add a comment as to why we test the type of the returned object

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@39761 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/dynamic/dynamic_module.py

@@ -14,7 +14,9 @@ class DynamicModule(ModuleType):
         if name == '__path__':
             raise AttributeError('%s does not have __path__' % (self,))
         obj = self._factory(name)
-        if hasattr(obj, '__module__'):
+        # _factory can return an instance, a constant, or a class
+        if isinstance(obj, type):
+            # if it's a class we want to set __module__
             obj.__module__ = self.__name__
         setattr(self, name, obj)
         return obj