A example code of multithread communication in Python

import socket
from threading import  *
HOST=''
PORT=1777

class ServThread(Thread):
  def run(self):
    servSocket=socket.socket()
    servSocket.bind((HOST,PORT))
    servSocket.listen(5)
    while 1:
      conn,addr=servSocket.accept()
      data=conn.recv(1024)
      print 'Address is: %s /n' % repr(addr)
      print 'Server eceived data is: %s /n' % data
      conn.send('server send data')
      conn.close()
      break
    servSocket.close()
   
   
class ClientThread(Thread):
  def run(self):
      clientSocket=socket.socket()
      clientSocket.connect(('localhost',PORT))
      clientSocket.send('client send data')
      data=clientSocket.recv(1024)
      print 'Client received data is: %s /n' % data
      clientSocket.close()
     
def runtest():
  servThread=ServThread()
  servThread.start()
 
  clientThread=ClientThread()
  clientThread.start()
 
  servThread.join()
  clientThread.join()

if __name__=='__main__':
  runtest()