nc_server.py

importselect, socket
server=socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.setblocking(0)
server.bind(('localhost', 65110))
server.listen(5)
inputs= [server]

whileinputs:
outputs= []
readable, writable, exceptional=select.select(
inputs, outputs, inputs)
forsinreadable:
ifsisserver:
connection, client_address=s.accept()
connection.setblocking(0)
inputs.append(connection)
else:
data=s.recv(1024)
ifnotdata:
inputs.remove(s)
s.close()

forsinexceptional:
inputs.remove(s)
s.close()