Method get

Lib/collections/__init__.py:1069–1070

(self, key, default=None)

        return self.__missing__(key)            # support subclasses that define __missing__

    def get(self, key, default=None):
        return self[key] if key in self else default    # needs to make use of __contains__

    def __len__(self):
        return len(set().union(*self.maps))     # reuses stored hash values if possible