtraction of two `.datetime` objects
+    returning a `.timedelta`, and addition or subtraction of a `.datetime`
+    and a `.timedelta` giving a `.datetime`.
+
+    Representation: (days, seconds, microseconds).
+    """
+
+    days = Attribute("Days between -999999999 and 999999999 inclusive")
+
+    seconds = Attribute("Seconds between 0 and 86399 inclusive")
+
+    microseconds = Attribute("Microseconds between 0 and 999999 inclusive")
+
+
+class IDateClass(Interface):
+    """This is the date class interface.
+
+    This is symbolic; this module does **not** make
+    `datetime.date` provide this interface.
+    """
+
+    min = Attribute("The earliest representable date")
+
+    max = Attribute("The latest representable date")
+
+    resolution = Attribute(
+        "The smallest difference between non-equal date objects")
+
+    def today():
+        """Return the current local time.
+
+        This is equivalent to ``date.fromtimestamp(time.time())``"""
+
+    def fromtimestamp(timestamp):
+        """Return the local date from a POSIX timestamp (like time.time())
+
+        This may raise `ValueError`, if the timestamp is out of the range of
+        values supported by the platform C ``localtime()`` function. It's common
+        for this to be restricted to years from 1970 through 2038. Note that
+        on non-POSIX systems that include leap seconds in their notion of a
+        timestamp, leap seconds are ignored by `fromtimestamp`.
+        """
+
+    def fromordinal(ordinal):
+        """Return the date corresponding to the proleptic Gregorian ordinal.
+
+         January 1 of year 1 has ordinal 1. `ValueError` is raised unless
+         1 <= ordinal <= date.max.toordinal().
+
+         For any date *d*, ``date.fromordinal(d.toordinal()) == d``.
+         """
+
+
+class IDate(IDateClass):
+    """Represents a date (year, month and day) in an idealized calendar.
+
+    Implemented by `datetime.date`.
+
+    Operators:
+
+    __repr__, __str__
+    __cmp__, __hash__
+    __add__, __radd__, __sub__ (add/radd only with timedelta arg)
+    """
+
+    year = Attribute("Between MINYEAR and MAXYEAR inclusive.")
+
+    month = Attribute("Between 1 and 12 inclusive")
+
+    day = Attribute(
+        "Between 1 and the number of days in the given month of the given year.")
+
+    def replace(year, month, day):
+        """Return a date with the same value.
+
+        Except for those members given new values by whichever keyword
+        arguments are specified. For example, if ``d == date(2002, 12, 31)``, then
+        ``d.replace(day=26) == date(2000, 12, 26)``.
+        """
+
+    def timetuple():
+        """Return a 9-element tuple of the form returned by `time.localtime`.
+
+        The hours, minutes and seconds are 0, and the DST flag is -1.
+        ``d.timetuple()`` is equivalent to
+        ``(d.year, d.month, d.day, 0, 0, 0, d.weekday(), d.toordinal() -
+        date(d.year, 1, 1).toordinal() + 1, -1)``
+        """
+
+    def toordinal():
+        """Return the proleptic Gregorian ordinal of the date
+
+        January 1 of year 1 has ordinal 1. For any date object *d*,
+        ``date.fromordinal(d.toordinal()) == d``.
+        """
+
+    def weekday():
+        """Return the day of the week as an integer.
+
+        Monday is 0 and Sunday is 6. For example,
+        ``date(2002, 12, 4).weekday() == 2``, a Wednesday.
+
+        .. seealso:: `isoweekday`.
+        """
+
+    def isoweekday():
+        """Return the day of the week as an integer.
+
+        Monday is 1 and Sunday is 7. For example,
+        date(2002, 12, 4).isoweekday() == 3, a Wednesday.
+
+        .. seealso:: `weekday`, `isocalendar`.
+        """
+
+    def isocalendar():
+        """Return a 3-tuple, (ISO year, ISO week number, ISO weekday).
+
+        The ISO calendar is a widely used variant of the Gregorian calendar.
+        See http://www.phys.uu.nl/~vgent/calendar/isocalendar.htm for a good
+        explanation.
+
+        The ISO year consists of 52 or 53 full weeks, and where a week starts
+        on a Monday and ends on a Sunday. The first week of an ISO year is the
+        first (Gregorian) calendar week of a year containing a Thursday. This
+        is called week number 1, and the ISO year of that Thursday is the same
+        as its Gregorian year.
+
+        For example, 2004 begins on a Thursday, so the first week of ISO year
+        2004 begins on Monday, 29 Dec 2003 and ends on Sunday, 4 Jan 2004, so
+        that ``date(2003, 12, 29).isocalendar() == (2004, 1, 1)`` and
+        ``date(2004, 1, 4).isocalendar() == (2004, 1, 7)``.
+        """
+
+    def isoformat():
+        """Return a string representing the date in ISO 8601 format.
+
+        This is 'YYYY-MM-DD'.
+        For example, ``date(2002, 12, 4).isoformat() == '2002-12-04'``.
+        """
+
+    def __str__():
+        """For a date *d*, ``str(d)`` is equivalent to ``d.isoformat()``."""
+
+    def ctime():
+        """Return a string representing the date.
+
+        For example date(2002, 12, 4).ctime() == 'Wed Dec 4 00:00:00 2002'.
+        d.ctime() is equivalent to time.ctime(time.mktime(d.timetuple()))
+        on platforms where the native C ctime() function
+        (which `time.ctime` invokes, but which date.ctime() does not invoke)
+        conforms to the C standard.
+        """
+
+    def strftime(format):
+        """Return a string representing the date.
+
+        Controlled by an explicit format string. Format codes referring to
+        hours, minutes or seconds will see 0 values.
+        """
+
+
+class IDateTimeClass(Interface):
+    """This is the datetime class interface.
+
+    This is symbolic; this module does **not** make
+    `datetime.datetime` provide this interface.
+    """
+
+    min = Attribute("The earliest representable datetime")
+
+    max = Attribute("The latest representable datetime")
+
+    resolution = Attribute(
+        "The smallest possible difference between non-equal datetime objects")
+
+    def today():
+        """Return the current local datetime, with tzinfo None.
+
+        This is equivalent to ``datetime.fromtimestamp(time.time())``.
+
+        .. seealso:: `now`, `fromtimestamp`.
+        """
+
+    def now(tz=None):
+        """Return the current local date and time.
+
+        If optional argument *tz* is None or not specified, this is like `today`,
+        but, if possible, supplies more precision than can be gotten from going
+        through a `time.time` timestamp (for example, this may be possible on
+        platforms supplying the C ``gettimeofday()`` function).
+
+        Else tz must be an instance of a class tzinfo subclass, and the current
+        date and time are converted to tz's time zone. In this case the result
+        is equivalent to tz.fromutc(datetime.utcnow().replace(tzinfo=tz)).
+
+        .. seealso:: `today`, `utcnow`.
+        """
+
+    def utcnow():
+        """Return the current UTC date and time, with tzinfo None.
+
+        This is like `now`, but returns the current UTC date and time, as a
+        naive datetime object.
+
+        .. seealso:: `now`.
+        """
+
+    def fromtimestamp(timestamp, tz=None):
+        """Return the local date and time corresponding to the POSIX timestamp.
+
+        Same as is returned by time.time(). If optional argument tz is None or
+        not specified, the timestamp is converted to the platform's local date
+        and time, and the returned datetime object is naive.
+
+        Else tz must be an instance of a class tzinfo subclass, and the
+        timestamp is converted to tz's time zone. In this case the result is
+        equivalent to
+        ``tz.fromutc(datetime.utcfromtimestamp(timestamp).replace(tzinfo=tz))``.
+
+        fromtimestamp() may raise `ValueError`, if the timestamp is out of the
+        range of values supported by the platform C localtime() or gmtime()
+        functions. It's common for this to be restricted to years in 1970
+        through 2038. Note that on non-POSIX systems that include leap seconds
+        in their notion of a timestamp, leap seconds are ignored by
+        fromtimestamp(), and then it's possible to have two timestamps
+        differing by a second that yield identical datetime objects.
+
+        .. seealso:: `utcfromtimestamp`.
+        """
+
+    def utcfromtimestamp(timestamp):
+        """Return the UTC datetime from the POSIX timestamp with tzinfo None.
+
+        This may raise `ValueError`, if the timestamp is out of the range of
+        values supported by the platform C ``gmtime()`` function. It's common for
+        this to be restricted to years in 1970 through 2038.
+
+        .. seealso:: `fromtimestamp`.
+        """
+
+    def fromordinal(ordinal):
+        """Return the datetime from the proleptic Gregorian ordinal.
+
+        January 1 of year 1 has ordinal 1. `ValueError` is raised unless
+        1 <= ordinal <= datetime.max.toordinal().
+        The hour, minute, second and microsecond of the result are all 0, and
+        tzinfo is None.
+        """
+
+    def combine(date, time):
+        """Return a new datetime object.
+
+        Its date members are equal to the given date object's, and whose time
+        and tzinfo members are equal to the given time object's. For any
+        datetime object *d*, ``d == datetime.combine(d.date(), d.timetz())``.
+        If date is a datetime object, its time and tzinfo members are ignored.
+        """
+
+
+class IDateTime(IDate, IDateTimeClass):
+    """Object contains all the information from a date object and a time object.
+
+    Implemented by `datetime.datetime`.
+    """
+
+    year = Attribute("Year between MINYEAR and MAXYEAR inclusive")
+
+    month = Attribute("Month between 1 and 12 inclusive")
+
+    day = Attribute(
+        "Day between 1 and the number of days in the given month of the year")
+
+    hour = Attribute("Hour in range(24)")
+
+    minute = Attribute("Minute in range(60)")
+
+    second = Attribute("Second in range(60)")
+
+    microsecond = Attribute("Microsecond in range(1000000)")
+
+    tzinfo = Attribute(
+        """The object passed as the tzinfo argument to the datetime constructor
+        or None if none was passed""")
+
+    def date():
+         """Return date object with same year, month and day."""
+
+    def time():
+        """Return time object with same hour, minute, second, microsecond.
+
+        tzinfo is None.
+
+        .. seealso:: Method :meth:`timetz`.
+        """
+
+    def timetz():
+        """Return time object with same hour, minute, second, microsecond,
+        and tzinfo.
+
+        .. seealso:: Method :meth:`time`.
+        """
+
+    def replace(year, month, day, hour, minute, second, microsecond, tzinfo):
+        """Return a datetime with the same members, except for those members
+        given new values by whichever keyword arguments are specified.
+
+        Note that ``tzinfo=None`` can be specified to create a naive datetime from
+        an aware datetime with no conversion of date and time members.
+        """
+
+    def astimezone(tz):
+        """Return a datetime object with new tzinfo member tz, adjusting the
+        date and time members so the result is the same UTC time as self, but
+        in tz's local time.
+
+        tz must be an instance of a tzinfo subclass, and its utcoffset() and
+        dst() methods must not return None. self must be aware (self.tzinfo
+        must not be None, and self.utcoffset() must not return None).
+
+        If self.tzinfo is tz, self.astimezone(tz) is equal to self: no
+        adjustment of date or time members is performed. Else the result is
+        local time in time zone tz, representing the same UTC time as self:
+
+            after astz = dt.astimezone(tz), astz - astz.utcoffset()
+
+        will usually have the same date and time members as dt - dt.utcoffset().
+        The discussion of class `datetime.tzinfo` explains the cases at Daylight Saving
+        Time transition boundaries where this cannot be achieved (an issue only
+        if tz models both standard and daylight time).
+
+        If you merely want to attach a time zone object *tz* to a datetime *dt*
+        without adjustment of date and time members, use ``dt.replace(tzinfo=tz)``.
+        If you merely want to remove the time zone object from an aware
+        datetime dt without conversion of date and time members, use
+        ``dt.replace(tzinfo=None)``.
+
+        Note that the default `tzinfo.fromutc` method can be overridden in a
+        tzinfo subclass to effect the result returned by `astimezone`.
+        """
+
+    def utcoffset():
+        """Return the timezone offset in minutes east of UTC (negative west of
+        UTC)."""
+
+    def dst():
+        """Return 0 if DST is not in effect, or the DST offset (in minutes
+        eastward) if DST is in effect.
+        """
+
+    def tzname():
+        """Return the timezone name."""
+
+    def timetuple():
+        """Return a 9-element tuple of the form returned by `time.localtime`."""
+
+    def utctimetuple():
+        """Return UTC time tuple compatilble with `time.gmtime`."""
+
+    def toordinal():
+        """Return the proleptic Gregorian ordinal of the date.
+
+        The same as self.date().toordinal().
+        """
+
+    def weekday():
+        """Return the day of the week as an integer.
+
+        Monday is 0 and Sunday is 6. The same as self.date().weekday().
+        See also isoweekday().
+        """
+
+    def isoweekday():
+        """Return the day of the week as an integer.
+
+        Monday is 1 and Sunday is 7. The same as self.date().isoweekday.
+
+        .. seealso:: `weekday`, `isocalendar`.
+        """
+
+    def isocalendar():
+        """Return a 3-tuple, (ISO year, ISO week number, ISO weekday).
+
+        The same as self.date().isocalendar().
+        """
+
+    def isoformat(sep='T'):
+        """Return a string representing the date and time in ISO 8601 format.
+
+        YYYY-MM-DDTHH:MM:SS.mmmmmm or YYYY-MM-DDTHH:MM:SS if microsecond is 0
+
+        If `utcoffset` does not return None, a 6-character string is appended,
+        giving the UTC offset in (signed) hours and minutes:
+
+        YYYY-MM-DDTHH:MM:SS.mmmmmm+HH:MM or YYYY-MM-DDTHH:MM:SS+HH:MM
+        if microsecond is 0.
+
+        The optional argument sep (default 'T') is a one-character separator,
+        placed between the date and time portions of the result.
+        """
+
+    def __str__():
+        """For a datetime instance *d*, ``str(d)`` is equivalent to ``d.isoformat(' ')``.
+        """
+
+    def ctime():
+        """Return a string representing the date and time.
+
+        ``datetime(2002, 12, 4, 20, 30, 40).ctime() == 'Wed Dec 4 20:30:40 2002'``.
+        ``d.ctime()`` is equivalent to ``time.ctime(time.mktime(d.timetuple()))`` on
+        platforms where the native C ``ctime()`` function (which `time.ctime`
+        invokes, but which `datetime.ctime` does not invoke) conforms to the
+        C standard.
+        """
+
+    def strftime(format):
+        """Return a string representing the date and time.
+
+        This is controlled by an explicit format string.
+        """
+
+
+class ITimeClass(Interface):
+    """This is the time class interface.
+
+    This is symbolic; this module does **not** make
+    `datetime.time` provide this interface.
+
+    """
+
+    min = Attribute("The earliest representable time")
+
+    max = Attribute("The latest representable time")
+
+    resolution = Attribute(
+        "The smallest possible difference between non-equal time objects")
+
+
+class ITime(ITimeClass):
+    """Represent time with time zone.
+
+    Implemented by `datetime.time`.
+
+    Operators:
+
+    __repr__, __str__
+    __cmp__, __hash__
+    """
+
+    hour = Attribute("Hour in range(24)")
+
+    minute = Attribute("Minute in range(60)")
+
+    second = Attribute("Second in range(60)")
+
+    microsecond = Attribute("Microsecond in range(1000000)")
+
+    tzinfo = Attribute(
+        """The object passed as the tzinfo argument to the time constructor
+        or None if none was passed.""")
+
+    def replace(hour, minute, second, microsecond, tzinfo):
+        """Return a time with the same value.
+
+        Except for those members given new values by whichever keyword
+        arguments are specified. Note that tzinfo=None can be specified
+        to create a naive time from an aware time, without conversion of the
+        time members.
+        """
+
+    def isoformat():
+        """Return a string representing the time in ISO 8601 format.
+
+        That is HH:MM:SS.mmmmmm or, if self.microsecond is 0, HH:MM:SS
+        If utcoffset() does not return None, a 6-character string is appended,
+        giving the UTC offset in (signed) hours and minutes:
+        HH:MM:SS.mmmmmm+HH:MM or, if self.microsecond is 0, HH:MM:SS+HH:MM
+        """
+
+    def __str__():
+        """For a time t, str(t) is equivalent to t.isoformat()."""
+
+    def strftime(format):
+        """Return a string representing the time.
+
+        This is controlled by an explicit format string.
+        """
+
+    def utcoffset():
+        """Return the timezone offset in minutes east of UTC (negative west of
+        UTC).
+
+        If tzinfo is None, returns None, else returns
+        self.tzinfo.utcoffset(None), and raises an exception if the latter
+        doesn't return None or a timedelta object representing a whole number
+        of minutes with magnitude less than one day.
+        """
+
+    def dst():
+        """Return 0 if DST is not in effect, or the DST offset (in minutes
+        eastward) if DST is in effect.
+
+        If tzinfo is None, returns None, else returns self.tzinfo.dst(None),
+        and raises an exception if the latter doesn't return None, or a
+        timedelta object representing a whole number of minutes with
+        magnitude less than one day.
+        """
+
+    def tzname():
+        """Return the timezone name.
+
+        If tzinfo is None, returns None, else returns self.tzinfo.tzname(None),
+        or raises an exception if the latter doesn't return None or a string
+        object.
+        """
+
+
+class ITZInfo(Interface):
+    """Time zone info class.
+    """
+
+    def utcoffset(dt):
+        """Return offset of local time from UTC, in minutes east of UTC.
+
+        If local time is west of UTC, this should be negative.
+        Note that this is intended to be the total offset from UTC;
+        for example, if a tzinfo object represents both time zone and DST
+        adjustments, utcoffset() should return their sum. If the UTC offset
+        isn't known, return None. Else the value returned must be a timedelta
+        object specifying a whole number of minutes in the range -1439 to 1439
+        inclusive (1440 = 24*60; the magnitude of the offset must be less
+        than one day).
+        """
+
+    def dst(dt):
+        """Return the daylight saving time (DST) adjustment, in minutes east
+        of UTC, or None if DST information isn't known.
+        """
+
+    def tzname(dt):
+        """Return the time zone name corresponding to the datetime object as
+        a string.
+        """
+
+    def fromutc(dt):
+        """Return an equivalent datetime in self's local time."""
+
+
+classImplements(timedelta, ITimeDelta)
+classImplements(date, IDate)
+classImplements(datetime, IDateTime)
+classImplements(time, ITime)
+classImplements(tzinfo, ITZInfo)
+
+## directlyProvides(timedelta, ITimeDeltaClass)
+## directlyProvides(date, IDateClass)
+## directlyProvides(datetime, IDateTimeClass)
+## directlyProvides(time, ITimeClass)

venv/lib/python3.11/site-packages/zope/interface/common/interfaces.py

@@ -0,0 +1,208 @@
+##############################################################################
+#
+# Copyright (c) 2003 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Interfaces for standard python exceptions
+"""
+from zope.interface import Interface
+from zope.interface import classImplements
+
+class IException(Interface):
+    "Interface for `Exception`"
+classImplements(Exception, IException)
+
+
+class IStandardError(IException):
+    "Interface for `StandardError` (no longer existing.)"
+
+
+class IWarning(IException):
+    "Interface for `Warning`"
+classImplements(Warning, IWarning)
+
+
+class ISyntaxError(IStandardError):
+    "Interface for `SyntaxError`"
+classImplements(SyntaxError, ISyntaxError)
+
+
+class ILookupError(IStandardError):
+    "Interface for `LookupError`"
+classImplements(LookupError, ILookupError)
+
+
+class IValueError(IStandardError):
+    "Interface for `ValueError`"
+classImplements(ValueError, IValueError)
+
+
+class IRuntimeError(IStandardError):
+    "Interface for `RuntimeError`"
+classImplements(RuntimeError, IRuntimeError)
+
+
+class IArithmeticError(IStandardError):
+    "Interface for `ArithmeticError`"
+classImplements(ArithmeticError, IArithmeticError)
+
+
+class IAssertionError(IStandardError):
+    "Interface for `AssertionError`"
+classImplements(AssertionError, IAssertionError)
+
+
+class IAttributeError(IStandardError):
+    "Interface for `AttributeError`"
+classImplements(AttributeError, IAttributeError)
+
+
+class IDeprecationWarning(IWarning):
+    "Interface for `DeprecationWarning`"
+classImplements(DeprecationWarning, IDeprecationWarning)
+
+
+class IEOFError(IStandardError):
+    "Interface for `EOFError`"
+classImplements(EOFError, IEOFError)
+
+
+class IEnvironmentError(IStandardError):
+    "Interface for `EnvironmentError`"
+classImplements(EnvironmentError, IEnvironmentError)
+
+
+class IFloatingPointError(IArithmeticError):
+    "Interface for `FloatingPointError`"
+classImplements(FloatingPointError, IFloatingPointError)
+
+
+class IIOError(IEnvironmentError):
+    "Interface for `IOError`"
+classImplements(IOError, IIOError)
+
+
+class IImportError(IStandardError):
+    "Interface for `ImportError`"
+classImplements(ImportError, IImportError)
+
+
+class IIndentationError(ISyntaxError):
+    "Interface for `IndentationError`"
+classImplements(IndentationError, IIndentationError)
+
+
+class IIndexError(ILookupError):
+    "Interface for `IndexError`"
+classImplements(IndexError, IIndexError)
+
+
+class IKeyError(ILookupError):
+    "Interface for `KeyError`"
+classImplements(KeyError, IKeyError)
+
+
+class IKeyboardInterrupt(IStandardError):
+    "Interface for `KeyboardInterrupt`"
+classImplements(KeyboardInterrupt, IKeyboardInterrupt)
+
+
+class IMemoryError(IStandardError):
+    "Interface for `MemoryError`"
+classImplements(MemoryError, IMemoryError)
+
+
+class INameError(IStandardError):
+    "Interface for `NameError`"
+classImplements(NameError, INameError)
+
+
+class INotImplementedError(IRuntimeError):
+    "Interface for `NotImplementedError`"
+classImplements(NotImplementedError, INotImplementedError)
+
+
+class IOSError(IEnvironmentError):
+    "Interface for `OSError`"
+classImplements(OSError, IOSError)
+
+
+class IOverflowError(IArithmeticError):
+    "Interface for `ArithmeticError`"
+classImplements(OverflowError, IOverflowError)
+
+
+class IOverflowWarning(IWarning):
+    """Deprecated, no standard class implements this.
+
+    This was the interface for ``OverflowWarning`` prior to Python 2.5,
+    but that class was removed for all versions after that.
+    """
+
+
+class IReferenceError(IStandardError):
+    "Interface for `ReferenceError`"
+classImplements(ReferenceError, IReferenceError)
+
+
+class IRuntimeWarning(IWarning):
+    "Interface for `RuntimeWarning`"
+classImplements(RuntimeWarning, IRuntimeWarning)
+
+
+class IStopIteration(IException):
+    "Interface for `StopIteration`"
+classImplements(StopIteration, IStopIteration)
+
+
+class ISyntaxWarning(IWarning):
+    "Interface for `SyntaxWarning`"
+classImplements(SyntaxWarning, ISyntaxWarning)
+
+
+class ISystemError(IStandardError):
+    "Interface for `SystemError`"
+classImplements(SystemError, ISystemError)
+
+
+class ISystemExit(IException):
+    "Interface for `SystemExit`"
+classImplements(SystemExit, ISystemExit)
+
+
+class ITabError(IIndentationError):
+    "Interface for `TabError`"
+classImplements(TabError, ITabError)
+
+
+class ITypeError(IStandardError):
+    "Interface for `TypeError`"
+classImplements(TypeError, ITypeError)
+
+
+class IUnboundLocalError(INameError):
+    "Interface for `UnboundLocalError`"
+classImplements(UnboundLocalError, IUnboundLocalError)
+
+
+class IUnicodeError(IValueError):
+    "Interface for `UnicodeError`"
+classImplements(UnicodeError, IUnicodeError)
+
+
+class IUserWarning(IWarning):
+    "Interface for `UserWarning`"
+classImplements(UserWarning, IUserWarning)
+
+
+class IZeroDivisionError(IArithmeticError):
+    "Interface for `ZeroDivisionError`"
+classImplements(ZeroDivisionError, IZeroDivisionError)

