ordereddict.py 文件源码

def __reduce__(self):
    items = [[k, self[k]] for k in self]
    tmp = self.__map, self.__end
    del self.__map, self.__end
    inst_dict = vars(self).copy()
    self.__map, self.__end = tmp
    if inst_dict:
      return (self.__class__, (items,), inst_dict)
    return self.__class__, (items,)