Se crea modelo de llamada y se hace valida fecha por defecto = hoy

__init__.py

@@ -1,12 +1,14 @@
 from trytond.pool import Pool
 from . import prospect
 from . import prospect_trace
+from . import call
 
 __all__ = ['register']
 
 
 def register():
     Pool.register(
+        call.Call,
         prospect.Prospect,
         prospect_trace.ProspectTrace,
         module='sale_opportunity_management', type_='model')

call.py

@@ -0,0 +1,13 @@
+from trytond.model import ModelSQL, ModelView, fields 
+from datetime import date
+
+class Call(ModelSQL, ModelView):
+    'Llamada'
+    
+    __name__ = 'sale.call'
+
+    date = fields.Date('Fecha', )
+
+    @classmethod
+    def default_date(cls):
+        return date.today()

tests/scenario_sale_opportunity_management.rst

@@ -6,6 +6,7 @@ Imports::
 
     >>> from proteus import Model, Wizard
     >>> from trytond.tests.tools import activate_modules
+    >>> from datetime import date
 
 Activate modules::
 
@@ -35,4 +36,15 @@ Crear seguimiento de prospecto::
     >>> prospect_trace.prospect_name
     'guchito S.A.S'
     >>> prospect_trace.prospect_tel 
-    3123423422
+    3123423422
+
+----------------------------------------------------------------------------
+Como operador quiero poder registrar una llamada para luego generar reportes
+----------------------------------------------------------------------------
+
+Crear llamada a un seguimiento de prospecto::
+    >>> Call = Model.get('sale.call')
+    >>> call = Call()
+
+    >>> call.date == date.today()
+    True