def find_spec(self, fullname, path=None, target=None):
    'Return a module spec for vendored names.'
    return (importlib.util.spec_from_loader(fullname, self) if self._module_matches_namespace(fullname) else None)
Return a module spec for vendored names.
def find_spec(self, fullname, path=None, target=None):
    
    return (importlib.util.spec_from_loader(fullname, self) if self._module_matches_namespace(fullname) else None)