odict.py 文件源码

def __deepcopy__(self, memo):
        """
        To allow deepcopy to work with OrderedDict.

        >>> from copy import deepcopy
        >>> a = OrderedDict([(1, 1), (2, 2), (3, 3)])
        >>> a['test'] = {}
        >>> b = deepcopy(a)
        >>> b == a
        True
        >>> b is a
        False
        >>> a['test'] is b['test']
        False
        """
        from copy import deepcopy
        return self.__class__(deepcopy(self.items(), memo), self.strict)


### Read-only methods ###