def check_method_has_attr_via_mro(obj, method_name, attr_name):
""" Check that method has specified attr in MRO
"""
for method in resolve_mro(obj, method_name, callable):
if hasattr(method, attr_name):
return True
return False
def get_method_priority_via_mro(obj, method_name, attr_name, default):
""" Get the priority for method from attr 'attr_name',
checking all overrides in mro order and looking for first non None
value. If no such value found, then default value will be applied
"""
for method in resolve_mro(obj, method_name, callable):
meth_val = getattr(method, attr_name, None)
if meth_val is not None:
return meth_val
return default
def get_method_fields_via_mro(obj, method_name, attr_name):
""" Get set of all fields metioned in attr 'attr_name' of method in all
method overrides in subclasses
"""
return set(field for method in resolve_mro(obj, method_name, callable)
for field in getattr(method, attr_name, []))