python3 基于tcp 简单client和server

 客户端代码
 from socket import *
 #客户端
 client=socket(AF_INET,SOCK_STREAM)
 #通讯地址
 client.connect(('172.18.100.9',8001))
 #发送消息并且  底层接收都是二进制  必须转换为二进制
 while True:
     msg=input("===>:")
     client.send(msg.encode('utf-8'))
     #接收服务端发送过来的消息
 #最大接收1024个字节
     data=client.recv(1024)

     print('收到服务端的消息是：',data.decode('utf-8'))
 client.close

from socket import *
'socket.SOCK_STREAM:tcp协议'
'socket.AF_INET :网络通信'
phone=socket(AF_INET,SOCK_STREAM)
'ip地址+端口'
phone.bind(('172.18.100.9',8001))
'监听'
phone.listen(5)
while True:
        print("我在监听中")
        #'接收客户端连接'
        conn, addr = phone.accept()
        print("有客户端连接地址为",addr)
        while True:
            try:
                '消息'
                msg=conn.recv(1024)
                print('客户端：',addr,'说:',msg.decode('utf-8'))
                # 发消息
                conn.send(msg)
            except Exception:
                break
#关闭并释放资源
conn.close()
phone.close()