Can' t find condition to stop simple telnet server on python

Question

I want to create simple server. But condition for closing of connection by server isn't satisfies.

import socket
soc = socket.socket()
soc.bind(('', 33333))
soc.listen(2)
(conn, address) = soc.accept()
while True:
    data = conn.recv(1024)
    conn.sendall(data)
    if(data == 'stop'):
        conn.close()
        break

Ubuntu bash after running of this code:

~$ telnet localhost 33333
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
stop
stop

Answer 1

The variable data actually equals to 'stop\r\n'.

Use str.strip to remove the line terminator:

if data.strip() == 'stop':

EDIT: Consider acquiring data using:

data = ''
while not data.endswith('\n'):
    data += conn.recv(1024)

You might also want to read the Socket Programming HOWTO from the official documentation.