def __init__(self, command, **kwargs):
        """
        Create a command.

        @param command: the name of the command.
        @type command: L{bytes}

        @param kwargs: this values will be stored as attributes of the object
            for future use
        """
        self.command = command
        self._deferred = Deferred()
        for k, v in kwargs.items():
            setattr(self, k, v)

        Create a command.

        @param command: the name of the command.
        @type command: L{bytes}

        @param kwargs: this values will be stored as attributes of the object
            for future use
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/protocols/memcache.py