venv/lib/python3.11/site-packages/zope/interface/common/io.py

@@ -0,0 +1,43 @@
+##############################################################################
+# Copyright (c) 2020 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+##############################################################################
+"""
+Interface definitions paralleling the abstract base classes defined in
+:mod:`io`.
+
+After this module is imported, the standard library types will declare
+that they implement the appropriate interface.
+
+.. versionadded:: 5.0.0
+"""
+
+import io as abc
+
+from zope.interface.common import ABCInterface
+
+# pylint:disable=inherit-non-class,
+# pylint:disable=no-member
+
+class IIOBase(ABCInterface):
+    abc = abc.IOBase
+
+
+class IRawIOBase(IIOBase):
+    abc = abc.RawIOBase
+
+
+class IBufferedIOBase(IIOBase):
+    abc = abc.BufferedIOBase
+    extra_classes = ()
+
+
+class ITextIOBase(IIOBase):
+    abc = abc.TextIOBase

venv/lib/python3.11/site-packages/zope/interface/common/mapping.py

@@ -0,0 +1,168 @@
+##############################################################################
+#
+# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""
+Mapping Interfaces.
+
+Importing this module does *not* mark any standard classes as
+implementing any of these interfaces.
+
+While this module is not deprecated, new code should generally use
+:mod:`zope.interface.common.collections`, specifically
+:class:`~zope.interface.common.collections.IMapping` and
+:class:`~zope.interface.common.collections.IMutableMapping`. This
+module is occasionally useful for its extremely fine grained breakdown
+of interfaces.
+
+The standard library :class:`dict` and :class:`collections.UserDict`
+implement ``IMutableMapping``, but *do not* implement any of the
+interfaces in this module.
+"""
+from zope.interface import Interface
+from zope.interface.common import collections
+
+class IItemMapping(Interface):
+    """Simplest readable mapping object
+    """
+
+    def __getitem__(key):
+        """Get a value for a key
+
+        A `KeyError` is raised if there is no value for the key.
+        """
+
+
+class IReadMapping(collections.IContainer, IItemMapping):
+    """
+    Basic mapping interface.
+
+    .. versionchanged:: 5.0.0
+       Extend ``IContainer``
+    """
+
+    def get(key, default=None):
+        """Get a value for a key
+
+        The default is returned if there is no value for the key.
+        """
+
+    def __contains__(key):
+        """Tell if a key exists in the mapping."""
+        # Optional in IContainer, required by this interface.
+
+
+class IWriteMapping(Interface):
+    """Mapping methods for changing data"""
+
+    def __delitem__(key):
+        """Delete a value from the mapping using the key."""
+
+    def __setitem__(key, value):
+        """Set a new item in the mapping."""
+
+
+class IEnumerableMapping(collections.ISized, IReadMapping):
+    """
+    Mapping objects whose items can be enumerated.
+
+    .. versionchanged:: 5.0.0
+       Extend ``ISized``
+    """
+
+    def keys():
+        """Return the keys of the mapping object.
+        """
+
+    def __iter__():
+        """Return an iterator for the keys of the mapping object.
+        """
+
+    def values():
+        """Return the values of the mapping object.
+        """
+
+    def items():
+        """Return the items of the mapping object.
+        """
+
+class IMapping(IWriteMapping, IEnumerableMapping):
+    ''' Simple mapping interface '''
+
+class IIterableMapping(IEnumerableMapping):
+    """A mapping that has distinct methods for iterating
+    without copying.
+
+    """
+
+
+class IClonableMapping(Interface):
+    """Something that can produce a copy of itself.
+
+    This is available in `dict`.
+    """
+
+    def copy():
+        "return copy of dict"
+
+class IExtendedReadMapping(IIterableMapping):
+    """
+    Something with a particular method equivalent to ``__contains__``.
+
+    On Python 2, `dict` provided the ``has_key`` method, but it was removed
+    in Python 3.
+    """
+
+
+class IExtendedWriteMapping(IWriteMapping):
+    """Additional mutation methods.
+
+    These are all provided by `dict`.
+    """
+
+    def clear():
+        "delete all items"
+
+    def update(d):
+        " Update D from E: for k in E.keys(): D[k] = E[k]"
+
+    def setdefault(key, default=None):
+        "D.setdefault(k[,d]) -> D.get(k,d), also set D[k]=d if k not in D"
+
+    def pop(k, default=None):
+        """
+        pop(k[,default]) -> value
+
+        Remove specified key and return the corresponding value.
+
+        If key is not found, *default* is returned if given, otherwise
+        `KeyError` is raised. Note that *default* must not be passed by
+        name.
+        """
+
+    def popitem():
+        """remove and return some (key, value) pair as a
+        2-tuple; but raise KeyError if mapping is empty"""
+
+class IFullMapping(
+        collections.IMutableMapping,
+        IExtendedReadMapping, IExtendedWriteMapping, IClonableMapping, IMapping,):
+    """
+    Full mapping interface.
+
+    Most uses of this interface should instead use
+    :class:`~zope.interface.commons.collections.IMutableMapping` (one of the
+    bases of this interface). The required methods are the same.
+
+    .. versionchanged:: 5.0.0
+       Extend ``IMutableMapping``
+    """

venv/lib/python3.11/site-packages/zope/interface/common/numbers.py

@@ -0,0 +1,65 @@
+##############################################################################
+# Copyright (c) 2020 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+##############################################################################
+"""
+Interface definitions paralleling the abstract base classes defined in
+:mod:`numbers`.
+
+After this module is imported, the standard library types will declare
+that they implement the appropriate interface.
+
+.. versionadded:: 5.0.0
+"""
+
+import numbers as abc
+
+from zope.interface.common import ABCInterface
+from zope.interface.common import optional
+
+
+# pylint:disable=inherit-non-class,
+# pylint:disable=no-self-argument,no-method-argument
+# pylint:disable=unexpected-special-method-signature
+# pylint:disable=no-value-for-parameter
+
+
+class INumber(ABCInterface):
+    abc = abc.Number
+
+
+class IComplex(INumber):
+    abc = abc.Complex
+
+    @optional
+    def __complex__():
+        """
+        Rarely implemented, even in builtin types.
+        """
+
+
+class IReal(IComplex):
+    abc = abc.Real
+
+    @optional
+    def __complex__():
+        """
+        Rarely implemented, even in builtin types.
+        """
+
+    __floor__ = __ceil__ = __complex__
+
+
+class IRational(IReal):
+    abc = abc.Rational
+
+
+class IIntegral(IRational):
+    abc = abc.Integral

venv/lib/python3.11/site-packages/zope/interface/common/sequence.py

@@ -0,0 +1,189 @@
+##############################################################################
+#
+# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""
+Sequence Interfaces
+
+Importing this module does *not* mark any standard classes as
+implementing any of these interfaces.
+
+While this module is not deprecated, new code should generally use
+:mod:`zope.interface.common.collections`, specifically
+:class:`~zope.interface.common.collections.ISequence` and
+:class:`~zope.interface.common.collections.IMutableSequence`. This
+module is occasionally useful for its fine-grained breakdown of interfaces.
+
+The standard library :class:`list`, :class:`tuple` and
+:class:`collections.UserList`, among others, implement ``ISequence``
+or ``IMutableSequence`` but *do not* implement any of the interfaces
+in this module.
+"""
+
+__docformat__ = 'restructuredtext'
+from zope.interface import Interface
+from zope.interface.common import collections
+
+class IMinimalSequence(collections.IIterable):
+    """Most basic sequence interface.
+
+    All sequences are iterable.  This requires at least one of the
+    following:
+
+    - a `__getitem__()` method that takes a single argument; integer
+      values starting at 0 must be supported, and `IndexError` should
+      be raised for the first index for which there is no value, or
+
+    - an `__iter__()` method that returns an iterator as defined in
+      the Python documentation (http://docs.python.org/lib/typeiter.html).
+
+    """
+
+    def __getitem__(index):
+        """``x.__getitem__(index) <==> x[index]``
+
+        Declaring this interface does not specify whether `__getitem__`
+        supports slice objects."""
+
+class IFiniteSequence(collections.ISized, IMinimalSequence):
+    """
+    A sequence of bound size.
+
+    .. versionchanged:: 5.0.0
+       Extend ``ISized``
+    """
+
+class IReadSequence(collections.IContainer, IFiniteSequence):
+    """
+    read interface shared by tuple and list
+
+    This interface is similar to
+    :class:`~zope.interface.common.collections.ISequence`, but
+    requires that all instances be totally ordered. Most users
+    should prefer ``ISequence``.
+
+    .. versionchanged:: 5.0.0
+       Extend ``IContainer``
+    """
+
+    def __contains__(item):
+        """``x.__contains__(item) <==> item in x``"""
+        # Optional in IContainer, required here.
+
+    def __lt__(other):
+        """``x.__lt__(other) <==> x < other``"""
+
+    def __le__(other):
+        """``x.__le__(other) <==> x <= other``"""
+
+    def __eq__(other):
+        """``x.__eq__(other) <==> x == other``"""
+
+    def __ne__(other):
+        """``x.__ne__(other) <==> x != other``"""
+
+    def __gt__(other):
+        """``x.__gt__(other) <==> x > other``"""
+
+    def __ge__(other):
+        """``x.__ge__(other) <==> x >= other``"""
+
+    def __add__(other):
+        """``x.__add__(other) <==> x + other``"""
+
+    def __mul__(n):
+        """``x.__mul__(n) <==> x * n``"""
+
+    def __rmul__(n):
+        """``x.__rmul__(n) <==> n * x``"""
+
+
+class IExtendedReadSequence(IReadSequence):
+    """Full read interface for lists"""
+
+    def count(item):
+        """Return number of occurrences of value"""
+
+    def index(item, *args):
+        """index(value, [start, [stop]]) -> int
+
+        Return first index of *value*
+        """
+
+class IUniqueMemberWriteSequence(Interface):
+    """The write contract for a sequence that may enforce unique members"""
+
+    def __setitem__(index, item):
+        """``x.__setitem__(index, item) <==> x[index] = item``
+
+        Declaring this interface does not specify whether `__setitem__`
+        supports slice objects.
+        """
+
+    def __delitem__(index):
+        """``x.__delitem__(index) <==> del x[index]``
+
+        Declaring this interface does not specify whether `__delitem__`
+        supports slice objects.
+        """
+
+    def __iadd__(y):
+        """``x.__iadd__(y) <==> x += y``"""
+
+    def append(item):
+        """Append item to end"""
+
+    def insert(index, item):
+        """Insert item before index"""
+
+    def pop(index=-1):
+        """Remove and return item at index (default last)"""
+
+    def remove(item):
+        """Remove first occurrence of value"""
+
+    def reverse():
+        """Reverse *IN PLACE*"""
+
+    def sort(cmpfunc=None):
+        """Stable sort *IN PLACE*; `cmpfunc(x, y)` -> -1, 0, 1"""
+
+    def extend(iterable):
+        """Extend list by appending elements from the iterable"""
+
+class IWriteSequence(IUniqueMemberWriteSequence):
+    """Full write contract for sequences"""
+
+    def __imul__(n):
+        """``x.__imul__(n) <==> x *= n``"""
+
+class ISequence(IReadSequence, IWriteSequence):
+    """
+    Full sequence contract.
+
+    New code should prefer
+    :class:`~zope.interface.common.collections.IMutableSequence`.
+
+    Compared to that interface, which is implemented by :class:`list`
+    (:class:`~zope.interface.common.builtins.IList`), among others,
+    this interface is missing the following methods:
+
+        - clear
+
+        - count
+
+        - index
+
+    This interface adds the following methods:
+
+        - sort
+    """

venv/lib/python3.11/site-packages/zope/interface/common/tests/__init__.py

@@ -0,0 +1,136 @@
+##############################################################################
+# Copyright (c) 2020 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+##############################################################################
+
+import unittest
+
+from zope.interface.verify import verifyClass
+from zope.interface.verify import verifyObject
+
+from zope.interface.common import ABCInterface
+from zope.interface.common import ABCInterfaceClass
+
+
+def iter_abc_interfaces(predicate=lambda iface: True):
+    # Iterate ``(iface, classes)``, where ``iface`` is a descendent of
+    # the ABCInterfaceClass passing the *predicate* and ``classes`` is
+    # an iterable of classes registered to conform to that interface.
+    #
+    # Note that some builtin classes are registered for two distinct
+    # parts of the ABC/interface tree. For example, bytearray is both ByteString
+    # and MutableSequence.
+    seen = set()
+    stack = list(ABCInterface.dependents) # subclasses, but also implementedBy objects
+    while stack:
+        iface = stack.pop(0)
+        if iface in seen or not isinstance(iface, ABCInterfaceClass):
+            continue
+        seen.add(iface)
+        stack.extend(list(iface.dependents))
+        if not predicate(iface):
+            continue
+
+        registered = set(iface.getRegisteredConformers())
+        registered -= set(iface._ABCInterfaceClass__ignored_classes)
+        if registered:
+            yield iface, registered
+
+
+def add_abc_interface_tests(cls, module):
+    def predicate(iface):
+        return iface.__module__ == module
+    add_verify_tests(cls, iter_abc_interfaces(predicate))
+
+
+def add_verify_tests(cls, iface_classes_iter):
+    cls.maxDiff = None
+    for iface, registered_classes in iface_classes_iter:
+        for stdlib_class in registered_classes:
+            def test(self, stdlib_class=stdlib_class, iface=iface):
+                if stdlib_class in self.UNVERIFIABLE or stdlib_class.__name__ in self.UNVERIFIABLE:
+                    self.skipTest("Unable to verify %s" % stdlib_class)
+
+                self.assertTrue(self.verify(iface, stdlib_class))
+
+            suffix = "{}_{}_{}_{}".format(
+                stdlib_class.__module__.replace('.', '_'),
+                stdlib_class.__name__,
+                iface.__module__.replace('.', '_'),
+                iface.__name__
+            )
+            name = 'test_auto_' + suffix
+            test.__name__ = name
+            assert not hasattr(cls, name), (name, list(cls.__dict__))
+            setattr(cls, name, test)
+
+            def test_ro(self, stdlib_class=stdlib_class, iface=iface):
+                from zope.interface import ro
+                from zope.interface import implementedBy
+                from zope.interface import Interface
+                self.assertEqual(
+                    tuple(ro.ro(iface, strict=True)),
+                    iface.__sro__)
+                implements = implementedBy(stdlib_class)
+                sro = implements.__sro__
+                self.assertIs(sro[-1], Interface)
+
+                if stdlib_class not in self.UNVERIFIABLE_RO:
+                    # Check that we got the strict C3 resolution order, unless
+                    # we know we cannot. Note that 'Interface' is virtual base
+                    # that doesn't necessarily appear at the same place in the
+                    # calculated SRO as in the final SRO.
+                    strict = stdlib_class not in self.NON_STRICT_RO
+                    isro = ro.ro(implements, strict=strict)
+                    isro.remove(Interface)
+                    isro.append(Interface)
+
+                    self.assertEqual(tuple(isro), sro)
+
+            name = 'test_auto_ro_' + suffix
+            test_ro.__name__ = name
+            assert not hasattr(cls, name)
+            setattr(cls, name, test_ro)
+
+class VerifyClassMixin(unittest.TestCase):
+    verifier = staticmethod(verifyClass)
+    UNVERIFIABLE = ()
+    NON_STRICT_RO = ()
+    UNVERIFIABLE_RO = ()
+
+    def _adjust_object_before_verify(self, iface, x):
+        return x
+
+    def verify(self, iface, klass, **kwargs):
+        return self.verifier(iface,
+                             self._adjust_object_before_verify(iface, klass),
+                             **kwargs)
+
+
+class VerifyObjectMixin(VerifyClassMixin):
+    verifier = staticmethod(verifyObject)
+    CONSTRUCTORS = {
+    }
+
+    def _adjust_object_before_verify(self, iface, x):
+        constructor = self.CONSTRUCTORS.get(x)
+        if not constructor:
+            constructor = self.CONSTRUCTORS.get(iface)
+        if not constructor:
+            constructor = self.CONSTRUCTORS.get(x.__name__)
+        if not constructor:
+            constructor = x
+        if constructor is unittest.SkipTest:
+            self.skipTest("Cannot create " + str(x))
+
+        result = constructor()
+        if hasattr(result, 'close'):
+            self.addCleanup(result.close)
+        return result

venv/lib/python3.11/site-packages/zope/interface/common/tests/basemapping.py

@@ -0,0 +1,107 @@
+##############################################################################
+#
+# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Base Mapping tests
+"""
+from operator import __getitem__
+
+def testIReadMapping(self, inst, state, absent):
+    for key in state:
+        self.assertEqual(inst[key], state[key])
+        self.assertEqual(inst.get(key, None), state[key])
+        self.assertTrue(key in inst)
+
+    for key in absent:
+        self.assertEqual(inst.get(key, None), None)
+        self.assertEqual(inst.get(key), None)
+        self.assertEqual(inst.get(key, self), self)
+        self.assertRaises(KeyError, __getitem__, inst, key)
+
+
+def test_keys(self, inst, state):
+    # Return the keys of the mapping object
+    inst_keys = list(inst.keys()); inst_keys.sort()
+    state_keys = list(state.keys()) ; state_keys.sort()
+    self.assertEqual(inst_keys, state_keys)
+
+def test_iter(self, inst, state):
+    # Return the keys of the mapping object
+    inst_keys = list(inst); inst_keys.sort()
+    state_keys = list(state.keys()) ; state_keys.sort()
+    self.assertEqual(inst_keys, state_keys)
+
+def test_values(self, inst, state):
+    # Return the values of the mapping object
+    inst_values = list(inst.values()); inst_values.sort()
+    state_values = list(state.values()) ; state_values.sort()
+    self.assertEqual(inst_values, state_values)
+
+def test_items(self, inst, state):
+    # Return the items of the mapping object
+    inst_items = list(inst.items()); inst_items.sort()
+    state_items = list(state.items()) ; state_items.sort()
+    self.assertEqual(inst_items, state_items)
+
+def test___len__(self, inst, state):
+    # Return the number of items
+    self.assertEqual(len(inst), len(state))
+
+def testIEnumerableMapping(self, inst, state):
+    test_keys(self, inst, state)
+    test_items(self, inst, state)
+    test_values(self, inst, state)
+    test___len__(self, inst, state)
+
+
+class BaseTestIReadMapping:
+    def testIReadMapping(self):
+        inst = self._IReadMapping__sample()
+        state = self._IReadMapping__stateDict()
+        absent = self._IReadMapping__absentKeys()
+        testIReadMapping(self, inst, state, absent)
+
+
+class BaseTestIEnumerableMapping(BaseTestIReadMapping):
+    # Mapping objects whose items can be enumerated
+    def test_keys(self):
+        # Return the keys of the mapping object
+        inst = self._IEnumerableMapping__sample()
+        state = self._IEnumerableMapping__stateDict()
+        test_keys(self, inst, state)
+
+    def test_values(self):
+        # Return the values of the mapping object
+        inst = self._IEnumerableMapping__sample()
+        state = self._IEnumerableMapping__stateDict()
+        test_values(self, inst, state)
+
+    def test_items(self):
+        # Return the items of the mapping object
+        inst = self._IEnumerableMapping__sample()
+        state = self._IEnumerableMapping__stateDict()
+        test_items(self, inst, state)
+
+    def test___len__(self):
+        # Return the number of items
+        inst = self._IEnumerableMapping__sample()
+        state = self._IEnumerableMapping__stateDict()
+        test___len__(self, inst, state)
+
+    def _IReadMapping__stateDict(self):
+        return self._IEnumerableMapping__stateDict()
+
+    def _IReadMapping__sample(self):
+        return self._IEnumerableMapping__sample()
+
+    def _IReadMapping__absentKeys(self):
+        return self._IEnumerableMapping__absentKeys()

venv/lib/python3.11/site-packages/zope/interface/common/tests/test_builtins.py

@@ -0,0 +1,43 @@
+##############################################################################
+# Copyright (c) 2020 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+##############################################################################
+
+import unittest
+
+from zope.interface.common import builtins
+
+from . import VerifyClassMixin
+from . import VerifyObjectMixin
+from . import add_verify_tests
+
+
+class TestVerifyClass(VerifyClassMixin,
+                      unittest.TestCase):
+    pass
+
+
+add_verify_tests(TestVerifyClass, (
+    (builtins.IList, (list,)),
+    (builtins.ITuple, (tuple,)),
+    (builtins.ITextString, (str,)),
+    (builtins.IByteString, (bytes,)),
+    (builtins.INativeString, (str,)),
+    (builtins.IBool, (bool,)),
+    (builtins.IDict, (dict,)),
+    (builtins.IFile, ()),
+))
+
+
+class TestVerifyObject(VerifyObjectMixin,
+                       TestVerifyClass):
+    CONSTRUCTORS = {
+        builtins.IFile: lambda: open(__file__)
+    }

venv/lib/python3.11/site-packages/zope/interface/common/tests/test_collections.py

