从前有个聊天室（socket&threading）

服务器端：

 # -*- coding: utf-8 -*-
 import socket, threading

 con = threading.Condition()
 HOST = raw_input("input the server's ip adrress: ") # Symbolic name meaning all available interfaces
 PORT = 8888 # Arbitrary non-privileged port
 data = ''

 s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
 print 'Socket created'
 s.bind((HOST, PORT))
 s.listen(10)
 print 'Socket now listening'

 #Function for handling connections. This will be used to create threads
 def clientThreadIn(conn, nick):
     global data
 #infinite loop so that function do not terminate and thread do not end.
     while True:
     #Receiving from client
         try:
             temp = conn.recv(1024)
             if not temp:
                 conn.close()
                 return
             NotifyAll(temp)
             print data
         except:
             NotifyAll(nick + " leaves the room!")
             print data
             return

     #came out of loop

 def NotifyAll(sss):
     global data
     if con.acquire():
         data = sss
         con.notifyAll()
         con.release()

 def ClientThreadOut(conn, nick):
     global data
     while True:
         if con.acquire():
             con.wait()          #notifyAll effect there
             if data:
                 try:
                     conn.send(data)
                     con.release()
                 except:
                     con.release()
                     return

 while 1:
     #wait to accept a connection - blocking call
     conn, addr = s.accept()
     print 'Connected with ' + addr[0] + ':' + str(addr[1])
     nick = conn.recv(1024)
     #send only takes string
     #start new thread takes 1st argument as a function name to be run, second is the tuple of arguments to the function.
     NotifyAll('Welcome ' + nick + ' to the room!')
     print data
     print str((threading.activeCount() + 1) / 2) + ' person(s)!'
     conn.send(data)
     threading.Thread(target = clientThreadIn , args = (conn, nick)).start()
     threading.Thread(target = ClientThreadOut , args = (conn, nick)).start()

 s.close()

chatserver.py

客户端：

 # -*- coding: utf-8 -*-
 import socket, threading

 inString = ''
 outString = ''
 nick = ''

 def DealOut(s):
     global nick, outString
     while True:
         outString = raw_input()
         outString = nick + ': ' + outString
         s.send(outString)

 def DealIn(s):
     global inString
     while True:
         try:
             inString = s.recv(1024)
             if not inString:
                 break
             if outString != inString:
                 print inString
         except:
             break

 nick = raw_input("input your nickname: ")
 ip = raw_input("input the server's ip adrress: ")
 sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
 sock.connect((ip, 8888))
 sock.send(nick)

 thin = threading.Thread(target = DealIn, args = (sock,))
 thin.start()
 thout = threading.Thread(target = DealOut, args = (sock,))
 thout.start()

chatclient

我把服务器端代码放到我在阿里云买的服务器上运行后在本地运行客户端程序（ip输入服务器ip）即可进行聊天室程序：

服务器端：

两个客户端：