socket

 1 import socket
 2 sk = socket. socket()
 3 address = (‘127.0.0.1‘,8000)
 4 sk. bind( address)
 5 sk. listen(3)#设置等待的client数量
 6 conn, addr = sk.accept()#获得连接对象，和它的地址
 7 while True:
 8      date = conn. recv(1024)
 9       if not date:    #当client端退出后传过来的数据为空，client发送空，sever端不能接收，会处于阻塞状态
10             conn.close()
11             conn,addr = sk.accept()
12             continue
13      print( str( date,‘utf8‘))
14      inp = input("＞＞＞:")
15      conn. send( bytes( inp))
16 sk.close ()    

 1 import socket
 2 sk = socket.socket()
 3 addr = (‘127.0.0.1‘,8000)
 4 sk.connent(addr)
 5 while True:
 6      inp = input("输入内容")
 7      if inp==‘exit‘:
 8            break
 9      sk.send(bytes(inp))  #发送的内容与接受的内容都是bytes类型
10      
11      dete = sk.recv(1024)
12      print(str(date,‘utf8‘))
13      
14 sk.close()