@@ -0,0 +1,142 @@
+##############################################################################
+# Copyright (c) 2020 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+##############################################################################
+
+
+import array
+import unittest
+from collections import abc
+from collections import deque
+from collections import OrderedDict
+
+
+from types import MappingProxyType
+
+from zope.interface import Invalid
+
+
+# Note that importing z.i.c.collections does work on import.
+from zope.interface.common import collections
+
+
+from zope.interface._compat import PYPY
+
+
+from . import add_abc_interface_tests
+from . import VerifyClassMixin
+from . import VerifyObjectMixin
+
+class TestVerifyClass(VerifyClassMixin, unittest.TestCase):
+
+    # Here we test some known builtin classes that are defined to implement
+    # various collection interfaces as a quick sanity test.
+    def test_frozenset(self):
+        self.assertIsInstance(frozenset(), abc.Set)
+        self.assertTrue(self.verify(collections.ISet, frozenset))
+
+    def test_list(self):
+        self.assertIsInstance(list(), abc.MutableSequence)
+        self.assertTrue(self.verify(collections.IMutableSequence, list))
+
+    # Here we test some derived classes.
+    def test_UserList(self):
+        self.assertTrue(self.verify(collections.IMutableSequence,
+                                    collections.UserList))
+
+    def test_UserDict(self):
+        self.assertTrue(self.verify(collections.IMutableMapping,
+                                    collections.UserDict))
+
+    def test_UserString(self):
+        self.assertTrue(self.verify(collections.ISequence,
+                                    collections.UserString))
+
+    # Now we go through the registry, which should have several things,
+    # mostly builtins, but if we've imported other libraries already,
+    # it could contain things from outside of there too. We aren't concerned
+    # about third-party code here, just standard library types. We start with a
+    # blacklist of things to exclude, but if that gets out of hand we can figure
+    # out a better whitelisting.
+    UNVERIFIABLE = {
+        # This is declared to be an ISequence, but is missing lots of methods,
+        # including some that aren't part of a language protocol, such as
+        # ``index`` and ``count``.
+        memoryview,
+        # 'pkg_resources._vendor.pyparsing.ParseResults' is registered as a
+        # MutableMapping but is missing methods like ``popitem`` and ``setdefault``.
+        # It's imported due to namespace packages.
+        'ParseResults',
+        # sqlite3.Row claims ISequence but also misses ``index`` and ``count``.
+        # It's imported because...? Coverage imports it, but why do we have it without
+        # coverage?
+        'Row',
+        # In Python 3.10 ``array.array`` appears as ``IMutableSequence`` but it
+        # does not provide a ``clear()`` method and it cannot be instantiated
+        # using ``array.array()``.
+        array.array,
+    }
+
+    if PYPY:
+        UNVERIFIABLE.update({
+            # collections.deque.pop() doesn't support the index= argument to
+            # MutableSequence.pop(). We can't verify this on CPython because we can't
+            # get the signature, but on PyPy we /can/ get the signature, and of course
+            # it doesn't match.
+            deque,
+            # Likewise for index
+            range,
+        })
+    UNVERIFIABLE_RO = {
+        # ``array.array`` fails the ``test_auto_ro_*`` tests with and
+        # without strict RO but only on Windows (AppVeyor) on Python 3.10.0
+        # (in older versions ``array.array`` does not appear as
+        # ``IMutableSequence``).
+        array.array,
+    }
+
+add_abc_interface_tests(TestVerifyClass, collections.ISet.__module__)
+
+
+class TestVerifyObject(VerifyObjectMixin,
+                       TestVerifyClass):
+    CONSTRUCTORS = {
+        collections.IValuesView: {}.values,
+        collections.IItemsView: {}.items,
+        collections.IKeysView: {}.keys,
+        memoryview: lambda: memoryview(b'abc'),
+        range: lambda: range(10),
+        MappingProxyType: lambda: MappingProxyType({}),
+        collections.UserString: lambda: collections.UserString('abc'),
+        type(iter(bytearray())): lambda: iter(bytearray()),
+        type(iter(b'abc')): lambda: iter(b'abc'),
+        'coroutine': unittest.SkipTest,
+        type(iter({}.keys())): lambda: iter({}.keys()),
+        type(iter({}.items())): lambda: iter({}.items()),
+        type(iter({}.values())): lambda: iter({}.values()),
+        type(i for i in range(1)): lambda: (i for i in range(3)),
+        type(iter([])): lambda: iter([]),
+        type(reversed([])): lambda: reversed([]),
+        'longrange_iterator': unittest.SkipTest,
+        'range_iterator': lambda: iter(range(3)),
+        'rangeiterator': lambda: iter(range(3)),
+        type(iter(set())): lambda: iter(set()),
+        type(iter('')): lambda: iter(''),
+        'async_generator': unittest.SkipTest,
+        type(iter(tuple())): lambda: iter(tuple()),
+    }
+
+    UNVERIFIABLE_RO = {
+        # ``array.array`` fails the ``test_auto_ro_*`` tests with and
+        # without strict RO but only on Windows (AppVeyor) on Python 3.10.0
+        # (in older versions ``array.array`` does not appear as
+        # ``IMutableSequence``).
+        array.array,
+    }

venv/lib/python3.11/site-packages/zope/interface/common/tests/test_idatetime.py

@@ -0,0 +1,37 @@
+##############################################################################
+#
+# Copyright (c) 2003 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Test for datetime interfaces
+"""
+
+import unittest
+
+from zope.interface.verify import verifyObject, verifyClass
+from zope.interface.common.idatetime import ITimeDelta, ITimeDeltaClass
+from zope.interface.common.idatetime import IDate, IDateClass
+from zope.interface.common.idatetime import IDateTime, IDateTimeClass
+from zope.interface.common.idatetime import ITime, ITimeClass, ITZInfo
+from datetime import timedelta, date, datetime, time, tzinfo
+
+class TestDateTimeInterfaces(unittest.TestCase):
+
+    def test_interfaces(self):
+        verifyObject(ITimeDelta, timedelta(minutes=20))
+        verifyObject(IDate, date(2000, 1, 2))
+        verifyObject(IDateTime, datetime(2000, 1, 2, 10, 20))
+        verifyObject(ITime, time(20, 30, 15, 1234))
+        verifyObject(ITZInfo, tzinfo())
+        verifyClass(ITimeDeltaClass, timedelta)
+        verifyClass(IDateClass, date)
+        verifyClass(IDateTimeClass, datetime)
+        verifyClass(ITimeClass, time)

venv/lib/python3.11/site-packages/zope/interface/common/tests/test_import_interfaces.py

@@ -0,0 +1,20 @@
+##############################################################################
+#
+# Copyright (c) 2006 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+import unittest
+
+class TestInterfaceImport(unittest.TestCase):
+
+    def test_import(self):
+        import zope.interface.common.interfaces as x
+        self.assertIsNotNone(x)

venv/lib/python3.11/site-packages/zope/interface/common/tests/test_io.py

@@ -0,0 +1,42 @@
+##############################################################################
+# Copyright (c) 2020 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+##############################################################################
+
+
+import unittest
+import io as abc
+
+# Note that importing z.i.c.io does work on import.
+from zope.interface.common import io
+
+from . import add_abc_interface_tests
+from . import VerifyClassMixin
+from . import VerifyObjectMixin
+
+
+class TestVerifyClass(VerifyClassMixin,
+                      unittest.TestCase):
+    pass
+
+add_abc_interface_tests(TestVerifyClass, io.IIOBase.__module__)
+
+
+class TestVerifyObject(VerifyObjectMixin,
+                       TestVerifyClass):
+    CONSTRUCTORS = {
+        abc.BufferedWriter: lambda: abc.BufferedWriter(abc.StringIO()),
+        abc.BufferedReader: lambda: abc.BufferedReader(abc.StringIO()),
+        abc.TextIOWrapper: lambda: abc.TextIOWrapper(abc.BytesIO()),
+        abc.BufferedRandom: lambda: abc.BufferedRandom(abc.BytesIO()),
+        abc.BufferedRWPair: lambda: abc.BufferedRWPair(abc.BytesIO(), abc.BytesIO()),
+        abc.FileIO: lambda: abc.FileIO(__file__),
+        '_WindowsConsoleIO': unittest.SkipTest,
+    }

venv/lib/python3.11/site-packages/zope/interface/common/tests/test_numbers.py

@@ -0,0 +1,41 @@
+##############################################################################
+# Copyright (c) 2020 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+##############################################################################
+
+
+import unittest
+import numbers as abc
+
+# Note that importing z.i.c.numbers does work on import.
+from zope.interface.common import numbers
+
+from . import add_abc_interface_tests
+from . import VerifyClassMixin
+from . import VerifyObjectMixin
+
+
+class TestVerifyClass(VerifyClassMixin,
+                      unittest.TestCase):
+
+    def test_int(self):
+        self.assertIsInstance(int(), abc.Integral)
+        self.assertTrue(self.verify(numbers.IIntegral, int))
+
+    def test_float(self):
+        self.assertIsInstance(float(), abc.Real)
+        self.assertTrue(self.verify(numbers.IReal, float))
+
+add_abc_interface_tests(TestVerifyClass, numbers.INumber.__module__)
+
+
+class TestVerifyObject(VerifyObjectMixin,
+                       TestVerifyClass):
+    pass

venv/lib/python3.11/site-packages/zope/interface/document.py

@@ -0,0 +1,124 @@
+##############################################################################
+#
+# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+""" Pretty-Print an Interface object as structured text (Yum)
+
+This module provides a function, asStructuredText, for rendering an
+interface as structured text.
+"""
+import zope.interface
+
+__all__ = [
+    'asReStructuredText',
+    'asStructuredText',
+]
+
+def asStructuredText(I, munge=0, rst=False):
+    """ Output structured text format.  Note, this will whack any existing
+    'structured' format of the text.
+
+    If `rst=True`, then the output will quote all code as inline literals in
+    accordance with 'reStructuredText' markup principles.
+    """
+
+    if rst:
+        inline_literal = lambda s: "``{}``".format(s)
+    else:
+        inline_literal = lambda s: s
+
+    r = [inline_literal(I.getName())]
+    outp = r.append
+    level = 1
+
+    if I.getDoc():
+        outp(_justify_and_indent(_trim_doc_string(I.getDoc()), level))
+
+    bases = [base
+             for base in I.__bases__
+             if base is not zope.interface.Interface
+             ]
+    if bases:
+        outp(_justify_and_indent("This interface extends:", level, munge))
+        level += 1
+        for b in bases:
+            item = "o %s" % inline_literal(b.getName())
+            outp(_justify_and_indent(_trim_doc_string(item), level, munge))
+        level -= 1
+
+    namesAndDescriptions = sorted(I.namesAndDescriptions())
+
+    outp(_justify_and_indent("Attributes:", level, munge))
+    level += 1
+    for name, desc in namesAndDescriptions:
+        if not hasattr(desc, 'getSignatureString'):   # ugh...
+            item = "{} -- {}".format(inline_literal(desc.getName()),
+                                 desc.getDoc() or 'no documentation')
+            outp(_justify_and_indent(_trim_doc_string(item), level, munge))
+    level -= 1
+
+    outp(_justify_and_indent("Methods:", level, munge))
+    level += 1
+    for name, desc in namesAndDescriptions:
+        if hasattr(desc, 'getSignatureString'):   # ugh...
+            _call = "{}{}".format(desc.getName(), desc.getSignatureString())
+            item = "{} -- {}".format(inline_literal(_call),
+                                 desc.getDoc() or 'no documentation')
+            outp(_justify_and_indent(_trim_doc_string(item), level, munge))
+
+    return "\n\n".join(r) + "\n\n"
+
+
+def asReStructuredText(I, munge=0):
+    """ Output reStructuredText format.  Note, this will whack any existing
+    'structured' format of the text."""
+    return asStructuredText(I, munge=munge, rst=True)
+
+
+def _trim_doc_string(text):
+    """ Trims a doc string to make it format
+    correctly with structured text. """
+
+    lines = text.replace('\r\n', '\n').split('\n')
+    nlines = [lines.pop(0)]
+    if lines:
+        min_indent = min([len(line) - len(line.lstrip())
+                          for line in lines])
+        for line in lines:
+            nlines.append(line[min_indent:])
+
+    return '\n'.join(nlines)
+
+
+def _justify_and_indent(text, level, munge=0, width=72):
+    """ indent and justify text, rejustify (munge) if specified """
+
+    indent = " " * level
+
+    if munge:
+        lines = []
+        line = indent
+        text = text.split()
+
+        for word in text:
+            line = ' '.join([line, word])
+            if len(line) > width:
+                lines.append(line)
+                line = indent
+        else:
+            lines.append(line)
+
+        return '\n'.join(lines)
+
+    else:
+        return indent + \
+            text.strip().replace("\r\n", "\n") .replace("\n", "\n" + indent)

venv/lib/python3.11/site-packages/zope/interface/exceptions.py

@@ -0,0 +1,275 @@
+##############################################################################
+#
+# Copyright (c) 2002 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Interface-specific exceptions
+"""
+
+__all__ = [
+    # Invalid tree
+    'Invalid',
+    'DoesNotImplement',
+    'BrokenImplementation',
+    'BrokenMethodImplementation',
+    'MultipleInvalid',
+    # Other
+    'BadImplements',
+    'InvalidInterface',
+]
+
+class Invalid(Exception):
+    """A specification is violated
+    """
+
+
+class _TargetInvalid(Invalid):
+    # Internal use. Subclass this when you're describing
+    # a particular target object that's invalid according
+    # to a specific interface.
+    #
+    # For backwards compatibility, the *target* and *interface* are
+    # optional, and the signatures are inconsistent in their ordering.
+    #
+    # We deal with the inconsistency in ordering by defining the index
+    # of the two values in ``self.args``. *target* uses a marker object to
+    # distinguish "not given" from "given, but None", because the latter
+    # can be a value that gets passed to validation. For this reason, it must
+    # always be the last argument (we detect absence by the ``IndexError``).
+
+    _IX_INTERFACE = 0
+    _IX_TARGET = 1
+    # The exception to catch when indexing self.args indicating that
+    # an argument was not given. If all arguments are expected,
+    # a subclass should set this to ().
+    _NOT_GIVEN_CATCH = IndexError
+    _NOT_GIVEN = '<Not Given>'
+
+    def _get_arg_or_default(self, ix, default=None):
+        try:
+            return self.args[ix] # pylint:disable=unsubscriptable-object
+        except self._NOT_GIVEN_CATCH:
+            return default
+
+    @property
+    def interface(self):
+        return self._get_arg_or_default(self._IX_INTERFACE)
+
+    @property
+    def target(self):
+        return self._get_arg_or_default(self._IX_TARGET, self._NOT_GIVEN)
+
+    ###
+    # str
+    #
+    # The ``__str__`` of self is implemented by concatenating (%s), in order,
+    # these properties (none of which should have leading or trailing
+    # whitespace):
+    #
+    # - self._str_subject
+    #   Begin the message, including a description of the target.
+    # - self._str_description
+    #   Provide a general description of the type of error, including
+    #   the interface name if possible and relevant.
+    # - self._str_conjunction
+    #   Join the description to the details. Defaults to ": ".
+    # - self._str_details
+    #   Provide details about how this particular instance of the error.
+    # - self._str_trailer
+    #   End the message. Usually just a period.
+    ###
+
+    @property
+    def _str_subject(self):
+        target = self.target
+        if target is self._NOT_GIVEN:
+            return "An object"
+        return "The object {!r}".format(target)
+
+    @property
+    def _str_description(self):
+        return "has failed to implement interface %s" % (
+            self.interface or '<Unknown>'
+        )
+
+    _str_conjunction = ": "
+    _str_details = "<unknown>"
+    _str_trailer = '.'
+
+    def __str__(self):
+        return "{} {}{}{}{}".format(
+            self._str_subject,
+            self._str_description,
+            self._str_conjunction,
+            self._str_details,
+            self._str_trailer
+        )
+
+
+class DoesNotImplement(_TargetInvalid):
+    """
+    DoesNotImplement(interface[, target])
+
+    The *target* (optional) does not implement the *interface*.
+
+    .. versionchanged:: 5.0.0
+       Add the *target* argument and attribute, and change the resulting
+       string value of this object accordingly.
+    """
+
+    _str_details = "Does not declaratively implement the interface"
+
+
+class BrokenImplementation(_TargetInvalid):
+    """
+    BrokenImplementation(interface, name[, target])
+
+    The *target* (optional) is missing the attribute *name*.
+
+    .. versionchanged:: 5.0.0
+       Add the *target* argument and attribute, and change the resulting
+       string value of this object accordingly.
+
+       The *name* can either be a simple string or a ``Attribute`` object.
+    """
+
+    _IX_NAME = _TargetInvalid._IX_INTERFACE + 1
+    _IX_TARGET = _IX_NAME + 1
+
+    @property
+    def name(self):
+        return self.args[1] # pylint:disable=unsubscriptable-object
+
+    @property
+    def _str_details(self):
+        return "The %s attribute was not provided" % (
+            repr(self.name) if isinstance(self.name, str) else self.name
+        )
+
+
+class BrokenMethodImplementation(_TargetInvalid):
+    """
+    BrokenMethodImplementation(method, message[, implementation, interface, target])
+
+    The *target* (optional) has a *method* in *implementation* that violates
+    its contract in a way described by *mess*.
+
+    .. versionchanged:: 5.0.0
+       Add the *interface* and *target* argument and attribute,
+       and change the resulting string value of this object accordingly.
+
+       The *method* can either be a simple string or a ``Method`` object.
+
+    .. versionchanged:: 5.0.0
+       If *implementation* is given, then the *message* will have the
+       string "implementation" replaced with an short but informative
+       representation of *implementation*.
+
+    """
+
+    _IX_IMPL = 2
+    _IX_INTERFACE = _IX_IMPL + 1
+    _IX_TARGET = _IX_INTERFACE + 1
+
+    @property
+    def method(self):
+        return self.args[0] # pylint:disable=unsubscriptable-object
+
+    @property
+    def mess(self):
+        return self.args[1] # pylint:disable=unsubscriptable-object
+
+    @staticmethod
+    def __implementation_str(impl):
+        # It could be a callable or some arbitrary object, we don't
+        # know yet.
+        import inspect # Inspect is a heavy-weight dependency, lots of imports
+        try:
+            sig = inspect.signature
+            formatsig = str
+        except AttributeError:
+            sig = inspect.getargspec
+            f = inspect.formatargspec
+            formatsig = lambda sig: f(*sig) # pylint:disable=deprecated-method
+
+        try:
+            sig = sig(impl)
+        except (ValueError, TypeError):
+            # Unable to introspect. Darn.
+            # This could be a non-callable, or a particular builtin,
+            # or a bound method that doesn't even accept 'self', e.g.,
+            # ``Class.method = lambda: None; Class().method``
+            return repr(impl)
+
+        try:
+            name = impl.__qualname__
+        except AttributeError:
+            name = impl.__name__
+
+        return name + formatsig(sig)
+
+    @property
+    def _str_details(self):
+        impl = self._get_arg_or_default(self._IX_IMPL, self._NOT_GIVEN)
+        message = self.mess
+        if impl is not self._NOT_GIVEN and 'implementation' in message:
+            message = message.replace("implementation", '%r')
+            message = message % (self.__implementation_str(impl),)
+
+        return 'The contract of {} is violated because {}'.format(
+            repr(self.method) if isinstance(self.method, str) else self.method,
+            message,
+        )
+
+
+class MultipleInvalid(_TargetInvalid):
+    """
+    The *target* has failed to implement the *interface* in
+    multiple ways.
+
+    The failures are described by *exceptions*, a collection of
+    other `Invalid` instances.
+
+    .. versionadded:: 5.0
+    """
+
+    _NOT_GIVEN_CATCH = ()
+
+    def __init__(self, interface, target, exceptions):
+        super().__init__(interface, target, tuple(exceptions))
+
+    @property
+    def exceptions(self):
+        return self.args[2] # pylint:disable=unsubscriptable-object
+
+    @property
+    def _str_details(self):
+        # It would be nice to use tabs here, but that
+        # is hard to represent in doctests.
+        return '\n    ' + '\n    '.join(
+            x._str_details.strip() if isinstance(x, _TargetInvalid) else str(x)
+            for x in self.exceptions
+        )
+
+    _str_conjunction = ':' # We don't want a trailing space, messes up doctests
+    _str_trailer = ''
+
+
+class InvalidInterface(Exception):
+    """The interface has invalid contents
+    """
+
+class BadImplements(TypeError):
+    """An implementation assertion is invalid
+
+    because it doesn't contain an interface or a sequence of valid
+    implementation assertions.
+    """

