前情提要

闲的无聊，于是去学了一下python网络编程
利用本地局域网（如果你们要用那么可能需要改一下ip）建立了一个聊天室

我的参考资料

https://zhuanlan.zhihu.com/p/42695834
https://www.runoob.com/python/python-socket.html
https://blog.csdn.net/qq_37193537/article/details/91043580
https://www.runoob.com/python3/python3-multithreading.html
https://www.cnblogs.com/zhaop8078/p/11359792.html

我打出来的代码

服务端

import socket
import threading

ip_port = ('192.168.19.74',9999)

sk=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
sk.bind(ip_port)
sk.listen(1)

yh=[]

def fs(msg):
    for i in yh:
        try:
            i.send(msg.encode('utf-8'))
        except Exception as e:
            pass
        else:
            pass

def js(sed,dree):
    while 1:
        date=sed.recv(1024).decode('utf-8')#接受信息
        if date=='exit':
            sed.close#结束连接
            break
        msg=str(dree)+':   '+str(date)
        #print(msg)
        fs(msg)

def work():
    while 1:
        try:
            #print('等待用户连接')
            sed,dree=sk.accept()
            yh.append(sed)

            #加入提示
            msg='有用户加入:'+str(dree)+'  目前有'+str(len(yh))+'用户在线'
            print(msg)
            fs(msg)

            sed.send('欢迎来到在线聊天室（目前支持10人同时聊天）'.encode('utf-8'))
            js(sed,dree)
        except Exception as e:
            #print('错误:',e)
            pass
        else:
            pass

        #退出提示
        yh.remove(sed)
        msg='有用户退出:'+str(dree)+'  目前有'+str(len(yh))+'用户在线'
        print(msg)
        fs(msg)


dxc=[]
if __name__ == "__main__":
    for i in range(10):
        dxc.append(threading.Thread(target=work))
    for i in dxc:
        i.setDaemon(1)
        i.start()
    for i in dxc:
        i.join()

客户端

import socket
import threading
import time

ip_port = ('192.168.19.74',9999)

sk=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
sk.connect(ip_port)

def js():
    while 1:
        date=sk.recv(1024)#接受信息
        print(date.decode('utf-8'))

sw=threading.Thread(target=js)
sw.setDaemon(1)
sw.start()
while 1:
    date=input()
    sk.send(date.encode(encoding='utf-8'))
    if date=='exit':
        break
sk.close#结束连接