28 lines
739 B
Python
28 lines
739 B
Python
class Field:
|
|
def __set_name__(self, owner, name):
|
|
self.name = name
|
|
|
|
def __get__(self, inst, cls):
|
|
if inst is None:
|
|
return self
|
|
assert self.name is not None
|
|
return inst._fields[self.name]
|
|
|
|
def __set__(self, inst, value):
|
|
assert self.name is not None
|
|
inst._fields[self.name] = value
|
|
|
|
def _set_namespace(self, inst, name, namespaces):
|
|
if name is None:
|
|
return
|
|
|
|
if name not in namespaces:
|
|
raise KeyError("namespace %s not found" % (name))
|
|
inst._namespace_prefix = name
|
|
|
|
def _call(self, inst, method, *args):
|
|
call = getattr(inst, method or '', None)
|
|
|
|
if callable(call):
|
|
return call(*args)
|