venv/lib/python3.11/site-packages/zope/interface/registry.py

@@ -0,0 +1,723 @@
+##############################################################################
+#
+# Copyright (c) 2006 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Basic components support
+"""
+from collections import defaultdict
+
+try:
+    from zope.event import notify
+except ImportError: # pragma: no cover
+    def notify(*arg, **kw): pass
+
+from zope.interface.interfaces import ISpecification
+from zope.interface.interfaces import ComponentLookupError
+from zope.interface.interfaces import IAdapterRegistration
+from zope.interface.interfaces import IComponents
+from zope.interface.interfaces import IHandlerRegistration
+from zope.interface.interfaces import ISubscriptionAdapterRegistration
+from zope.interface.interfaces import IUtilityRegistration
+from zope.interface.interfaces import Registered
+from zope.interface.interfaces import Unregistered
+
+from zope.interface.interface import Interface
+from zope.interface.declarations import implementedBy
+from zope.interface.declarations import implementer
+from zope.interface.declarations import implementer_only
+from zope.interface.declarations import providedBy
+from zope.interface.adapter import AdapterRegistry
+
+__all__ = [
+    # Components is public API, but
+    # the *Registration classes are just implementations
+    # of public interfaces.
+    'Components',
+]
+
+class _UnhashableComponentCounter:
+    # defaultdict(int)-like object for unhashable components
+
+    def __init__(self, otherdict):
+        # [(component, count)]
+        self._data = [item for item in otherdict.items()]
+
+    def __getitem__(self, key):
+        for component, count in self._data:
+            if component == key:
+                return count
+        return 0
+
+    def __setitem__(self, component, count):
+        for i, data in enumerate(self._data):
+            if data[0] == component:
+                self._data[i] = component, count
+                return
+        self._data.append((component, count))
+
+    def __delitem__(self, component):
+        for i, data in enumerate(self._data):
+            if data[0] == component:
+                del self._data[i]
+                return
+        raise KeyError(component) # pragma: no cover
+
+def _defaultdict_int():
+    return defaultdict(int)
+
+class _UtilityRegistrations:
+
+    def __init__(self, utilities, utility_registrations):
+        # {provided -> {component: count}}
+        self._cache = defaultdict(_defaultdict_int)
+        self._utilities = utilities
+        self._utility_registrations = utility_registrations
+
+        self.__populate_cache()
+
+    def __populate_cache(self):
+        for ((p, _), data) in iter(self._utility_registrations.items()):
+            component = data[0]
+            self.__cache_utility(p, component)
+
+    def __cache_utility(self, provided, component):
+        try:
+            self._cache[provided][component] += 1
+        except TypeError:
+            # The component is not hashable, and we have a dict. Switch to a strategy
+            # that doesn't use hashing.
+            prov = self._cache[provided] = _UnhashableComponentCounter(self._cache[provided])
+            prov[component] += 1
+
+    def __uncache_utility(self, provided, component):
+        provided = self._cache[provided]
+        # It seems like this line could raise a TypeError if component isn't
+        # hashable and we haven't yet switched to _UnhashableComponentCounter. However,
+        # we can't actually get in that situation. In order to get here, we would
+        # have had to cache the utility already which would have switched
+        # the datastructure if needed.
+        count = provided[component]
+        count -= 1
+        if count == 0:
+            del provided[component]
+        else:
+            provided[component] = count
+        return count > 0
+
+    def _is_utility_subscribed(self, provided, component):
+        try:
+            return self._cache[provided][component] > 0
+        except TypeError:
+            # Not hashable and we're still using a dict
+            return False
+
+    def registerUtility(self, provided, name, component, info, factory):
+        subscribed = self._is_utility_subscribed(provided, component)
+
+        self._utility_registrations[(provided, name)] = component, info, factory
+        self._utilities.register((), provided, name, component)
+
+        if not subscribed:
+            self._utilities.subscribe((), provided, component)
+
+        self.__cache_utility(provided, component)
+
+    def unregisterUtility(self, provided, name, component):
+        del self._utility_registrations[(provided, name)]
+        self._utilities.unregister((), provided, name)
+
+        subscribed = self.__uncache_utility(provided, component)
+
+        if not subscribed:
+            self._utilities.unsubscribe((), provided, component)
+
+
+@implementer(IComponents)
+class Components:
+
+    _v_utility_registrations_cache = None
+
+    def __init__(self, name='', bases=()):
+        # __init__ is used for test cleanup as well as initialization.
+        # XXX add a separate API for test cleanup.
+        assert isinstance(name, str)
+        self.__name__ = name
+        self._init_registries()
+        self._init_registrations()
+        self.__bases__ = tuple(bases)
+        self._v_utility_registrations_cache = None
+
+    def __repr__(self):
+        return "<{} {}>".format(self.__class__.__name__, self.__name__)
+
+    def __reduce__(self):
+        # Mimic what a persistent.Persistent object does and elide
+        # _v_ attributes so that they don't get saved in ZODB.
+        # This allows us to store things that cannot be pickled in such
+        # attributes.
+        reduction = super().__reduce__()
+        # (callable, args, state, listiter, dictiter)
+        # We assume the state is always a dict; the last three items
+        # are technically optional and can be missing or None.
+        filtered_state = {k: v for k, v in reduction[2].items()
+                          if not k.startswith('_v_')}
+        reduction = list(reduction)
+        reduction[2] = filtered_state
+        return tuple(reduction)
+
+    def _init_registries(self):
+        # Subclasses have never been required to call this method
+        # if they override it, merely to fill in these two attributes.
+        self.adapters = AdapterRegistry()
+        self.utilities = AdapterRegistry()
+
+    def _init_registrations(self):
+        self._utility_registrations = {}
+        self._adapter_registrations = {}
+        self._subscription_registrations = []
+        self._handler_registrations = []
+
+    @property
+    def _utility_registrations_cache(self):
+        # We use a _v_ attribute internally so that data aren't saved in ZODB,
+        # because this object cannot be pickled.
+        cache = self._v_utility_registrations_cache
+        if (cache is None
+            or cache._utilities is not self.utilities
+            or cache._utility_registrations is not self._utility_registrations):
+            cache = self._v_utility_registrations_cache = _UtilityRegistrations(
+                self.utilities,
+                self._utility_registrations)
+        return cache
+
+    def _getBases(self):
+        # Subclasses might override
+        return self.__dict__.get('__bases__', ())
+
+    def _setBases(self, bases):
+        # Subclasses might override
+        self.adapters.__bases__ = tuple([
+            base.adapters for base in bases])
+        self.utilities.__bases__ = tuple([
+            base.utilities for base in bases])
+        self.__dict__['__bases__'] = tuple(bases)
+
+    __bases__ = property(
+        lambda self: self._getBases(),
+        lambda self, bases: self._setBases(bases),
+        )
+
+    def registerUtility(self, component=None, provided=None, name='',
+                        info='', event=True, factory=None):
+        if factory:
+            if component:
+                raise TypeError("Can't specify factory and component.")
+            component = factory()
+
+        if provided is None:
+            provided = _getUtilityProvided(component)
+
+        if name == '':
+            name = _getName(component)
+
+        reg = self._utility_registrations.get((provided, name))
+        if reg is not None:
+            if reg[:2] == (component, info):
+                # already registered
+                return
+            self.unregisterUtility(reg[0], provided, name)
+
+        self._utility_registrations_cache.registerUtility(
+            provided, name, component, info, factory)
+
+        if event:
+            notify(Registered(
+                UtilityRegistration(self, provided, name, component, info,
+                                    factory)
+                ))
+
+    def unregisterUtility(self, component=None, provided=None, name='',
+                          factory=None):
+        if factory:
+            if component:
+                raise TypeError("Can't specify factory and component.")
+            component = factory()
+
+        if provided is None:
+            if component is None:
+                raise TypeError("Must specify one of component, factory and "
+                                "provided")
+            provided = _getUtilityProvided(component)
+
+        old = self._utility_registrations.get((provided, name))
+        if (old is None) or ((component is not None) and
+                             (component != old[0])):
+            return False
+
+        if component is None:
+            component = old[0]
+
+        # Note that component is now the old thing registered
+        self._utility_registrations_cache.unregisterUtility(
+            provided, name, component)
+
+        notify(Unregistered(
+            UtilityRegistration(self, provided, name, component, *old[1:])
+            ))
+
+        return True
+
+    def registeredUtilities(self):
+        for ((provided, name), data
+             ) in iter(self._utility_registrations.items()):
+            yield UtilityRegistration(self, provided, name, *data)
+
+    def queryUtility(self, provided, name='', default=None):
+        return self.utilities.lookup((), provided, name, default)
+
+    def getUtility(self, provided, name=''):
+        utility = self.utilities.lookup((), provided, name)
+        if utility is None:
+            raise ComponentLookupError(provided, name)
+        return utility
+
+    def getUtilitiesFor(self, interface):
+        yield from self.utilities.lookupAll((), interface)
+
+    def getAllUtilitiesRegisteredFor(self, interface):
+        return self.utilities.subscriptions((), interface)
+
+    def registerAdapter(self, factory, required=None, provided=None,
+                        name='', info='', event=True):
+        if provided is None:
+            provided = _getAdapterProvided(factory)
+        required = _getAdapterRequired(factory, required)
+        if name == '':
+            name = _getName(factory)
+        self._adapter_registrations[(required, provided, name)
+                                    ] = factory, info
+        self.adapters.register(required, provided, name, factory)
+
+        if event:
+            notify(Registered(
+                AdapterRegistration(self, required, provided, name,
+                                    factory, info)
+                ))
+
+
+    def unregisterAdapter(self, factory=None,
+                          required=None, provided=None, name='',
+                          ):
+        if provided is None:
+            if factory is None:
+                raise TypeError("Must specify one of factory and provided")
+            provided = _getAdapterProvided(factory)
+
+        if (required is None) and (factory is None):
+            raise TypeError("Must specify one of factory and required")
+
+        required = _getAdapterRequired(factory, required)
+        old = self._adapter_registrations.get((required, provided, name))
+        if (old is None) or ((factory is not None) and
+                             (factory != old[0])):
+            return False
+
+        del self._adapter_registrations[(required, provided, name)]
+        self.adapters.unregister(required, provided, name)
+
+        notify(Unregistered(
+            AdapterRegistration(self, required, provided, name,
+                                *old)
+            ))
+
+        return True
+
+    def registeredAdapters(self):
+        for ((required, provided, name), (component, info)
+             ) in iter(self._adapter_registrations.items()):
+            yield AdapterRegistration(self, required, provided, name,
+                                      component, info)
+
+    def queryAdapter(self, object, interface, name='', default=None):
+        return self.adapters.queryAdapter(object, interface, name, default)
+
+    def getAdapter(self, object, interface, name=''):
+        adapter = self.adapters.queryAdapter(object, interface, name)
+        if adapter is None:
+            raise ComponentLookupError(object, interface, name)
+        return adapter
+
+    def queryMultiAdapter(self, objects, interface, name='',
+                          default=None):
+        return self.adapters.queryMultiAdapter(
+            objects, interface, name, default)
+
+    def getMultiAdapter(self, objects, interface, name=''):
+        adapter = self.adapters.queryMultiAdapter(objects, interface, name)
+        if adapter is None:
+            raise ComponentLookupError(objects, interface, name)
+        return adapter
+
+    def getAdapters(self, objects, provided):
+        for name, factory in self.adapters.lookupAll(
+            list(map(providedBy, objects)),
+            provided):
+            adapter = factory(*objects)
+            if adapter is not None:
+                yield name, adapter
+
+    def registerSubscriptionAdapter(self,
+                                    factory, required=None, provided=None,
+                                    name='', info='',
+                                    event=True):
+        if name:
+            raise TypeError("Named subscribers are not yet supported")
+        if provided is None:
+            provided = _getAdapterProvided(factory)
+        required = _getAdapterRequired(factory, required)
+        self._subscription_registrations.append(
+            (required, provided, name, factory, info)
+            )
+        self.adapters.subscribe(required, provided, factory)
+
+        if event:
+            notify(Registered(
+                SubscriptionRegistration(self, required, provided, name,
+                                         factory, info)
+                ))
+
+    def registeredSubscriptionAdapters(self):
+        for data in self._subscription_registrations:
+            yield SubscriptionRegistration(self, *data)
+
+    def unregisterSubscriptionAdapter(self, factory=None,
+                          required=None, provided=None, name='',
+                          ):
+        if name:
+            raise TypeError("Named subscribers are not yet supported")
+        if provided is None:
+            if factory is None:
+                raise TypeError("Must specify one of factory and provided")
+            provided = _getAdapterProvided(factory)
+
+        if (required is None) and (factory is None):
+            raise TypeError("Must specify one of factory and required")
+
+        required = _getAdapterRequired(factory, required)
+
+        if factory is None:
+            new = [(r, p, n, f, i)
+                   for (r, p, n, f, i)
+                   in self._subscription_registrations
+                   if not (r == required and p == provided)
+                   ]
+        else:
+            new = [(r, p, n, f, i)
+                   for (r, p, n, f, i)
+                   in self._subscription_registrations
+                   if not (r == required and p == provided and f == factory)
+                   ]
+
+        if len(new) == len(self._subscription_registrations):
+            return False
+
+
+        self._subscription_registrations[:] = new
+        self.adapters.unsubscribe(required, provided, factory)
+
+        notify(Unregistered(
+            SubscriptionRegistration(self, required, provided, name,
+                                     factory, '')
+            ))
+
+        return True
+
+    def subscribers(self, objects, provided):
+        return self.adapters.subscribers(objects, provided)
+
+    def registerHandler(self,
+                        factory, required=None,
+                        name='', info='',
+                        event=True):
+        if name:
+            raise TypeError("Named handlers are not yet supported")
+        required = _getAdapterRequired(factory, required)
+        self._handler_registrations.append(
+            (required, name, factory, info)
+            )
+        self.adapters.subscribe(required, None, factory)
+
+        if event:
+            notify(Registered(
+                HandlerRegistration(self, required, name, factory, info)
+                ))
+
+    def registeredHandlers(self):
+        for data in self._handler_registrations:
+            yield HandlerRegistration(self, *data)
+
+    def unregisterHandler(self, factory=None, required=None, name=''):
+        if name:
+            raise TypeError("Named subscribers are not yet supported")
+
+        if (required is None) and (factory is None):
+            raise TypeError("Must specify one of factory and required")
+
+        required = _getAdapterRequired(factory, required)
+
+        if factory is None:
+            new = [(r, n, f, i)
+                   for (r, n, f, i)
+                   in self._handler_registrations
+                   if r != required
+                   ]
+        else:
+            new = [(r, n, f, i)
+                   for (r, n, f, i)
+                   in self._handler_registrations
+                   if not (r == required and f == factory)
+                   ]
+
+        if len(new) == len(self._handler_registrations):
+            return False
+
+        self._handler_registrations[:] = new
+        self.adapters.unsubscribe(required, None, factory)
+
+        notify(Unregistered(
+            HandlerRegistration(self, required, name, factory, '')
+            ))
+
+        return True
+
+    def handle(self, *objects):
+        self.adapters.subscribers(objects, None)
+
+    def rebuildUtilityRegistryFromLocalCache(self, rebuild=False):
+        """
+        Emergency maintenance method to rebuild the ``.utilities``
+        registry from the local copy maintained in this object, or
+        detect the need to do so.
+
+        Most users will never need to call this, but it can be helpful
+        in the event of suspected corruption.
+
+        By default, this method only checks for corruption. To make it
+        actually rebuild the registry, pass `True` for *rebuild*.
+
+        :param bool rebuild: If set to `True` (not the default),
+           this method will actually register and subscribe utilities
+           in the registry as needed to synchronize with the local cache.
+
+        :return: A dictionary that's meant as diagnostic data. The keys
+           and values may change over time. When called with a false *rebuild*,
+           the keys ``"needed_registered"`` and ``"needed_subscribed"`` will be
+           non-zero if any corruption was detected, but that will not be corrected.
+
+        .. versionadded:: 5.3.0
+        """
+        regs = dict(self._utility_registrations)
+        utils = self.utilities
+        needed_registered = 0
+        did_not_register = 0
+        needed_subscribed = 0
+        did_not_subscribe = 0
+
+
+        # Avoid the expensive change process during this; we'll call
+        # it once at the end if needed.
+        assert 'changed' not in utils.__dict__
+        utils.changed = lambda _: None
+
+        if rebuild:
+            register = utils.register
+            subscribe = utils.subscribe
+        else:
+            register = subscribe = lambda *args: None
+
+        try:
+            for (provided, name), (value, _info, _factory) in regs.items():
+                if utils.registered((), provided, name) != value:
+                    register((), provided, name, value)
+                    needed_registered += 1
+                else:
+                    did_not_register += 1
+
+                if utils.subscribed((), provided, value) is None:
+                    needed_subscribed += 1
+                    subscribe((), provided, value)
+                else:
+                    did_not_subscribe += 1
+        finally:
+            del utils.changed
+            if rebuild and (needed_subscribed or needed_registered):
+                utils.changed(utils)
+
+        return {
+            'needed_registered': needed_registered,
+            'did_not_register': did_not_register,
+            'needed_subscribed': needed_subscribed,
+            'did_not_subscribe': did_not_subscribe
+        }
+
+def _getName(component):
+    try:
+        return component.__component_name__
+    except AttributeError:
+        return ''
+
+def _getUtilityProvided(component):
+    provided = list(providedBy(component))
+    if len(provided) == 1:
+        return provided[0]
+    raise TypeError(
+        "The utility doesn't provide a single interface "
+        "and no provided interface was specified.")
+
+def _getAdapterProvided(factory):
+    provided = list(implementedBy(factory))
+    if len(provided) == 1:
+        return provided[0]
+    raise TypeError(
+        "The adapter factory doesn't implement a single interface "
+        "and no provided interface was specified.")
+
+def _getAdapterRequired(factory, required):
+    if required is None:
+        try:
+            required = factory.__component_adapts__
+        except AttributeError:
+            raise TypeError(
+                "The adapter factory doesn't have a __component_adapts__ "
+                "attribute and no required specifications were specified"
+                )
+    elif ISpecification.providedBy(required):
+        raise TypeError("the required argument should be a list of "
+                        "interfaces, not a single interface")
+
+    result = []
+    for r in required:
+        if r is None:
+            r = Interface
+        elif not ISpecification.providedBy(r):
+            if isinstance(r, type):
+                r = implementedBy(r)
+            else:
+                raise TypeError("Required specification must be a "
+                                "specification or class, not %r" % type(r)
+                                )
+        result.append(r)
+    return tuple(result)
+
+
+@implementer(IUtilityRegistration)
+class UtilityRegistration:
+
+    def __init__(self, registry, provided, name, component, doc, factory=None):
+        (self.registry, self.provided, self.name, self.component, self.info,
+         self.factory
+         ) = registry, provided, name, component, doc, factory
+
+    def __repr__(self):
+        return '{}({!r}, {}, {!r}, {}, {!r}, {!r})'.format(
+                self.__class__.__name__,
+                self.registry,
+                getattr(self.provided, '__name__', None), self.name,
+                getattr(self.component, '__name__', repr(self.component)),
+                self.factory, self.info,
+                )
+
+    def __hash__(self):
+        return id(self)
+
+    def __eq__(self, other):
+        return repr(self) == repr(other)
+
+    def __ne__(self, other):
+        return repr(self) != repr(other)
+
+    def __lt__(self, other):
+        return repr(self) < repr(other)
+
+    def __le__(self, other):
+        return repr(self) <= repr(other)
+
+    def __gt__(self, other):
+        return repr(self) > repr(other)
+
+    def __ge__(self, other):
+        return repr(self) >= repr(other)
+
+@implementer(IAdapterRegistration)
+class AdapterRegistration:
+
+    def __init__(self, registry, required, provided, name, component, doc):
+        (self.registry, self.required, self.provided, self.name,
+         self.factory, self.info
+         ) = registry, required, provided, name, component, doc
+
+    def __repr__(self):
+        return '{}({!r}, {}, {}, {!r}, {}, {!r})'.format(
+            self.__class__.__name__,
+            self.registry,
+            '[' + ", ".join([r.__name__ for r in self.required]) + ']',
+            getattr(self.provided, '__name__', None), self.name,
+            getattr(self.factory, '__name__', repr(self.factory)), self.info,
+            )
+
+    def __hash__(self):
+        return id(self)
+
+    def __eq__(self, other):
+        return repr(self) == repr(other)
+
+    def __ne__(self, other):
+        return repr(self) != repr(other)
+
+    def __lt__(self, other):
+        return repr(self) < repr(other)
+
+    def __le__(self, other):
+        return repr(self) <= repr(other)
+
+    def __gt__(self, other):
+        return repr(self) > repr(other)
+
+    def __ge__(self, other):
+        return repr(self) >= repr(other)
+
+@implementer_only(ISubscriptionAdapterRegistration)
+class SubscriptionRegistration(AdapterRegistration):
+    pass
+
+
+@implementer_only(IHandlerRegistration)
+class HandlerRegistration(AdapterRegistration):
+
+    def __init__(self, registry, required, name, handler, doc):
+        (self.registry, self.required, self.name, self.handler, self.info
+         ) = registry, required, name, handler, doc
+
+    @property
+    def factory(self):
+        return self.handler
+
+    provided = None
+
+    def __repr__(self):
+        return '{}({!r}, {}, {!r}, {}, {!r})'.format(
+            self.__class__.__name__,
+            self.registry,
+            '[' + ", ".join([r.__name__ for r in self.required]) + ']',
+            self.name,
+            getattr(self.factory, '__name__', repr(self.factory)), self.info,
+            )

