[Twisted-Python] What is wrong with this instance?

As a topic. I got the code: ^^^ form twisted.protocols.telnet import Telnet def keep(): telnet=Telnet() print type(telnet) print getattr(telnet,'write')#all OK until here telnet.write("msg") print "msg" keep() ^^^ and I got TypeError: unbound method write() must be called with Telnet instance as first argument (got str instance instead) I really don't understand where is the mistake.