_types.py 文件源码

def __init__(self, key, return_previous=None):
        """

        :param key: The key or key set to delete.
        :type key: bytes or :class:`txaioetcd.KeySet`

        :param return_previous: If enabled, return the deleted key-value pairs
        :type return_previous: bool or None
        """
        Op.__init__(self)

        if key is not None and type(key) != six.binary_type and not isinstance(key, KeySet):
            raise TypeError('key must be bytes or KeySet, not {}'.format(type(key)))

        if isinstance(key, KeySet):
            self.key = key
        else:
            self.key = KeySet(key)

        if return_previous is not None and type(return_previous) != bool:
            raise TypeError('return_previous must be bool, not {}'.format(type(return_previous)))

        self.return_previous = return_previous