venv/lib/python3.11/site-packages/zope/interface/ro.py

@@ -0,0 +1,665 @@
+##############################################################################
+#
+# Copyright (c) 2003 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""
+Compute a resolution order for an object and its bases.
+
+.. versionchanged:: 5.0
+   The resolution order is now based on the same C3 order that Python
+   uses for classes. In complex instances of multiple inheritance, this
+   may result in a different ordering.
+
+   In older versions, the ordering wasn't required to be C3 compliant,
+   and for backwards compatibility, it still isn't. If the ordering
+   isn't C3 compliant (if it is *inconsistent*), zope.interface will
+   make a best guess to try to produce a reasonable resolution order.
+   Still (just as before), the results in such cases may be
+   surprising.
+
+.. rubric:: Environment Variables
+
+Due to the change in 5.0, certain environment variables can be used to control errors
+and warnings about inconsistent resolution orders. They are listed in priority order, with
+variables at the bottom generally overriding variables above them.
+
+ZOPE_INTERFACE_WARN_BAD_IRO
+    If this is set to "1", then if there is at least one inconsistent resolution
+    order discovered, a warning (:class:`InconsistentResolutionOrderWarning`) will
+    be issued. Use the usual warning mechanisms to control this behaviour. The warning
+    text will contain additional information on debugging.
+ZOPE_INTERFACE_TRACK_BAD_IRO
+    If this is set to "1", then zope.interface will log information about each
+    inconsistent resolution order discovered, and keep those details in memory in this module
+    for later inspection.
+ZOPE_INTERFACE_STRICT_IRO
+    If this is set to "1", any attempt to use :func:`ro` that would produce a non-C3
+    ordering will fail by raising :class:`InconsistentResolutionOrderError`.
+
+.. important::
+
+   ``ZOPE_INTERFACE_STRICT_IRO`` is intended to become the default in the future.
+
+There are two environment variables that are independent.
+
+ZOPE_INTERFACE_LOG_CHANGED_IRO
+    If this is set to "1", then if the C3 resolution order is different from
+    the legacy resolution order for any given object, a message explaining the differences
+    will be logged. This is intended to be used for debugging complicated IROs.
+ZOPE_INTERFACE_USE_LEGACY_IRO
+    If this is set to "1", then the C3 resolution order will *not* be used. The
+    legacy IRO will be used instead. This is a temporary measure and will be removed in the
+    future. It is intended to help during the transition.
+    It implies ``ZOPE_INTERFACE_LOG_CHANGED_IRO``.
+
+.. rubric:: Debugging Behaviour Changes in zope.interface 5
+
+Most behaviour changes from zope.interface 4 to 5 are related to
+inconsistent resolution orders. ``ZOPE_INTERFACE_STRICT_IRO`` is the
+most effective tool to find such inconsistent resolution orders, and
+we recommend running your code with this variable set if at all
+possible. Doing so will ensure that all interface resolution orders
+are consistent, and if they're not, will immediately point the way to
+where this is violated.
+
+Occasionally, however, this may not be enough. This is because in some
+cases, a C3 ordering can be found (the resolution order is fully
+consistent) that is substantially different from the ad-hoc legacy
+ordering. In such cases, you may find that you get an unexpected value
+returned when adapting one or more objects to an interface. To debug
+this, *also* enable ``ZOPE_INTERFACE_LOG_CHANGED_IRO`` and examine the
+output. The main thing to look for is changes in the relative
+positions of interfaces for which there are registered adapters.
+"""
+__docformat__ = 'restructuredtext'
+
+__all__ = [
+    'ro',
+    'InconsistentResolutionOrderError',
+    'InconsistentResolutionOrderWarning',
+]
+
+__logger = None
+
+def _logger():
+    global __logger # pylint:disable=global-statement
+    if __logger is None:
+        import logging
+        __logger = logging.getLogger(__name__)
+    return __logger
+
+def _legacy_mergeOrderings(orderings):
+    """Merge multiple orderings so that within-ordering order is preserved
+
+    Orderings are constrained in such a way that if an object appears
+    in two or more orderings, then the suffix that begins with the
+    object must be in both orderings.
+
+    For example:
+
+    >>> _mergeOrderings([
+    ... ['x', 'y', 'z'],
+    ... ['q', 'z'],
+    ... [1, 3, 5],
+    ... ['z']
+    ... ])
+    ['x', 'y', 'q', 1, 3, 5, 'z']
+
+    """
+
+    seen = set()
+    result = []
+    for ordering in reversed(orderings):
+        for o in reversed(ordering):
+            if o not in seen:
+                seen.add(o)
+                result.insert(0, o)
+
+    return result
+
+def _legacy_flatten(begin):
+    result = [begin]
+    i = 0
+    for ob in iter(result):
+        i += 1
+        # The recursive calls can be avoided by inserting the base classes
+        # into the dynamically growing list directly after the currently
+        # considered object;  the iterator makes sure this will keep working
+        # in the future, since it cannot rely on the length of the list
+        # by definition.
+        result[i:i] = ob.__bases__
+    return result
+
+def _legacy_ro(ob):
+    return _legacy_mergeOrderings([_legacy_flatten(ob)])
+
+###
+# Compare base objects using identity, not equality. This matches what
+# the CPython MRO algorithm does, and is *much* faster to boot: that,
+# plus some other small tweaks makes the difference between 25s and 6s
+# in loading 446 plone/zope interface.py modules (1925 InterfaceClass,
+# 1200 Implements, 1100 ClassProvides objects)
+###
+
+
+class InconsistentResolutionOrderWarning(PendingDeprecationWarning):
+    """
+    The warning issued when an invalid IRO is requested.
+    """
+
+class InconsistentResolutionOrderError(TypeError):
+    """
+    The error raised when an invalid IRO is requested in strict mode.
+    """
+
+    def __init__(self, c3, base_tree_remaining):
+        self.C = c3.leaf
+        base_tree = c3.base_tree
+        self.base_ros = {
+            base: base_tree[i + 1]
+            for i, base in enumerate(self.C.__bases__)
+        }
+        # Unfortunately, this doesn't necessarily directly match
+        # up to any transformation on C.__bases__, because
+        # if any were fully used up, they were removed already.
+        self.base_tree_remaining = base_tree_remaining
+
+        TypeError.__init__(self)
+
+    def __str__(self):
+        import pprint
+        return "{}: For object {!r}.\nBase ROs:\n{}\nConflict Location:\n{}".format(
+            self.__class__.__name__,
+            self.C,
+            pprint.pformat(self.base_ros),
+            pprint.pformat(self.base_tree_remaining),
+        )
+
+
+class _NamedBool(int): # cannot actually inherit bool
+
+    def __new__(cls, val, name):
+        inst = super(cls, _NamedBool).__new__(cls, val)
+        inst.__name__ = name
+        return inst
+
+
+class _ClassBoolFromEnv:
+    """
+    Non-data descriptor that reads a transformed environment variable
+    as a boolean, and caches the result in the class.
+    """
+
+    def __get__(self, inst, klass):
+        import os
+        for cls in klass.__mro__:
+            my_name = None
+            for k in dir(klass):
+                if k in cls.__dict__ and cls.__dict__[k] is self:
+                    my_name = k
+                    break
+            if my_name is not None:
+                break
+        else: # pragma: no cover
+            raise RuntimeError("Unable to find self")
+
+        env_name = 'ZOPE_INTERFACE_' + my_name
+        val = os.environ.get(env_name, '') == '1'
+        val = _NamedBool(val, my_name)
+        setattr(klass, my_name, val)
+        setattr(klass, 'ORIG_' + my_name, self)
+        return val
+
+
+class _StaticMRO:
+    # A previously resolved MRO, supplied by the caller.
+    # Used in place of calculating it.
+
+    had_inconsistency = None # We don't know...
+
+    def __init__(self, C, mro):
+        self.leaf = C
+        self.__mro = tuple(mro)
+
+    def mro(self):
+        return list(self.__mro)
+
+
+class C3:
+    # Holds the shared state during computation of an MRO.
+
+    @staticmethod
+    def resolver(C, strict, base_mros):
+        strict = strict if strict is not None else C3.STRICT_IRO
+        factory = C3
+        if strict:
+            factory = _StrictC3
+        elif C3.TRACK_BAD_IRO:
+            factory = _TrackingC3
+
+        memo = {}
+        base_mros = base_mros or {}
+        for base, mro in base_mros.items():
+            assert base in C.__bases__
+            memo[base] = _StaticMRO(base, mro)
+
+        return factory(C, memo)
+
+    __mro = None
+    __legacy_ro = None
+    direct_inconsistency = False
+
+    def __init__(self, C, memo):
+        self.leaf = C
+        self.memo = memo
+        kind = self.__class__
+
+        base_resolvers = []
+        for base in C.__bases__:
+            if base not in memo:
+                resolver = kind(base, memo)
+                memo[base] = resolver
+            base_resolvers.append(memo[base])
+
+        self.base_tree = [
+            [C]
+        ] + [
+            memo[base].mro() for base in C.__bases__
+        ] + [
+            list(C.__bases__)
+        ]
+
+        self.bases_had_inconsistency = any(base.had_inconsistency for base in base_resolvers)
+
+        if len(C.__bases__) == 1:
+            self.__mro = [C] + memo[C.__bases__[0]].mro()
+
+    @property
+    def had_inconsistency(self):
+        return self.direct_inconsistency or self.bases_had_inconsistency
+
+    @property
+    def legacy_ro(self):
+        if self.__legacy_ro is None:
+            self.__legacy_ro = tuple(_legacy_ro(self.leaf))
+        return list(self.__legacy_ro)
+
+    TRACK_BAD_IRO = _ClassBoolFromEnv()
+    STRICT_IRO = _ClassBoolFromEnv()
+    WARN_BAD_IRO = _ClassBoolFromEnv()
+    LOG_CHANGED_IRO = _ClassBoolFromEnv()
+    USE_LEGACY_IRO = _ClassBoolFromEnv()
+    BAD_IROS = ()
+
+    def _warn_iro(self):
+        if not self.WARN_BAD_IRO:
+            # For the initial release, one must opt-in to see the warning.
+            # In the future (2021?) seeing at least the first warning will
+            # be the default
+            return
+        import warnings
+        warnings.warn(
+            "An inconsistent resolution order is being requested. "
+            "(Interfaces should follow the Python class rules known as C3.) "
+            "For backwards compatibility, zope.interface will allow this, "
+            "making the best guess it can to produce as meaningful an order as possible. "
+            "In the future this might be an error. Set the warning filter to error, or set "
+            "the environment variable 'ZOPE_INTERFACE_TRACK_BAD_IRO' to '1' and examine "
+            "ro.C3.BAD_IROS to debug, or set 'ZOPE_INTERFACE_STRICT_IRO' to raise exceptions.",
+            InconsistentResolutionOrderWarning,
+        )
+
+    @staticmethod
+    def _can_choose_base(base, base_tree_remaining):
+        # From C3:
+        # nothead = [s for s in nonemptyseqs if cand in s[1:]]
+        for bases in base_tree_remaining:
+            if not bases or bases[0] is base:
+                continue
+
+            for b in bases:
+                if b is base:
+                    return False
+        return True
+
+    @staticmethod
+    def _nonempty_bases_ignoring(base_tree, ignoring):
+        return list(filter(None, [
+            [b for b in bases if b is not ignoring]
+            for bases
+            in base_tree
+        ]))
+
+    def _choose_next_base(self, base_tree_remaining):
+        """
+        Return the next base.
+
+        The return value will either fit the C3 constraints or be our best
+        guess about what to do. If we cannot guess, this may raise an exception.
+        """
+        base = self._find_next_C3_base(base_tree_remaining)
+        if base is not None:
+            return base
+        return self._guess_next_base(base_tree_remaining)
+
+    def _find_next_C3_base(self, base_tree_remaining):
+        """
+        Return the next base that fits the constraints, or ``None`` if there isn't one.
+        """
+        for bases in base_tree_remaining:
+            base = bases[0]
+            if self._can_choose_base(base, base_tree_remaining):
+                return base
+        return None
+
+    class _UseLegacyRO(Exception):
+        pass
+
+    def _guess_next_base(self, base_tree_remaining):
+        # Narf. We may have an inconsistent order (we won't know for
+        # sure until we check all the bases). Python cannot create
+        # classes like this:
+        #
+        # class B1:
+        #   pass
+        # class B2(B1):
+        #   pass
+        # class C(B1, B2): # -> TypeError; this is like saying C(B1, B2, B1).
+        #  pass
+        #
+        # However, older versions of zope.interface were fine with this order.
+        # A good example is ``providedBy(IOError())``. Because of the way
+        # ``classImplements`` works, it winds up with ``__bases__`` ==
+        # ``[IEnvironmentError, IIOError, IOSError, <implementedBy Exception>]``
+        # (on Python 3). But ``IEnvironmentError`` is a base of both ``IIOError``
+        # and ``IOSError``. Previously, we would get a resolution order of
+        # ``[IIOError, IOSError, IEnvironmentError, IStandardError, IException, Interface]``
+        # but the standard Python algorithm would forbid creating that order entirely.
+
+        # Unlike Python's MRO, we attempt to resolve the issue. A few
+        # heuristics have been tried. One was:
+        #
+        # Strip off the first (highest priority) base of each direct
+        # base one at a time and seeing if we can come to an agreement
+        # with the other bases. (We're trying for a partial ordering
+        # here.) This often resolves cases (such as the IOSError case
+        # above), and frequently produces the same ordering as the
+        # legacy MRO did. If we looked at all the highest priority
+        # bases and couldn't find any partial ordering, then we strip
+        # them *all* out and begin the C3 step again. We take care not
+        # to promote a common root over all others.
+        #
+        # If we only did the first part, stripped off the first
+        # element of the first item, we could resolve simple cases.
+        # But it tended to fail badly. If we did the whole thing, it
+        # could be extremely painful from a performance perspective
+        # for deep/wide things like Zope's OFS.SimpleItem.Item. Plus,
+        # anytime you get ExtensionClass.Base into the mix, you're
+        # likely to wind up in trouble, because it messes with the MRO
+        # of classes. Sigh.
+        #
+        # So now, we fall back to the old linearization (fast to compute).
+        self._warn_iro()
+        self.direct_inconsistency = InconsistentResolutionOrderError(self, base_tree_remaining)
+        raise self._UseLegacyRO
+
+    def _merge(self):
+        # Returns a merged *list*.
+        result = self.__mro = []
+        base_tree_remaining = self.base_tree
+        base = None
+        while 1:
+            # Take last picked base out of the base tree wherever it is.
+            # This differs slightly from the standard Python MRO and is needed
+            # because we have no other step that prevents duplicates
+            # from coming in (e.g., in the inconsistent fallback path)
+            base_tree_remaining = self._nonempty_bases_ignoring(base_tree_remaining, base)
+
+            if not base_tree_remaining:
+                return result
+            try:
+                base = self._choose_next_base(base_tree_remaining)
+            except self._UseLegacyRO:
+                self.__mro = self.legacy_ro
+                return self.legacy_ro
+
+            result.append(base)
+
+    def mro(self):
+        if self.__mro is None:
+            self.__mro = tuple(self._merge())
+        return list(self.__mro)
+
+
+class _StrictC3(C3):
+    __slots__ = ()
+    def _guess_next_base(self, base_tree_remaining):
+        raise InconsistentResolutionOrderError(self, base_tree_remaining)
+
+
+class _TrackingC3(C3):
+    __slots__ = ()
+    def _guess_next_base(self, base_tree_remaining):
+        import traceback
+        bad_iros = C3.BAD_IROS
+        if self.leaf not in bad_iros:
+            if bad_iros == ():
+                import weakref
+                # This is a race condition, but it doesn't matter much.
+                bad_iros = C3.BAD_IROS = weakref.WeakKeyDictionary()
+            bad_iros[self.leaf] = t = (
+                InconsistentResolutionOrderError(self, base_tree_remaining),
+                traceback.format_stack()
+            )
+            _logger().warning("Tracking inconsistent IRO: %s", t[0])
+        return C3._guess_next_base(self, base_tree_remaining)
+
+
+class _ROComparison:
+    # Exists to compute and print a pretty string comparison
+    # for differing ROs.
+    # Since we're used in a logging context, and may actually never be printed,
+    # this is a class so we can defer computing the diff until asked.
+
+    # Components we use to build up the comparison report
+    class Item:
+        prefix = '  '
+        def __init__(self, item):
+            self.item = item
+        def __str__(self):
+            return "{}{}".format(
+                self.prefix,
+                self.item,
+            )
+
+    class Deleted(Item):
+        prefix = '- '
+
+    class Inserted(Item):
+        prefix = '+ '
+
+    Empty = str
+
+    class ReplacedBy: # pragma: no cover
+        prefix = '- '
+        suffix = ''
+        def __init__(self, chunk, total_count):
+            self.chunk = chunk
+            self.total_count = total_count
+
+        def __iter__(self):
+            lines = [
+                self.prefix + str(item) + self.suffix
+                for item in self.chunk
+            ]
+            while len(lines) < self.total_count:
+                lines.append('')
+
+            return iter(lines)
+
+    class Replacing(ReplacedBy):
+        prefix = "+ "
+        suffix = ''
+
+
+    _c3_report = None
+    _legacy_report = None
+
+    def __init__(self, c3, c3_ro, legacy_ro):
+        self.c3 = c3
+        self.c3_ro = c3_ro
+        self.legacy_ro = legacy_ro
+
+    def __move(self, from_, to_, chunk, operation):
+        for x in chunk:
+            to_.append(operation(x))
+            from_.append(self.Empty())
+
+    def _generate_report(self):
+        if self._c3_report is None:
+            import difflib
+            # The opcodes we get describe how to turn 'a' into 'b'. So
+            # the old one (legacy) needs to be first ('a')
+            matcher = difflib.SequenceMatcher(None, self.legacy_ro, self.c3_ro)
+            # The reports are equal length sequences. We're going for a
+            # side-by-side diff.
+            self._c3_report = c3_report = []
+            self._legacy_report = legacy_report = []
+            for opcode, leg1, leg2, c31, c32 in matcher.get_opcodes():
+                c3_chunk = self.c3_ro[c31:c32]
+                legacy_chunk = self.legacy_ro[leg1:leg2]
+
+                if opcode == 'equal':
+                    # Guaranteed same length
+                    c3_report.extend(self.Item(x) for x in c3_chunk)
+                    legacy_report.extend(self.Item(x) for x in legacy_chunk)
+                if opcode == 'delete':
+                    # Guaranteed same length
+                    assert not c3_chunk
+                    self.__move(c3_report, legacy_report, legacy_chunk, self.Deleted)
+                if opcode == 'insert':
+                    # Guaranteed same length
+                    assert not legacy_chunk
+                    self.__move(legacy_report, c3_report, c3_chunk, self.Inserted)
+                if opcode == 'replace': # pragma: no cover (How do you make it output this?)
+                    # Either side could be longer.
+                    chunk_size = max(len(c3_chunk), len(legacy_chunk))
+                    c3_report.extend(self.Replacing(c3_chunk, chunk_size))
+                    legacy_report.extend(self.ReplacedBy(legacy_chunk, chunk_size))
+
+        return self._c3_report, self._legacy_report
+
+    @property
+    def _inconsistent_label(self):
+        inconsistent = []
+        if self.c3.direct_inconsistency:
+            inconsistent.append('direct')
+        if self.c3.bases_had_inconsistency:
+            inconsistent.append('bases')
+        return '+'.join(inconsistent) if inconsistent else 'no'
+
+    def __str__(self):
+        c3_report, legacy_report = self._generate_report()
+        assert len(c3_report) == len(legacy_report)
+
+        left_lines = [str(x) for x in legacy_report]
+        right_lines = [str(x) for x in c3_report]
+
+        # We have the same number of lines in the report; this is not
+        # necessarily the same as the number of items in either RO.
+        assert len(left_lines) == len(right_lines)
+
+        padding = ' ' * 2
+        max_left = max(len(x) for x in left_lines)
+        max_right = max(len(x) for x in right_lines)
+
+        left_title = 'Legacy RO (len={})'.format(len(self.legacy_ro))
+
+        right_title = 'C3 RO (len={}; inconsistent={})'.format(
+            len(self.c3_ro),
+            self._inconsistent_label,
+        )
+        lines = [
+            (padding + left_title.ljust(max_left) + padding + right_title.ljust(max_right)),
+            padding + '=' * (max_left + len(padding) + max_right)
+        ]
+        lines += [
+            padding + left.ljust(max_left) + padding + right
+            for left, right in zip(left_lines, right_lines)
+        ]
+
+        return '\n'.join(lines)
+
+
+# Set to `Interface` once it is defined. This is used to
+# avoid logging false positives about changed ROs.
+_ROOT = None
+
+def ro(C, strict=None, base_mros=None, log_changed_ro=None, use_legacy_ro=None):
+    """
+    ro(C) -> list
+
+    Compute the precedence list (mro) according to C3.
+
+    :return: A fresh `list` object.
+
+    .. versionchanged:: 5.0.0
+       Add the *strict*, *log_changed_ro* and *use_legacy_ro*
+       keyword arguments. These are provisional and likely to be
+       removed in the future. They are most useful for testing.
+    """
+    # The ``base_mros`` argument is for internal optimization and
+    # not documented.
+    resolver = C3.resolver(C, strict, base_mros)
+    mro = resolver.mro()
+
+    log_changed = log_changed_ro if log_changed_ro is not None else resolver.LOG_CHANGED_IRO
+    use_legacy = use_legacy_ro if use_legacy_ro is not None else resolver.USE_LEGACY_IRO
+
+    if log_changed or use_legacy:
+        legacy_ro = resolver.legacy_ro
+        assert isinstance(legacy_ro, list)
+        assert isinstance(mro, list)
+        changed = legacy_ro != mro
+        if changed:
+            # Did only Interface move? The fix for issue #8 made that
+            # somewhat common. It's almost certainly not a problem, though,
+            # so allow ignoring it.
+            legacy_without_root = [x for x in legacy_ro if x is not _ROOT]
+            mro_without_root = [x for x in mro if x is not _ROOT]
+            changed = legacy_without_root != mro_without_root
+
+        if changed:
+            comparison = _ROComparison(resolver, mro, legacy_ro)
+            _logger().warning(
+                "Object %r has different legacy and C3 MROs:\n%s",
+                C, comparison
+            )
+        if resolver.had_inconsistency and legacy_ro == mro:
+            comparison = _ROComparison(resolver, mro, legacy_ro)
+            _logger().warning(
+                "Object %r had inconsistent IRO and used the legacy RO:\n%s"
+                "\nInconsistency entered at:\n%s",
+                C, comparison, resolver.direct_inconsistency
+            )
+        if use_legacy:
+            return legacy_ro
+
+    return mro
+
+
+def is_consistent(C):
+    """
+    Check if the resolution order for *C*, as computed by :func:`ro`, is consistent
+    according to C3.
+    """
+    return not C3.resolver(C, False, None).had_inconsistency

