multiset.py 文件源码

def __eq__(self, other):
        if isinstance(other, BaseMultiset):
            return self._total == other._total and self._elements == other._elements
        if isinstance(other, (set, frozenset)):
            pass
        elif not isinstance(other, Set):
            return NotImplemented
        if self._total != len(other):
            return False
        return self._issubset(other, False)