Multithreading socket in Python. I'm missing something

[Guybrush]

I'm learning the use of multithreading and sockets in python so I'm sorry if I lack knowledge...
I'm stuck with this problem: I took this code from this forum and I tried to do some modify.
I would like to have the main thread which start a thread which listen for connection and for each connection start a new thread.
In the meanwhile the main thread has to do something (in this case print the globalVar). The globalVar is inscreased by 1 every message received.
The result with this code is:

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Hi! ('192.168.2.226', 5601) ('192.168.2.226', 5601) ('192.168.2.226', 5601) ('192.168.2.226', 5601) ('192.168.2.226', 5601) ('192.168.2.226', 5601) ('192.168.2.226', 5601)

The "hello!" string never shows up! and the globalVar isn't printed at all. What am I gettin wrong?
This is the code:

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import socket import threading   globalVar = 0 class ThreadedServer(object):     global globalVar     def __init__(self, host, port):         self.host = host         self.port = port         self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)         self.sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)         self.sock.bind((self.host, self.port))       def listen(self):         self.sock.listen(5)         while True:             client, address = self.sock.accept()             client.settimeout(60)             threading.Thread(target = self.listenToClient,args = (client,address)).start()       def listenToClient(self, client, address):         global globalVar         size = 1024         while True:             try:                 data = client.recv(size)                 if data:                     # Set the response to echo back the recieved data                     #response = data                     print(address)                     globalVar += 1                     #client.send(response)                 else:                     raise error('Client disconnected')             except:                 client.close()                 return False print("Hi!") threading.Thread(target=ThreadedServer('',5050).listen()).start() print("Hello!") while True:     print(globalVar)

[Ofnuts]

You have two extra parentheses that make your code __main__ invoke ThreadedServer.listen instead of passing a reference to it, and this makes everything run on the same thread. Use instead:

1	threading.Thread(target=ThreadedServer('',5050).listen).start()

In case of such problems, pepper you code liberally with code such as:

1	print("{object/method} run on thread:",threading.current_thread().ident)