venv/lib/python3.11/site-packages/zope/interface/tests/__init__.py

@@ -0,0 +1,115 @@
+from zope.interface._compat import _should_attempt_c_optimizations
+
+
+class OptimizationTestMixin:
+    """
+    Helper for testing that C optimizations are used
+    when appropriate.
+    """
+
+    def _getTargetClass(self):
+        """
+        Define this to return the implementation in use,
+        without the 'Py' or 'Fallback' suffix.
+        """
+        raise NotImplementedError
+
+    def _getFallbackClass(self):
+        """
+        Define this to return the fallback Python implementation.
+        """
+        # Is there an algorithmic way to do this? The C
+        # objects all come from the same module so I don't see how we can
+        # get the Python object from that.
+        raise NotImplementedError
+
+    def test_optimizations(self):
+        used = self._getTargetClass()
+        fallback = self._getFallbackClass()
+
+        if _should_attempt_c_optimizations():
+            self.assertIsNot(used, fallback)
+        else:
+            self.assertIs(used, fallback)
+
+
+class MissingSomeAttrs:
+    """
+    Helper for tests that raises a specific exception
+    for attributes that are missing. This is usually not
+    an AttributeError, and this object is used to test that
+    those errors are not improperly caught and treated like
+    an AttributeError.
+    """
+
+    def __init__(self, exc_kind, **other_attrs):
+        self.__exc_kind = exc_kind
+        d = object.__getattribute__(self, '__dict__')
+        d.update(other_attrs)
+
+    def __getattribute__(self, name):
+        # Note that we ignore objects found in the class dictionary.
+        d = object.__getattribute__(self, '__dict__')
+        try:
+            return d[name]
+        except KeyError:
+            raise d['_MissingSomeAttrs__exc_kind'](name)
+
+    EXCEPTION_CLASSES = (
+        TypeError,
+        RuntimeError,
+        BaseException,
+        ValueError,
+    )
+
+    @classmethod
+    def test_raises(cls, unittest, test_func, expected_missing, **other_attrs):
+        """
+        Loop through various exceptions, calling *test_func* inside a ``assertRaises`` block.
+
+        :param test_func: A callable of one argument, the instance of this
+            class.
+        :param str expected_missing: The attribute that should fail with the exception.
+           This is used to ensure that we're testing the path we think we are.
+        :param other_attrs: Attributes that should be provided on the test object.
+           Must not contain *expected_missing*.
+        """
+        assert isinstance(expected_missing, str)
+        assert expected_missing not in other_attrs
+        for exc in cls.EXCEPTION_CLASSES:
+            ob = cls(exc, **other_attrs)
+            with unittest.assertRaises(exc) as ex:
+                test_func(ob)
+
+            unittest.assertEqual(ex.exception.args[0], expected_missing)
+
+        # Now test that the AttributeError for that expected_missing is *not* raised.
+        ob = cls(AttributeError, **other_attrs)
+        try:
+            test_func(ob)
+        except AttributeError as e:
+            unittest.assertNotIn(expected_missing, str(e))
+        except Exception: # pylint:disable=broad-except
+            pass
+
+# Be sure cleanup functionality is available; classes that use the adapter hook
+# need to be sure to subclass ``CleanUp``.
+#
+# If zope.component is installed and imported when we run our tests
+# (import chain:
+# zope.testrunner->zope.security->zope.location->zope.component.api)
+# it adds an adapter hook that uses its global site manager. That can cause
+# leakage from one test to another unless its cleanup hooks are run. The symptoms can
+# be odd, especially if one test used C objects and the next used the Python
+# implementation. (For example, you can get strange TypeErrors or find inexplicable
+# comparisons being done.)
+try:
+    from zope.testing import cleanup
+except ImportError:
+    class CleanUp:
+        def cleanUp(self):
+            pass
+
+        setUp = tearDown = cleanUp
+else:
+    CleanUp = cleanup.CleanUp

venv/lib/python3.11/site-packages/zope/interface/tests/advisory_testing.py

@@ -0,0 +1,26 @@
+##############################################################################
+#
+# Copyright (c) 2003 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+import sys
+
+from zope.interface.advice import getFrameInfo
+
+my_globals = globals()
+
+ClassicClass = None
+
+class NewStyleClass:
+    __metaclass__ = type
+    classLevelFrameInfo = getFrameInfo(sys._getframe())
+
+moduleLevelFrameInfo = getFrameInfo(sys._getframe())

venv/lib/python3.11/site-packages/zope/interface/tests/dummy.py

@@ -0,0 +1,23 @@
+##############################################################################
+#
+# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+""" Dummy Module
+"""
+from zope.interface import moduleProvides
+from zope.interface.tests.idummy import IDummyModule
+
+moduleProvides(IDummyModule)
+
+def bar(baz):
+    # Note:  no 'self', because the module provides the interface directly.
+    raise NotImplementedError()

venv/lib/python3.11/site-packages/zope/interface/tests/idummy.py

@@ -0,0 +1,23 @@
+##############################################################################
+#
+# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+""" Interface describing API of zope.interface.tests.dummy test module
+"""
+from zope.interface import Interface
+
+class IDummyModule(Interface):
+    """ Dummy interface for unit tests.
+    """
+    def bar(baz):
+        """ Just a note.
+        """

venv/lib/python3.11/site-packages/zope/interface/tests/m1.py

@@ -0,0 +1,21 @@
+##############################################################################
+#
+# Copyright (c) 2004 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Test module that declares an interface
+"""
+from zope.interface import Interface, moduleProvides
+
+class I1(Interface): pass
+class I2(Interface): pass
+
+moduleProvides(I1, I2)

venv/lib/python3.11/site-packages/zope/interface/tests/odd.py

@@ -0,0 +1,124 @@
+##############################################################################
+#
+# Copyright (c) 2003 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Odd meta class that doesn't subclass type.
+
+This is used for testing support for ExtensionClass in new interfaces.
+
+  >>> class A(object):
+  ...     __metaclass__ = MetaClass
+  ...     a = 1
+  ...
+  >>> A.__name__
+  'A'
+  >>> A.__bases__ == (object,)
+  True
+  >>> class B(object):
+  ...     __metaclass__ = MetaClass
+  ...     b = 1
+  ...
+  >>> class C(A, B): pass
+  ...
+  >>> C.__name__
+  'C'
+  >>> int(C.__bases__ == (A, B))
+  1
+  >>> a = A()
+  >>> aa = A()
+  >>> a.a
+  1
+  >>> aa.a
+  1
+  >>> aa.a = 2
+  >>> a.a
+  1
+  >>> aa.a
+  2
+  >>> c = C()
+  >>> c.a
+  1
+  >>> c.b
+  1
+  >>> c.b = 2
+  >>> c.b
+  2
+  >>> C.c = 1
+  >>> c.c
+  1
+
+  >>> int(C.__class__.__class__ is C.__class__)
+  1
+"""
+
+# class OddClass is an odd meta class
+
+class MetaMetaClass(type):
+
+    def __getattribute__(cls, name):
+        if name == '__class__':
+            return cls
+        # Under Python 3.6, __prepare__ gets requested
+        return type.__getattribute__(cls, name)
+
+
+class MetaClass:
+    """Odd classes
+    """
+
+    def __init__(self, name, bases, dict):
+        self.__name__ = name
+        self.__bases__ = bases
+        self.__dict__.update(dict)
+
+    def __call__(self):
+        return OddInstance(self)
+
+    def __getattr__(self, name):
+        for b in self.__bases__:
+            v = getattr(b, name, self)
+            if v is not self:
+                return v
+        raise AttributeError(name)
+
+    def __repr__(self): # pragma: no cover
+        return "<odd class {} at {}>".format(self.__name__, hex(id(self)))
+
+
+MetaClass = MetaMetaClass('MetaClass',
+                          MetaClass.__bases__,
+                          {k: v for k, v in MetaClass.__dict__.items()
+                          if k not in ('__dict__',)})
+
+class OddInstance:
+
+    def __init__(self, cls):
+        self.__dict__['__class__'] = cls
+
+    def __getattribute__(self, name):
+        dict = object.__getattribute__(self, '__dict__')
+        if name == '__dict__':
+            return dict
+        v = dict.get(name, self)
+        if v is not self:
+            return v
+        return getattr(dict['__class__'], name)
+
+    def __setattr__(self, name, v):
+        self.__dict__[name] = v
+
+    def __delattr__(self, name):
+        raise NotImplementedError()
+
+    def __repr__(self): # pragma: no cover
+        return "<odd {} instance at {}>".format(
+            self.__class__.__name__, hex(id(self)))

venv/lib/python3.11/site-packages/zope/interface/tests/test_advice.py

@@ -0,0 +1,191 @@
+##############################################################################
+#
+# Copyright (c) 2003 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Tests for advice
+
+This module was adapted from 'protocols.tests.advice', part of the Python
+Enterprise Application Kit (PEAK).  Please notify the PEAK authors
+(pje@telecommunity.com and tsarna@sarna.org) if bugs are found or
+Zope-specific changes are required, so that the PEAK version of this module
+can be kept in sync.
+
+PEAK is a Python application framework that interoperates with (but does
+not require) Zope 3 and Twisted.  It provides tools for manipulating UML
+models, object-relational persistence, aspect-oriented programming, and more.
+Visit the PEAK home page at http://peak.telecommunity.com for more information.
+"""
+
+import unittest
+import sys
+
+
+class FrameInfoTest(unittest.TestCase):
+
+    def test_w_module(self):
+        from zope.interface.tests import advisory_testing
+        (kind, module,
+         f_locals, f_globals) = advisory_testing.moduleLevelFrameInfo
+        self.assertEqual(kind, "module")
+        for d in module.__dict__, f_locals, f_globals:
+            self.assertTrue(d is advisory_testing.my_globals)
+
+    def test_w_class(self):
+        from zope.interface.tests import advisory_testing
+        (kind,
+         module,
+         f_locals,
+         f_globals) = advisory_testing.NewStyleClass.classLevelFrameInfo
+        self.assertEqual(kind, "class")
+
+        for d in module.__dict__, f_globals:
+            self.assertTrue(d is advisory_testing.my_globals)
+
+    def test_inside_function_call(self):
+        from zope.interface.advice import getFrameInfo
+        kind, module, f_locals, f_globals = getFrameInfo(sys._getframe())
+        self.assertEqual(kind, "function call")
+        self.assertTrue(f_locals is locals()) # ???
+        for d in module.__dict__, f_globals:
+            self.assertTrue(d is globals())
+
+    def test_inside_exec(self):
+        from zope.interface.advice import getFrameInfo
+        _globals = {'getFrameInfo': getFrameInfo}
+        _locals = {}
+        exec(_FUNKY_EXEC, _globals, _locals)
+        self.assertEqual(_locals['kind'], "exec")
+        self.assertTrue(_locals['f_locals'] is _locals)
+        self.assertTrue(_locals['module'] is None)
+        self.assertTrue(_locals['f_globals'] is _globals)
+
+
+_FUNKY_EXEC = """\
+import sys
+kind, module, f_locals, f_globals = getFrameInfo(sys._getframe())
+"""
+
+class Test_isClassAdvisor(unittest.TestCase):
+
+    def _callFUT(self, *args, **kw):
+        from zope.interface.advice import isClassAdvisor
+        return isClassAdvisor(*args, **kw)
+
+    def test_w_non_function(self):
+        self.assertEqual(self._callFUT(self), False)
+
+    def test_w_normal_function(self):
+        def foo():
+            raise NotImplementedError()
+        self.assertEqual(self._callFUT(foo), False)
+
+    def test_w_advisor_function(self):
+        def bar():
+            raise NotImplementedError()
+        bar.previousMetaclass = object()
+        self.assertEqual(self._callFUT(bar), True)
+
+
+class Test_determineMetaclass(unittest.TestCase):
+
+    def _callFUT(self, *args, **kw):
+        from zope.interface.advice import determineMetaclass
+        return determineMetaclass(*args, **kw)
+
+    def test_empty_w_explicit_metatype(self):
+        class Meta(type):
+            pass
+        self.assertEqual(self._callFUT((), Meta), Meta)
+
+    def test_single(self):
+        class Meta(type):
+            pass
+        self.assertEqual(self._callFUT((Meta,)), type)
+
+    def test_meta_of_class(self):
+        class Metameta(type):
+            pass
+        class Meta(type, metaclass=Metameta):
+            pass
+
+        self.assertEqual(self._callFUT((Meta, type)), Metameta)
+
+    def test_multiple_in_hierarchy_py3k(self):
+        class Meta_A(type):
+            pass
+
+        class Meta_B(Meta_A):
+            pass
+
+        class A(type, metaclass=Meta_A):
+            pass
+
+        class B(type, metaclass=Meta_B):
+            pass
+
+        self.assertEqual(self._callFUT((A, B)), Meta_B)
+
+
+    def test_multiple_not_in_hierarchy_py3k(self):
+        class Meta_A(type):
+            pass
+
+        class Meta_B(type):
+            pass
+
+        class A(type, metaclass=Meta_A):
+            pass
+
+        class B(type, metaclass=Meta_B):
+            pass
+
+        self.assertRaises(TypeError, self._callFUT, (A, B))
+
+
+class Test_minimalBases(unittest.TestCase):
+
+    def _callFUT(self, klasses):
+        from zope.interface.advice import minimalBases
+        return minimalBases(klasses)
+
+    def test_empty(self):
+        self.assertEqual(self._callFUT([]), [])
+
+    def test_w_newstyle_meta(self):
+        self.assertEqual(self._callFUT([type]), [type])
+
+    def test_w_newstyle_class(self):
+        class C:
+            pass
+        self.assertEqual(self._callFUT([C]), [C])
+
+    def test_simple_hierarchy_skips_implied(self):
+        class A:
+            pass
+        class B(A):
+            pass
+        class C(B):
+            pass
+        class D:
+            pass
+        self.assertEqual(self._callFUT([A, B, C]), [C])
+        self.assertEqual(self._callFUT([A, C]), [C])
+        self.assertEqual(self._callFUT([B, C]), [C])
+        self.assertEqual(self._callFUT([A, B]), [B])
+        self.assertEqual(self._callFUT([D, B, D]), [B, D])
+
+    def test_repeats_kicked_to_end_of_queue(self):
+        class A:
+            pass
+        class B:
+            pass
+        self.assertEqual(self._callFUT([A, B, A]), [B, A])

venv/lib/python3.11/site-packages/zope/interface/tests/test_compile_flags.py

@@ -0,0 +1,29 @@
+##############################################################################
+#
+# Copyright (c) 2022 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE
+#
+##############################################################################
+import struct
+import unittest
+
+import zope.interface  # noqa: try to load a C module for side effects
+
+
+class TestFloatingPoint(unittest.TestCase):
+
+    def test_no_fast_math_optimization(self):
+        # Building with -Ofast enables -ffast-math, which sets certain FPU
+        # flags that can cause breakage elsewhere.  A library such as BTrees
+        # has no business changing global FPU flags for the entire process.
+        zero_bits = struct.unpack("!Q", struct.pack("!d", 0.0))[0]
+        next_up = zero_bits + 1
+        smallest_subnormal = struct.unpack("!d", struct.pack("!Q", next_up))[0]
+        self.assertNotEqual(smallest_subnormal, 0.0)

