def writeSequence(data):
        """
        Write an iterable of byte strings to the physical connection.

        If possible, make sure that all of the data is written to
        the socket at once, without first copying it all into a
        single byte string.

        @type data: an iterable of L{bytes}
        @param data: The data to write.
        """

        Write an iterable of byte strings to the physical connection.

        If possible, make sure that all of the data is written to
        the socket at once, without first copying it all into a
        single byte string.

        @type data: an iterable of L{bytes}
        @param data: The data to write.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/internet/interfaces.py