def setUp(self):
        """
        Create and connect a L{finger.Finger} instance.
        """
        self.transport = StringTransport()
        self.protocol = finger.Finger()
        self.protocol.makeConnection(self.transport)

        Create and connect a L{finger.Finger} instance.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/test/test_finger.py