PyMyQQ is a python wrapper for the myqq library, which could act as a QQ client.

with Client(sys.argv[1], sys.argv[2]) as c:
    for p in c.login():
        if p == P_VERIFYING:
            c.verify(raw_input("please input the captcha in the verify subfolder: "))
            
    for buddy in c.buddies:
        buddy.say("Hello world, imbot from pymyqq <http://code.google.com/p/pymyqq/>!")
        
    for msg, args in c.messages:
        print msg, args['msg']

Please check the helloworld.py for more detail, and pymyqq.py for a full feature demo.

The current version support Linux and Cygwin platform