wait on socket and redirect to stdout

nc.py

import socket, os, sys

addr = ("", 4444)
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(addr)
s.listen(1)
conn, addr = s.accept()
while 1:
    data = conn.recv(1024)
    if not data: break
    sys.stdout.write(data)
s.close()