# Read username, output from non-empty factory, drop connections
from twisted.internet import protocol, reactor
from twisted.protocols import basic
class FingerProtocol(basic.LineReceiver):
    def lineReceived(self, user):
        self.transport.write(self.factory.getUser(user)+"\r\n")
        self.transport.loseConnection()
class FingerFactory(protocol.ServerFactory):
    protocol = FingerProtocol
    def __init__(self, **kwargs): self.users = kwargs
    def getUser(self, user):
        return self.users.get(user, "No such user")
reactor.listenTCP(1079, FingerFactory(moshez='Happy and well'))
reactor.run()