client.py

import sys
from socket import socket, AF_INET, SOCK_DGRAM

SERVER_IP = '127.0.0.1'
PORT_NUMBER = 5000
SIZE = 1024

print("Test client sending packets to IP {0}, via port {1}\n".format(SERVER_IP, PORT_NUMBER))

mySocket = socket(AF_INET, SOCK_DGRAM)

while True:
    # Get Input & Send to Server
    text = raw_input("Enter some text:")
    mySocket.sendto(text, (SERVER_IP, PORT_NUMBER))

    # Recieve Reply & Print
    (data, addr) = mySocket.recvfrom(SIZE)
    print data


sys.exit()

server.py

from socket import socket, gethostbyname, AF_INET, SOCK_DGRAM
import sys
PORT_NUMBER = 5000
SIZE = 1024

hostName = gethostbyname('0.0.0.0')

mySocket = socket(AF_INET, SOCK_DGRAM)
mySocket.bind((hostName, PORT_NUMBER))

print("Test server listening on port {0}\n".format(PORT_NUMBER))

while True:
    # Recieve data from client
    (data, addr) = mySocket.recvfrom(SIZE)
    print data

    # Calculate and send
    ones = data.count("1")
    zeroes = data.count("0")

    mySocket.sendto("Number of 1s is %d, while 0s is %d" % (ones, zeroes), addr)

sys.ext()