Traceback (most recent call last):
  File "C:\Python27\game\server.py", line 44, in <module>
    main()
  File "C:\Python27\game\server.py", line 40, in main
    reactor.listenTCP(8000,listen)
  File "c:\python27\lib\site-packages\twisted\internet\posixbase.py", line 419, in listenTCP
    p.startListening()
  File "c:\python27\lib\site-packages\twisted\internet\tcp.py", line 873, in startListening
    log.msg("%s starting on %s" % (self.factory.__class__, self._realPortNumber))
AttributeError: class listen has no attribute '__class__'