multiset.py 文件源码

def _as_multiset(cls, other):
        if isinstance(other, BaseMultiset):
            return other
        if isinstance(other, _all_basic_types):
            pass
        elif not isinstance(other, Iterable):
            raise TypeError("'%s' object is not iterable" % type(other))  # pragma: no cover
        return cls(other)