mypy

74df7fb1 - Fix Stubgen's behavior for Instance Variables in C extensions (#12524)

Fix Stubgen's behavior for Instance Variables in C extensions (#12524) It is not necessary for instance variables to have the fget attrbute (e.g. instance variable in a C class in an extension) but inspect.isdatadescriptor return True as expected, hence we update the 'is_c_property' check. Since special attributes (like __dict__ etc) also passes 'is_c_property' check, we ignore all such special attributes in 'generate_c_property_stub' while creating the contents of stub file. Also, 'is_c_property_readonly' assumed that the property would always have 'fset' attribute which again is not true for instance variables in C extension. Hence make the check defensive by first checking if 'fset' attribute even exists or not. Fixes #12150.