venv/lib/python3.11/site-packages/zope/interface/tests/test_document.py

@@ -0,0 +1,505 @@
+##############################################################################
+#
+# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Documentation tests.
+"""
+import unittest
+
+
+class Test_asStructuredText(unittest.TestCase):
+
+    def _callFUT(self, iface):
+        from zope.interface.document import asStructuredText
+        return asStructuredText(iface)
+
+    def test_asStructuredText_no_docstring(self):
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "INoDocstring",
+            " Attributes:",
+            " Methods:",
+            ""
+        ])
+        class INoDocstring(Interface):
+            pass
+        self.assertEqual(self._callFUT(INoDocstring), EXPECTED)
+
+    def test_asStructuredText_empty_with_docstring(self):
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "IEmpty",
+            " This is an empty interface.",
+            " Attributes:",
+            " Methods:",
+            ""
+        ])
+        class IEmpty(Interface):
+            """ This is an empty interface.
+            """
+        self.assertEqual(self._callFUT(IEmpty), EXPECTED)
+
+    def test_asStructuredText_empty_with_multiline_docstring(self):
+        from zope.interface import Interface
+        EXPECTED = '\n'.join([
+            "IEmpty",
+            "",
+            " This is an empty interface.",
+            " ",
+            ("             It can be used to annotate any class or object, "
+                             "because it promises"),
+            "             nothing.",
+            "",
+            " Attributes:",
+            "",
+            " Methods:",
+            "",
+            ""
+        ])
+        class IEmpty(Interface):
+            """ This is an empty interface.
+
+            It can be used to annotate any class or object, because it promises
+            nothing.
+            """
+        self.assertEqual(self._callFUT(IEmpty), EXPECTED)
+
+    def test_asStructuredText_with_attribute_no_docstring(self):
+        from zope.interface import Attribute
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "IHasAttribute",
+            " This interface has an attribute.",
+            " Attributes:",
+            "  an_attribute -- no documentation",
+            " Methods:",
+            ""
+        ])
+        class IHasAttribute(Interface):
+            """ This interface has an attribute.
+            """
+            an_attribute = Attribute('an_attribute')
+
+        self.assertEqual(self._callFUT(IHasAttribute), EXPECTED)
+
+    def test_asStructuredText_with_attribute_with_docstring(self):
+        from zope.interface import Attribute
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "IHasAttribute",
+            " This interface has an attribute.",
+            " Attributes:",
+            "  an_attribute -- This attribute is documented.",
+            " Methods:",
+            ""
+        ])
+        class IHasAttribute(Interface):
+            """ This interface has an attribute.
+            """
+            an_attribute = Attribute('an_attribute',
+                                     'This attribute is documented.')
+
+        self.assertEqual(self._callFUT(IHasAttribute), EXPECTED)
+
+    def test_asStructuredText_with_method_no_args_no_docstring(self):
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "IHasMethod",
+            " This interface has a method.",
+            " Attributes:",
+            " Methods:",
+            "  aMethod() -- no documentation",
+            ""
+        ])
+        class IHasMethod(Interface):
+            """ This interface has a method.
+            """
+            def aMethod():
+                pass  # pragma: no cover
+
+        self.assertEqual(self._callFUT(IHasMethod), EXPECTED)
+
+    def test_asStructuredText_with_method_positional_args_no_docstring(self):
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "IHasMethod",
+            " This interface has a method.",
+            " Attributes:",
+            " Methods:",
+            "  aMethod(first, second) -- no documentation",
+            ""
+        ])
+        class IHasMethod(Interface):
+            """ This interface has a method.
+            """
+            def aMethod(first, second):
+                pass  # pragma: no cover
+
+        self.assertEqual(self._callFUT(IHasMethod), EXPECTED)
+
+    def test_asStructuredText_with_method_starargs_no_docstring(self):
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "IHasMethod",
+            " This interface has a method.",
+            " Attributes:",
+            " Methods:",
+            "  aMethod(first, second, *rest) -- no documentation",
+            ""
+        ])
+        class IHasMethod(Interface):
+            """ This interface has a method.
+            """
+            def aMethod(first, second, *rest):
+                pass  # pragma: no cover
+
+        self.assertEqual(self._callFUT(IHasMethod), EXPECTED)
+
+    def test_asStructuredText_with_method_kwargs_no_docstring(self):
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "IHasMethod",
+            " This interface has a method.",
+            " Attributes:",
+            " Methods:",
+            "  aMethod(first, second, **kw) -- no documentation",
+            ""
+        ])
+        class IHasMethod(Interface):
+            """ This interface has a method.
+            """
+            def aMethod(first, second, **kw):
+                pass  # pragma: no cover
+
+        self.assertEqual(self._callFUT(IHasMethod), EXPECTED)
+
+    def test_asStructuredText_with_method_with_docstring(self):
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "IHasMethod",
+            " This interface has a method.",
+            " Attributes:",
+            " Methods:",
+            "  aMethod() -- This method is documented.",
+            ""
+        ])
+        class IHasMethod(Interface):
+            """ This interface has a method.
+            """
+            def aMethod():
+                """This method is documented.
+                """
+
+        self.assertEqual(self._callFUT(IHasMethod), EXPECTED)
+
+    def test_asStructuredText_derived_ignores_base(self):
+        from zope.interface import Attribute
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "IDerived",
+            " IDerived doc",
+            " This interface extends:",
+            "  o IBase",
+            " Attributes:",
+            "  attr1 -- no documentation",
+            "  attr2 -- attr2 doc",
+            " Methods:",
+            "  method3() -- method3 doc",
+            "  method4() -- no documentation",
+            "  method5() -- method5 doc",
+            "",
+        ])
+
+        class IBase(Interface):
+            def method1():
+                """docstring"""
+            def method2():
+                """docstring"""
+
+        class IDerived(IBase):
+            "IDerived doc"
+            attr1 = Attribute('attr1')
+            attr2 = Attribute('attr2', 'attr2 doc')
+
+            def method3():
+                "method3 doc"
+            def method4():
+                pass  # pragma: no cover
+            def method5():
+                "method5 doc"
+
+        self.assertEqual(self._callFUT(IDerived), EXPECTED)
+
+
+class Test_asReStructuredText(unittest.TestCase):
+
+    def _callFUT(self, iface):
+        from zope.interface.document import asReStructuredText
+        return asReStructuredText(iface)
+
+    def test_asReStructuredText_no_docstring(self):
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "``INoDocstring``",
+            " Attributes:",
+            " Methods:",
+            ""
+        ])
+        class INoDocstring(Interface):
+            pass
+        self.assertEqual(self._callFUT(INoDocstring), EXPECTED)
+
+    def test_asReStructuredText_empty_with_docstring(self):
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "``IEmpty``",
+            " This is an empty interface.",
+            " Attributes:",
+            " Methods:",
+            ""
+        ])
+        class IEmpty(Interface):
+            """ This is an empty interface.
+            """
+        self.assertEqual(self._callFUT(IEmpty), EXPECTED)
+
+    def test_asReStructuredText_empty_with_multiline_docstring(self):
+        from zope.interface import Interface
+        EXPECTED = '\n'.join([
+            "``IEmpty``",
+            "",
+            " This is an empty interface.",
+            " ",
+            ("             It can be used to annotate any class or object, "
+                             "because it promises"),
+            "             nothing.",
+            "",
+            " Attributes:",
+            "",
+            " Methods:",
+            "",
+            ""
+        ])
+        class IEmpty(Interface):
+            """ This is an empty interface.
+
+            It can be used to annotate any class or object, because it promises
+            nothing.
+            """
+        self.assertEqual(self._callFUT(IEmpty), EXPECTED)
+
+    def test_asReStructuredText_with_attribute_no_docstring(self):
+        from zope.interface import Attribute
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "``IHasAttribute``",
+            " This interface has an attribute.",
+            " Attributes:",
+            "  ``an_attribute`` -- no documentation",
+            " Methods:",
+            ""
+        ])
+        class IHasAttribute(Interface):
+            """ This interface has an attribute.
+            """
+            an_attribute = Attribute('an_attribute')
+
+        self.assertEqual(self._callFUT(IHasAttribute), EXPECTED)
+
+    def test_asReStructuredText_with_attribute_with_docstring(self):
+        from zope.interface import Attribute
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "``IHasAttribute``",
+            " This interface has an attribute.",
+            " Attributes:",
+            "  ``an_attribute`` -- This attribute is documented.",
+            " Methods:",
+            ""
+        ])
+        class IHasAttribute(Interface):
+            """ This interface has an attribute.
+            """
+            an_attribute = Attribute('an_attribute',
+                                     'This attribute is documented.')
+
+        self.assertEqual(self._callFUT(IHasAttribute), EXPECTED)
+
+    def test_asReStructuredText_with_method_no_args_no_docstring(self):
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "``IHasMethod``",
+            " This interface has a method.",
+            " Attributes:",
+            " Methods:",
+            "  ``aMethod()`` -- no documentation",
+            ""
+        ])
+        class IHasMethod(Interface):
+            """ This interface has a method.
+            """
+            def aMethod():
+                pass  # pragma: no cover
+
+        self.assertEqual(self._callFUT(IHasMethod), EXPECTED)
+
+    def test_asReStructuredText_with_method_positional_args_no_docstring(self):
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "``IHasMethod``",
+            " This interface has a method.",
+            " Attributes:",
+            " Methods:",
+            "  ``aMethod(first, second)`` -- no documentation",
+            ""
+        ])
+        class IHasMethod(Interface):
+            """ This interface has a method.
+            """
+            def aMethod(first, second):
+                pass  # pragma: no cover
+
+        self.assertEqual(self._callFUT(IHasMethod), EXPECTED)
+
+    def test_asReStructuredText_with_method_starargs_no_docstring(self):
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "``IHasMethod``",
+            " This interface has a method.",
+            " Attributes:",
+            " Methods:",
+            "  ``aMethod(first, second, *rest)`` -- no documentation",
+            ""
+        ])
+        class IHasMethod(Interface):
+            """ This interface has a method.
+            """
+            def aMethod(first, second, *rest):
+                pass  # pragma: no cover
+
+        self.assertEqual(self._callFUT(IHasMethod), EXPECTED)
+
+    def test_asReStructuredText_with_method_kwargs_no_docstring(self):
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "``IHasMethod``",
+            " This interface has a method.",
+            " Attributes:",
+            " Methods:",
+            "  ``aMethod(first, second, **kw)`` -- no documentation",
+            ""
+        ])
+        class IHasMethod(Interface):
+            """ This interface has a method.
+            """
+            def aMethod(first, second, **kw):
+                pass  # pragma: no cover
+
+        self.assertEqual(self._callFUT(IHasMethod), EXPECTED)
+
+    def test_asReStructuredText_with_method_with_docstring(self):
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "``IHasMethod``",
+            " This interface has a method.",
+            " Attributes:",
+            " Methods:",
+            "  ``aMethod()`` -- This method is documented.",
+            ""
+        ])
+        class IHasMethod(Interface):
+            """ This interface has a method.
+            """
+            def aMethod():
+                """This method is documented.
+                """
+
+        self.assertEqual(self._callFUT(IHasMethod), EXPECTED)
+
+    def test_asReStructuredText_derived_ignores_base(self):
+        from zope.interface import Attribute
+        from zope.interface import Interface
+        EXPECTED = '\n\n'.join([
+            "``IDerived``",
+            " IDerived doc",
+            " This interface extends:",
+            "  o ``IBase``",
+            " Attributes:",
+            "  ``attr1`` -- no documentation",
+            "  ``attr2`` -- attr2 doc",
+            " Methods:",
+            "  ``method3()`` -- method3 doc",
+            "  ``method4()`` -- no documentation",
+            "  ``method5()`` -- method5 doc",
+            "",
+        ])
+
+        class IBase(Interface):
+            def method1():
+                pass  # pragma: no cover
+            def method2():
+                pass  # pragma: no cover
+
+        class IDerived(IBase):
+            "IDerived doc"
+            attr1 = Attribute('attr1')
+            attr2 = Attribute('attr2', 'attr2 doc')
+
+            def method3():
+                "method3 doc"
+            def method4():
+                pass  # pragma: no cover
+            def method5():
+                "method5 doc"
+
+        self.assertEqual(self._callFUT(IDerived), EXPECTED)
+
+
+class Test__justify_and_indent(unittest.TestCase):
+
+    def _callFUT(self, text, level, **kw):
+        from zope.interface.document import _justify_and_indent
+        return _justify_and_indent(text, level, **kw)
+
+    def test_simple_level_0(self):
+        LINES = ['Three blind mice', 'See how they run']
+        text = '\n'.join(LINES)
+        self.assertEqual(self._callFUT(text, 0), text)
+
+    def test_simple_level_1(self):
+        LINES = ['Three blind mice', 'See how they run']
+        text = '\n'.join(LINES)
+        self.assertEqual(self._callFUT(text, 1),
+                         '\n'.join([' ' + line for line in LINES]))
+
+    def test_simple_level_2(self):
+        LINES = ['Three blind mice', 'See how they run']
+        text = '\n'.join(LINES)
+        self.assertEqual(self._callFUT(text, 1),
+                         '\n'.join([' ' + line for line in LINES]))
+
+    def test_simple_w_CRLF(self):
+        LINES = ['Three blind mice', 'See how they run']
+        text = '\r\n'.join(LINES)
+        self.assertEqual(self._callFUT(text, 1),
+                         '\n'.join([' ' + line for line in LINES]))
+
+    def test_with_munge(self):
+        TEXT = ("This is a piece of text longer than 15 characters, \n"
+                "and split across multiple lines.")
+        EXPECTED = ("  This is a piece\n"
+                    "  of text longer\n"
+                    "  than 15 characters,\n"
+                    "  and split across\n"
+                    "  multiple lines.\n"
+                    " ")
+        self.assertEqual(self._callFUT(TEXT, 1, munge=1, width=15), EXPECTED)

venv/lib/python3.11/site-packages/zope/interface/tests/test_element.py

@@ -0,0 +1,31 @@
+##############################################################################
+#
+# Copyright (c) 2003 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Test Element meta-class.
+"""
+
+import unittest
+from zope.interface.interface import Element
+
+class TestElement(unittest.TestCase):
+
+    def test_taggedValues(self):
+        """Test that we can update tagged values of more than one element
+        """
+
+        e1 = Element("foo")
+        e2 = Element("bar")
+        e1.setTaggedValue("x", 1)
+        e2.setTaggedValue("x", 2)
+        self.assertEqual(e1.getTaggedValue("x"), 1)
+        self.assertEqual(e2.getTaggedValue("x"), 2)

venv/lib/python3.11/site-packages/zope/interface/tests/test_exceptions.py

@@ -0,0 +1,184 @@
+##############################################################################
+#
+# Copyright (c) 2010 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+""" zope.interface.exceptions unit tests
+"""
+import unittest
+
+def _makeIface():
+    from zope.interface import Interface
+    class IDummy(Interface):
+        pass
+    return IDummy
+
+class DoesNotImplementTests(unittest.TestCase):
+
+    def _getTargetClass(self):
+        from zope.interface.exceptions import DoesNotImplement
+        return DoesNotImplement
+
+    def _makeOne(self, *args):
+        iface = _makeIface()
+        return self._getTargetClass()(iface, *args)
+
+    def test___str__(self):
+        dni = self._makeOne()
+        self.assertEqual(
+            str(dni),
+            "An object has failed to implement interface "
+            "zope.interface.tests.test_exceptions.IDummy: "
+            "Does not declaratively implement the interface."
+        )
+
+    def test___str__w_candidate(self):
+        dni = self._makeOne('candidate')
+        self.assertEqual(
+            str(dni),
+            "The object 'candidate' has failed to implement interface "
+            "zope.interface.tests.test_exceptions.IDummy: "
+            "Does not declaratively implement the interface."
+        )
+
+
+class BrokenImplementationTests(unittest.TestCase):
+
+    def _getTargetClass(self):
+        from zope.interface.exceptions import BrokenImplementation
+        return BrokenImplementation
+
+    def _makeOne(self, *args):
+        iface = _makeIface()
+        return self._getTargetClass()(iface, 'missing', *args)
+
+    def test___str__(self):
+        dni = self._makeOne()
+        self.assertEqual(
+            str(dni),
+            'An object has failed to implement interface '
+            'zope.interface.tests.test_exceptions.IDummy: '
+            "The 'missing' attribute was not provided.")
+
+    def test___str__w_candidate(self):
+        dni = self._makeOne('candidate')
+        self.assertEqual(
+            str(dni),
+            'The object \'candidate\' has failed to implement interface '
+            'zope.interface.tests.test_exceptions.IDummy: '
+            "The 'missing' attribute was not provided.")
+
+
+def broken_function():
+    """
+    This is a global function with a simple argument list.
+
+    It exists to be able to report the same information when
+    formatting signatures.
+    """
+
+
+class BrokenMethodImplementationTests(unittest.TestCase):
+
+    def _getTargetClass(self):
+        from zope.interface.exceptions import BrokenMethodImplementation
+        return BrokenMethodImplementation
+
+    message = 'I said so'
+
+    def _makeOne(self, *args):
+        return self._getTargetClass()('aMethod', self.message, *args)
+
+    def test___str__(self):
+        dni = self._makeOne()
+        self.assertEqual(
+            str(dni),
+            "An object has failed to implement interface <Unknown>: "
+            "The contract of 'aMethod' is violated because I said so."
+        )
+
+    def test___str__w_candidate_no_implementation(self):
+        dni = self._makeOne('some_function', '<IFoo>', 'candidate')
+        self.assertEqual(
+            str(dni),
+            "The object 'candidate' has failed to implement interface <IFoo>: "
+            "The contract of 'aMethod' is violated because I said so."
+        )
+
+    def test___str__w_candidate_w_implementation(self):
+        self.message = 'implementation is wonky'
+        dni = self._makeOne(broken_function, '<IFoo>', 'candidate')
+        self.assertEqual(
+            str(dni),
+            "The object 'candidate' has failed to implement interface <IFoo>: "
+            "The contract of 'aMethod' is violated because "
+            "'broken_function()' is wonky."
+        )
+
+    def test___str__w_candidate_w_implementation_not_callable(self):
+        self.message = 'implementation is not callable'
+        dni = self._makeOne(42, '<IFoo>', 'candidate')
+        self.assertEqual(
+            str(dni),
+            "The object 'candidate' has failed to implement interface <IFoo>: "
+            "The contract of 'aMethod' is violated because "
+            "'42' is not callable."
+        )
+
+    def test___repr__w_candidate(self):
+        dni = self._makeOne(None, 'candidate')
+        self.assertEqual(
+            repr(dni),
+            "BrokenMethodImplementation('aMethod', 'I said so', None, 'candidate')"
+        )
+
+
+class MultipleInvalidTests(unittest.TestCase):
+
+    def _getTargetClass(self):
+        from zope.interface.exceptions import MultipleInvalid
+        return MultipleInvalid
+
+    def _makeOne(self, excs):
+        iface = _makeIface()
+        return self._getTargetClass()(iface, 'target', excs)
+
+    def test__str__(self):
+        from zope.interface.exceptions import BrokenMethodImplementation
+        excs = [
+            BrokenMethodImplementation('aMethod', 'I said so'),
+            Exception("Regular exception")
+        ]
+        dni = self._makeOne(excs)
+        self.assertEqual(
+            str(dni),
+            "The object 'target' has failed to implement interface "
+            "zope.interface.tests.test_exceptions.IDummy:\n"
+            "    The contract of 'aMethod' is violated because I said so\n"
+            "    Regular exception"
+        )
+
+    def test__repr__(self):
+        from zope.interface.exceptions import BrokenMethodImplementation
+        excs = [
+            BrokenMethodImplementation('aMethod', 'I said so'),
+            # Use multiple arguments to normalize repr; versions of Python
+            # prior to 3.7 add a trailing comma if there's just one.
+            Exception("Regular", "exception")
+        ]
+        dni = self._makeOne(excs)
+        self.assertEqual(
+            repr(dni),
+            "MultipleInvalid(<InterfaceClass zope.interface.tests.test_exceptions.IDummy>,"
+            " 'target',"
+            " (BrokenMethodImplementation('aMethod', 'I said so'),"
+            " Exception('Regular', 'exception')))"
+        )

venv/lib/python3.11/site-packages/zope/interface/tests/test_interfaces.py

@@ -0,0 +1,128 @@
+import unittest
+
+
+class _ConformsToIObjectEvent:
+
+    def _makeOne(self, target=None):
+        if target is None:
+            target = object()
+        return self._getTargetClass()(target)
+
+    def test_class_conforms_to_IObjectEvent(self):
+        from zope.interface.interfaces import IObjectEvent
+        from zope.interface.verify import verifyClass
+        verifyClass(IObjectEvent, self._getTargetClass())
+
+    def test_instance_conforms_to_IObjectEvent(self):
+        from zope.interface.interfaces import IObjectEvent
+        from zope.interface.verify import verifyObject
+        verifyObject(IObjectEvent, self._makeOne())
+
+
+class _ConformsToIRegistrationEvent(_ConformsToIObjectEvent):
+
+    def test_class_conforms_to_IRegistrationEvent(self):
+        from zope.interface.interfaces import IRegistrationEvent
+        from zope.interface.verify import verifyClass
+        verifyClass(IRegistrationEvent, self._getTargetClass())
+
+    def test_instance_conforms_to_IRegistrationEvent(self):
+        from zope.interface.interfaces import IRegistrationEvent
+        from zope.interface.verify import verifyObject
+        verifyObject(IRegistrationEvent, self._makeOne())
+
+
+class ObjectEventTests(unittest.TestCase, _ConformsToIObjectEvent):
+
+    def _getTargetClass(self):
+        from zope.interface.interfaces import ObjectEvent
+        return ObjectEvent
+
+    def test_ctor(self):
+        target = object()
+        event = self._makeOne(target)
+        self.assertTrue(event.object is target)
+
+
+class RegistrationEventTests(unittest.TestCase,
+                             _ConformsToIRegistrationEvent):
+
+    def _getTargetClass(self):
+        from zope.interface.interfaces import RegistrationEvent
+        return RegistrationEvent
+
+    def test___repr__(self):
+        target = object()
+        event = self._makeOne(target)
+        r = repr(event)
+        self.assertEqual(r.splitlines(),
+                         ['RegistrationEvent event:', repr(target)])
+
+
+class RegisteredTests(unittest.TestCase,
+                      _ConformsToIRegistrationEvent):
+
+    def _getTargetClass(self):
+        from zope.interface.interfaces import Registered
+        return Registered
+
+    def test_class_conforms_to_IRegistered(self):
+        from zope.interface.interfaces import IRegistered
+        from zope.interface.verify import verifyClass
+        verifyClass(IRegistered, self._getTargetClass())
+
+    def test_instance_conforms_to_IRegistered(self):
+        from zope.interface.interfaces import IRegistered
+        from zope.interface.verify import verifyObject
+        verifyObject(IRegistered, self._makeOne())
+
+
+class UnregisteredTests(unittest.TestCase,
+                        _ConformsToIRegistrationEvent):
+
+    def _getTargetClass(self):
+        from zope.interface.interfaces import Unregistered
+        return Unregistered
+
+    def test_class_conforms_to_IUnregistered(self):
+        from zope.interface.interfaces import IUnregistered
+        from zope.interface.verify import verifyClass
+        verifyClass(IUnregistered, self._getTargetClass())
+
+    def test_instance_conforms_to_IUnregistered(self):
+        from zope.interface.interfaces import IUnregistered
+        from zope.interface.verify import verifyObject
+        verifyObject(IUnregistered, self._makeOne())
+
+
+class InterfaceClassTests(unittest.TestCase):
+
+    def _getTargetClass(self):
+        from zope.interface.interface import InterfaceClass
+        return InterfaceClass
+
+    def _getTargetInterface(self):
+        from zope.interface.interfaces import IInterface
+        return IInterface
+
+    def _makeOne(self):
+        from zope.interface.interface import Interface
+        return Interface
+
+    def test_class_conforms(self):
+        from zope.interface.verify import verifyClass
+        verifyClass(self._getTargetInterface(), self._getTargetClass())
+
+    def test_instance_conforms(self):
+        from zope.interface.verify import verifyObject
+        verifyObject(self._getTargetInterface(), self._makeOne())
+
+    def test_instance_consistent__iro__(self):
+        from zope.interface import ro
+        self.assertTrue(ro.is_consistent(self._getTargetInterface()))
+
+    def test_class_consistent__iro__(self):
+        from zope.interface import ro
+        from zope.interface import implementedBy
+
+        self.assertTrue(ro.is_consistent(implementedBy(self._getTargetClass())))

