Python LAN Walkie Talkie CLI Application (Python 2.7)

walkietalkie.py

import sys
import os
import socket
import time

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.settimeout(2)
if "--listen" in sys.argv:
    print "WalkieTalkie Listener Turned On.."
    server_address = ('', 9434)
    sock.bind(server_address)
    while True:
        try:
            data, address = sock.recvfrom(4096)
            data = str(data.decode('UTF-8'))
            print(str(address[0])+': '+data)
        except KeyboardInterrupt:
            print "Aborted!"
            break
        except socket.timeout as e:
            time.sleep(1)
            continue
        except socket.error as e:
            print e
            sys.exit(1)
else:
    print "WalkieTalkie Broadcast Turned On.."
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
    server_address = ('255.255.255.255', 9434)
    while True:
        s=raw_input("Enter message: ")
        if s == "exit":
            print "WalkieTalkie Broadcast Turning Off.."
            sys.exit(1)
        sock.sendto(s.encode(), server_address)

For python 3.x:

import sys
import os
import socket
import time

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.settimeout(2)
if "--listen" in sys.argv:
    print("WalkieTalkie Listener Turned On..")
    server_address = ('', 9434)
    sock.bind(server_address)
    while True:
        try:
            data, address = sock.recvfrom(4096)
            data = str(data.decode('UTF-8'))
            print(str(address[0])+': '+data)
        except KeyboardInterrupt:
            print("Aborted!")
            break
        except socket.timeout as e:
            time.sleep(1)
            continue
        except socket.error as e:
            print(e)
            sys.exit(1)
else:
    print("WalkieTalkie Broadcast Turned On..")
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
    server_address = ('255.255.255.255', 9434)
    while True:
        s=input("Enter message: ")
        if s == "exit":
            print("WalkieTalkie Broadcast Turning Off..")
            sys.exit(1)
        sock.sendto(s.encode(), server_address)