venv/lib/python3.11/site-packages/zope/interface/tests/test_odd_declarations.py

@@ -0,0 +1,255 @@
+##############################################################################
+#
+# Copyright (c) 2003 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Test interface declarations against ExtensionClass-like classes.
+
+These tests are to make sure we do something sane in the presence of
+classic ExtensionClass classes and instances.
+"""
+import unittest
+
+from zope.interface.tests import odd
+from zope.interface import Interface
+from zope.interface import implementer
+from zope.interface import directlyProvides
+from zope.interface import providedBy
+from zope.interface import directlyProvidedBy
+from zope.interface import classImplements
+from zope.interface import classImplementsOnly
+from zope.interface import implementedBy
+
+class I1(Interface): pass
+class I2(Interface): pass
+class I3(Interface): pass
+class I31(I3): pass
+class I4(Interface): pass
+class I5(Interface): pass
+
+class Odd:
+    pass
+Odd = odd.MetaClass('Odd', Odd.__bases__, {})
+
+
+class B(Odd): __implemented__ = I2
+
+
+# TODO: We are going to need more magic to make classProvides work with odd
+#       classes. This will work in the next iteration. For now, we'll use
+#       a different mechanism.
+
+# from zope.interface import classProvides
+class A(Odd):
+    pass
+classImplements(A, I1)
+
+class C(A, B):
+    pass
+classImplements(C, I31)
+
+
+class Test(unittest.TestCase):
+
+    def test_ObjectSpecification(self):
+        c = C()
+        directlyProvides(c, I4)
+        self.assertEqual([i.getName() for i in providedBy(c)],
+                         ['I4', 'I31', 'I1', 'I2']
+                         )
+        self.assertEqual([i.getName() for i in providedBy(c).flattened()],
+                         ['I4', 'I31', 'I3', 'I1', 'I2', 'Interface']
+                         )
+        self.assertTrue(I1 in providedBy(c))
+        self.assertFalse(I3 in providedBy(c))
+        self.assertTrue(providedBy(c).extends(I3))
+        self.assertTrue(providedBy(c).extends(I31))
+        self.assertFalse(providedBy(c).extends(I5))
+
+        class COnly(A, B):
+            pass
+        classImplementsOnly(COnly, I31)
+
+        class D(COnly):
+            pass
+        classImplements(D, I5)
+
+        classImplements(D, I5)
+
+        c = D()
+        directlyProvides(c, I4)
+        self.assertEqual([i.getName() for i in providedBy(c)],
+                         ['I4', 'I5', 'I31'])
+        self.assertEqual([i.getName() for i in providedBy(c).flattened()],
+                         ['I4', 'I5', 'I31', 'I3', 'Interface'])
+        self.assertFalse(I1 in providedBy(c))
+        self.assertFalse(I3 in providedBy(c))
+        self.assertTrue(providedBy(c).extends(I3))
+        self.assertFalse(providedBy(c).extends(I1))
+        self.assertTrue(providedBy(c).extends(I31))
+        self.assertTrue(providedBy(c).extends(I5))
+
+        class COnly(A, B): __implemented__ = I31
+        class D(COnly):
+            pass
+        classImplements(D, I5)
+
+        classImplements(D, I5)
+        c = D()
+        directlyProvides(c, I4)
+        self.assertEqual([i.getName() for i in providedBy(c)],
+                         ['I4', 'I5', 'I31'])
+        self.assertEqual([i.getName() for i in providedBy(c).flattened()],
+                         ['I4', 'I5', 'I31', 'I3', 'Interface'])
+        self.assertFalse(I1 in providedBy(c))
+        self.assertFalse(I3 in providedBy(c))
+        self.assertTrue(providedBy(c).extends(I3))
+        self.assertFalse(providedBy(c).extends(I1))
+        self.assertTrue(providedBy(c).extends(I31))
+        self.assertTrue(providedBy(c).extends(I5))
+
+    def test_classImplements(self):
+
+        @implementer(I3)
+        class A(Odd):
+            pass
+
+        @implementer(I4)
+        class B(Odd):
+            pass
+
+        class C(A, B):
+            pass
+        classImplements(C, I1, I2)
+        self.assertEqual([i.getName() for i in implementedBy(C)],
+                         ['I1', 'I2', 'I3', 'I4'])
+        classImplements(C, I5)
+        self.assertEqual([i.getName() for i in implementedBy(C)],
+                         ['I1', 'I2', 'I5', 'I3', 'I4'])
+
+    def test_classImplementsOnly(self):
+        @implementer(I3)
+        class A(Odd):
+            pass
+
+        @implementer(I4)
+        class B(Odd):
+            pass
+
+        class C(A, B):
+            pass
+        classImplementsOnly(C, I1, I2)
+        self.assertEqual([i.__name__ for i in implementedBy(C)],
+                         ['I1', 'I2'])
+
+
+    def test_directlyProvides(self):
+        class IA1(Interface): pass
+        class IA2(Interface): pass
+        class IB(Interface): pass
+        class IC(Interface): pass
+        class A(Odd):
+            pass
+        classImplements(A, IA1, IA2)
+
+        class B(Odd):
+            pass
+        classImplements(B, IB)
+
+        class C(A, B):
+            pass
+        classImplements(C, IC)
+
+
+        ob = C()
+        directlyProvides(ob, I1, I2)
+        self.assertTrue(I1 in providedBy(ob))
+        self.assertTrue(I2 in providedBy(ob))
+        self.assertTrue(IA1 in providedBy(ob))
+        self.assertTrue(IA2 in providedBy(ob))
+        self.assertTrue(IB in providedBy(ob))
+        self.assertTrue(IC in providedBy(ob))
+
+        directlyProvides(ob, directlyProvidedBy(ob)-I2)
+        self.assertTrue(I1 in providedBy(ob))
+        self.assertFalse(I2 in providedBy(ob))
+        self.assertFalse(I2 in providedBy(ob))
+        directlyProvides(ob, directlyProvidedBy(ob), I2)
+        self.assertTrue(I2 in providedBy(ob))
+
+    # see above
+    #def TODO_test_classProvides_fails_for_odd_class(self):
+    #    try:
+    #        class A(Odd):
+    #            classProvides(I1)
+    #    except TypeError:
+    #        pass # Success
+    #    self.assert_(False,
+    #                 "Shouldn't be able to use directlyProvides on odd class."
+    #                 )
+
+    def test_implementedBy(self):
+        class I2(I1): pass
+
+        class C1(Odd):
+            pass
+        classImplements(C1, I2)
+
+        class C2(C1):
+            pass
+        classImplements(C2, I3)
+
+        self.assertEqual([i.getName() for i in implementedBy(C2)],
+                         ['I3', 'I2'])
+
+    def test_odd_metaclass_that_doesnt_subclass_type(self):
+        # This was originally a doctest in odd.py.
+        # It verifies that the metaclass the rest of these tests use
+        # works as expected.
+
+        # This is used for testing support for ExtensionClass in new interfaces.
+
+        class A:
+            a = 1
+
+        A = odd.MetaClass('A', A.__bases__, A.__dict__)
+
+        class B:
+            b = 1
+
+        B = odd.MetaClass('B', B.__bases__, B.__dict__)
+
+        class C(A, B):
+            pass
+
+        self.assertEqual(C.__bases__, (A, B))
+
+        a = A()
+        aa = A()
+        self.assertEqual(a.a, 1)
+        self.assertEqual(aa.a, 1)
+
+        aa.a = 2
+        self.assertEqual(a.a, 1)
+        self.assertEqual(aa.a, 2)
+
+        c = C()
+        self.assertEqual(c.a, 1)
+        self.assertEqual(c.b, 1)
+
+        c.b = 2
+        self.assertEqual(c.b, 2)
+
+        C.c = 1
+        self.assertEqual(c.c, 1)
+        c.c
+
+        self.assertIs(C.__class__.__class__, C.__class__)

venv/lib/python3.11/site-packages/zope/interface/tests/test_ro.py

@@ -0,0 +1,426 @@
+##############################################################################
+#
+# Copyright (c) 2014 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Resolution ordering utility tests"""
+import unittest
+
+# pylint:disable=blacklisted-name,protected-access,attribute-defined-outside-init
+
+class Test__mergeOrderings(unittest.TestCase):
+
+    def _callFUT(self, orderings):
+        from zope.interface.ro import _legacy_mergeOrderings
+        return _legacy_mergeOrderings(orderings)
+
+    def test_empty(self):
+        self.assertEqual(self._callFUT([]), [])
+
+    def test_single(self):
+        self.assertEqual(self._callFUT(['a', 'b', 'c']), ['a', 'b', 'c'])
+
+    def test_w_duplicates(self):
+        self.assertEqual(self._callFUT([['a'], ['b', 'a']]), ['b', 'a'])
+
+    def test_suffix_across_multiple_duplicates(self):
+        O1 = ['x', 'y', 'z']
+        O2 = ['q', 'z']
+        O3 = [1, 3, 5]
+        O4 = ['z']
+        self.assertEqual(self._callFUT([O1, O2, O3, O4]),
+                         ['x', 'y', 'q', 1, 3, 5, 'z'])
+
+
+class Test__flatten(unittest.TestCase):
+
+    def _callFUT(self, ob):
+        from zope.interface.ro import _legacy_flatten
+        return _legacy_flatten(ob)
+
+    def test_w_empty_bases(self):
+        class Foo:
+            pass
+        foo = Foo()
+        foo.__bases__ = ()
+        self.assertEqual(self._callFUT(foo), [foo])
+
+    def test_w_single_base(self):
+        class Foo:
+            pass
+        self.assertEqual(self._callFUT(Foo), [Foo, object])
+
+    def test_w_bases(self):
+        class Foo:
+            pass
+        class Bar(Foo):
+            pass
+        self.assertEqual(self._callFUT(Bar), [Bar, Foo, object])
+
+    def test_w_diamond(self):
+        class Foo:
+            pass
+        class Bar(Foo):
+            pass
+        class Baz(Foo):
+            pass
+        class Qux(Bar, Baz):
+            pass
+        self.assertEqual(self._callFUT(Qux),
+                         [Qux, Bar, Foo, object, Baz, Foo, object])
+
+
+class Test_ro(unittest.TestCase):
+    maxDiff = None
+    def _callFUT(self, ob, **kwargs):
+        from zope.interface.ro import _legacy_ro
+        return _legacy_ro(ob, **kwargs)
+
+    def test_w_empty_bases(self):
+        class Foo:
+            pass
+        foo = Foo()
+        foo.__bases__ = ()
+        self.assertEqual(self._callFUT(foo), [foo])
+
+    def test_w_single_base(self):
+        class Foo:
+            pass
+        self.assertEqual(self._callFUT(Foo), [Foo, object])
+
+    def test_w_bases(self):
+        class Foo:
+            pass
+        class Bar(Foo):
+            pass
+        self.assertEqual(self._callFUT(Bar), [Bar, Foo, object])
+
+    def test_w_diamond(self):
+        class Foo:
+            pass
+        class Bar(Foo):
+            pass
+        class Baz(Foo):
+            pass
+        class Qux(Bar, Baz):
+            pass
+        self.assertEqual(self._callFUT(Qux),
+                         [Qux, Bar, Baz, Foo, object])
+
+    def _make_IOErr(self):
+        # This can't be done in the standard C3 ordering.
+        class Foo:
+            def __init__(self, name, *bases):
+                self.__name__ = name
+                self.__bases__ = bases
+            def __repr__(self): # pragma: no cover
+                return self.__name__
+
+        # Mimic what classImplements(IOError, IIOError)
+        # does.
+        IEx = Foo('IEx')
+        IStdErr = Foo('IStdErr', IEx)
+        IEnvErr = Foo('IEnvErr', IStdErr)
+        IIOErr = Foo('IIOErr', IEnvErr)
+        IOSErr = Foo('IOSErr', IEnvErr)
+
+        IOErr = Foo('IOErr', IEnvErr, IIOErr, IOSErr)
+        return IOErr, [IOErr, IIOErr, IOSErr, IEnvErr, IStdErr, IEx]
+
+    def test_non_orderable(self):
+        IOErr, bases = self._make_IOErr()
+
+        self.assertEqual(self._callFUT(IOErr), bases)
+
+    def test_mixed_inheritance_and_implementation(self):
+        # https://github.com/zopefoundation/zope.interface/issues/8
+        # This test should fail, but doesn't, as described in that issue.
+        # pylint:disable=inherit-non-class
+        from zope.interface import implementer
+        from zope.interface import Interface
+        from zope.interface import providedBy
+        from zope.interface import implementedBy
+
+        class IFoo(Interface):
+            pass
+
+        @implementer(IFoo)
+        class ImplementsFoo:
+            pass
+
+        class ExtendsFoo(ImplementsFoo):
+            pass
+
+        class ImplementsNothing:
+            pass
+
+        class ExtendsFooImplementsNothing(ExtendsFoo, ImplementsNothing):
+            pass
+
+        self.assertEqual(
+            self._callFUT(providedBy(ExtendsFooImplementsNothing())),
+            [implementedBy(ExtendsFooImplementsNothing),
+             implementedBy(ExtendsFoo),
+             implementedBy(ImplementsFoo),
+             IFoo,
+             Interface,
+             implementedBy(ImplementsNothing),
+             implementedBy(object)])
+
+
+class C3Setting:
+
+    def __init__(self, setting, value):
+        self._setting = setting
+        self._value = value
+
+    def __enter__(self):
+        from zope.interface import ro
+        setattr(ro.C3, self._setting.__name__, self._value)
+
+    def __exit__(self, t, v, tb):
+        from zope.interface import ro
+        setattr(ro.C3, self._setting.__name__, self._setting)
+
+class Test_c3_ro(Test_ro):
+
+    def setUp(self):
+        Test_ro.setUp(self)
+        from zope.testing.loggingsupport import InstalledHandler
+        self.log_handler = handler = InstalledHandler('zope.interface.ro')
+        self.addCleanup(handler.uninstall)
+
+    def _callFUT(self, ob, **kwargs):
+        from zope.interface.ro import ro
+        return ro(ob, **kwargs)
+
+    def _make_complex_diamond(self, base):
+        # https://github.com/zopefoundation/zope.interface/issues/21
+        O = base
+        class F(O):
+            pass
+        class E(O):
+            pass
+        class D(O):
+            pass
+        class C(D, F):
+            pass
+        class B(D, E):
+            pass
+        class A(B, C):
+            pass
+
+        if hasattr(A, 'mro'):
+            self.assertEqual(A.mro(), self._callFUT(A))
+
+        return A
+
+    def test_complex_diamond_object(self):
+        self._make_complex_diamond(object)
+
+    def test_complex_diamond_interface(self):
+        from zope.interface import Interface
+
+        IA = self._make_complex_diamond(Interface)
+
+        self.assertEqual(
+            [x.__name__ for x in IA.__iro__],
+            ['A', 'B', 'C', 'D', 'E', 'F', 'Interface']
+        )
+
+    def test_complex_diamond_use_legacy_argument(self):
+        from zope.interface import Interface
+
+        A = self._make_complex_diamond(Interface)
+        legacy_A_iro = self._callFUT(A, use_legacy_ro=True)
+        self.assertNotEqual(A.__iro__, legacy_A_iro)
+
+        # And logging happened as a side-effect.
+        self._check_handler_complex_diamond()
+
+    def test_complex_diamond_compare_legacy_argument(self):
+        from zope.interface import Interface
+
+        A = self._make_complex_diamond(Interface)
+        computed_A_iro = self._callFUT(A, log_changed_ro=True)
+        # It matches, of course, but we did log a warning.
+        self.assertEqual(tuple(computed_A_iro), A.__iro__)
+        self._check_handler_complex_diamond()
+
+    def _check_handler_complex_diamond(self):
+        handler = self.log_handler
+        self.assertEqual(1, len(handler.records))
+        record = handler.records[0]
+
+        self.assertEqual('\n'.join(l.rstrip() for l in record.getMessage().splitlines()), """\
+Object <InterfaceClass zope.interface.tests.test_ro.A> has different legacy and C3 MROs:
+  Legacy RO (len=7)                 C3 RO (len=7; inconsistent=no)
+  ==================================================================
+    zope.interface.tests.test_ro.A    zope.interface.tests.test_ro.A
+    zope.interface.tests.test_ro.B    zope.interface.tests.test_ro.B
+  - zope.interface.tests.test_ro.E
+    zope.interface.tests.test_ro.C    zope.interface.tests.test_ro.C
+    zope.interface.tests.test_ro.D    zope.interface.tests.test_ro.D
+                                    + zope.interface.tests.test_ro.E
+    zope.interface.tests.test_ro.F    zope.interface.tests.test_ro.F
+    zope.interface.Interface          zope.interface.Interface""")
+
+    def test_ExtendedPathIndex_implement_thing_implementedby_super(self):
+        # See https://github.com/zopefoundation/zope.interface/pull/182#issuecomment-598754056
+        from zope.interface import ro
+        # pylint:disable=inherit-non-class
+        class _Based:
+            __bases__ = ()
+
+            def __init__(self, name, bases=(), attrs=None):
+                self.__name__ = name
+                self.__bases__ = bases
+
+            def __repr__(self):
+                return self.__name__
+
+        Interface = _Based('Interface', (), {})
+
+        class IPluggableIndex(Interface):
+            pass
+
+        class ILimitedResultIndex(IPluggableIndex):
+            pass
+
+        class IQueryIndex(IPluggableIndex):
+            pass
+
+        class IPathIndex(Interface):
+            pass
+
+        # A parent class who implements two distinct interfaces whose
+        # only common ancestor is Interface. An easy case.
+        # @implementer(IPathIndex, IQueryIndex)
+        # class PathIndex(object):
+        #     pass
+        obj = _Based('object')
+        PathIndex = _Based('PathIndex', (IPathIndex, IQueryIndex, obj))
+
+        # Child class that tries to put an interface the parent declares
+        # later ahead of the parent.
+        # @implementer(ILimitedResultIndex, IQueryIndex)
+        # class ExtendedPathIndex(PathIndex):
+        #     pass
+        ExtendedPathIndex = _Based('ExtendedPathIndex',
+                                   (ILimitedResultIndex, IQueryIndex, PathIndex))
+
+        # We were able to resolve it, and in exactly the same way as
+        # the legacy RO did, even though it is inconsistent.
+        result = self._callFUT(ExtendedPathIndex, log_changed_ro=True, strict=False)
+        self.assertEqual(result, [
+            ExtendedPathIndex,
+            ILimitedResultIndex,
+            PathIndex,
+            IPathIndex,
+            IQueryIndex,
+            IPluggableIndex,
+            Interface,
+            obj])
+
+        record, = self.log_handler.records
+        self.assertIn('used the legacy', record.getMessage())
+
+        with self.assertRaises(ro.InconsistentResolutionOrderError):
+            self._callFUT(ExtendedPathIndex, strict=True)
+
+    def test_OSError_IOError(self):
+        from zope.interface.common import interfaces
+        from zope.interface import providedBy
+
+        self.assertEqual(
+            list(providedBy(OSError()).flattened()),
+            [
+                interfaces.IOSError,
+                interfaces.IIOError,
+                interfaces.IEnvironmentError,
+                interfaces.IStandardError,
+                interfaces.IException,
+                interfaces.Interface,
+            ])
+
+    def test_non_orderable(self):
+        import warnings
+        from zope.interface import ro
+        try:
+            # If we've already warned, we must reset that state.
+            del ro.__warningregistry__
+        except AttributeError:
+            pass
+
+        with warnings.catch_warnings():
+            warnings.simplefilter('error')
+            with C3Setting(ro.C3.WARN_BAD_IRO, True), C3Setting(ro.C3.STRICT_IRO, False):
+                with self.assertRaises(ro.InconsistentResolutionOrderWarning):
+                    super().test_non_orderable()
+
+        IOErr, _ = self._make_IOErr()
+        with self.assertRaises(ro.InconsistentResolutionOrderError):
+            self._callFUT(IOErr, strict=True)
+
+        with C3Setting(ro.C3.TRACK_BAD_IRO, True), C3Setting(ro.C3.STRICT_IRO, False):
+            with warnings.catch_warnings():
+                warnings.simplefilter('ignore')
+                self._callFUT(IOErr)
+            self.assertIn(IOErr, ro.C3.BAD_IROS)
+
+        iro = self._callFUT(IOErr, strict=False)
+        legacy_iro = self._callFUT(IOErr, use_legacy_ro=True, strict=False)
+        self.assertEqual(iro, legacy_iro)
+
+
+class TestC3(unittest.TestCase):
+    def _makeOne(self, C, strict=False, base_mros=None):
+        from zope.interface.ro import C3
+        return C3.resolver(C, strict, base_mros)
+
+    def test_base_mros_given(self):
+        c3 = self._makeOne(type(self), base_mros={unittest.TestCase: unittest.TestCase.__mro__})
+        memo = c3.memo
+        self.assertIn(unittest.TestCase, memo)
+        # We used the StaticMRO class
+        self.assertIsNone(memo[unittest.TestCase].had_inconsistency)
+
+    def test_one_base_optimization(self):
+        c3 = self._makeOne(type(self))
+        # Even though we didn't call .mro() yet, the MRO has been
+        # computed.
+        self.assertIsNotNone(c3._C3__mro) # pylint:disable=no-member
+        c3._merge = None
+        self.assertEqual(c3.mro(), list(type(self).__mro__))
+
+
+class Test_ROComparison(unittest.TestCase):
+
+    class MockC3:
+        direct_inconsistency = False
+        bases_had_inconsistency = False
+
+    def _makeOne(self, c3=None, c3_ro=(), legacy_ro=()):
+        from zope.interface.ro import _ROComparison
+        return _ROComparison(c3 or self.MockC3(), c3_ro, legacy_ro)
+
+    def test_inconsistent_label(self):
+        comp = self._makeOne()
+        self.assertEqual('no', comp._inconsistent_label)
+
+        comp.c3.direct_inconsistency = True
+        self.assertEqual("direct", comp._inconsistent_label)
+
+        comp.c3.bases_had_inconsistency = True
+        self.assertEqual("direct+bases", comp._inconsistent_label)
+
+        comp.c3.direct_inconsistency = False
+        self.assertEqual('bases', comp._inconsistent_label)

venv/lib/python3.11/site-packages/zope/interface/tests/test_sorting.py

@@ -0,0 +1,64 @@
+##############################################################################
+#
+# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Test interface sorting
+"""
+
+import unittest
+
+from zope.interface import Interface
+
+class I1(Interface): pass
+class I2(I1): pass
+class I3(I1): pass
+class I4(Interface): pass
+class I5(I4): pass
+class I6(I2): pass
+
+
+class Test(unittest.TestCase):
+
+    def test(self):
+        l = [I1, I3, I5, I6, I4, I2]
+        l.sort()
+        self.assertEqual(l, [I1, I2, I3, I4, I5, I6])
+
+    def test_w_None(self):
+        l = [I1, None, I3, I5, I6, I4, I2]
+        l.sort()
+        self.assertEqual(l, [I1, I2, I3, I4, I5, I6, None])
+
+    def test_w_equal_names(self):
+        # interfaces with equal names but different modules should sort by
+        # module name
+        from zope.interface.tests.m1 import I1 as m1_I1
+        l = [I1, m1_I1]
+        l.sort()
+        self.assertEqual(l, [m1_I1, I1])
+
+    def test_I1_I2(self):
+        self.assertLess(I1.__name__, I2.__name__)
+        self.assertEqual(I1.__module__, I2.__module__)
+        self.assertEqual(I1.__module__, __name__)
+        self.assertLess(I1, I2)
+
+    def _makeI1(self):
+        class I1(Interface):
+            pass
+        return I1
+
+    def test_nested(self):
+        nested_I1 = self._makeI1()
+        self.assertEqual(I1, nested_I1)
+        self.assertEqual(nested_I1, I1)
+        self.assertEqual(hash(I1), hash(nested_I1))