线程练习

1.写一个基于TCP协议套接字，服务端实现接收客户端的连接并发。

#server 
import socket
from  threading import Thread 
import threading
server = socket.socket()
server.bind(
    ('127.0.0.1',9527)
)

server.listen(3)

def action(conn):
    while True:
        data = conn.recv(1024)
        print(data)
        conn.send(data.upper())
if __name__ == '__main__':

    while True:
        conn,addr = server.accept()
        p = threading.Thread(target=action,args = (conn,))
        p.start()
 


#client
import socket       
client = socket.socket()

client.connect(
    ('127.0.0.1',9527)
)
while True: 
    msg = input('>>: ').strip()
    if not msg:
        continue
    client.send(msg.encode('utf-8'))
    data = client.recv(1024)
    
    print(data)

2.编写一个简单的文本处理工具，具备三个任务，一个接收用户输入，一个将用户输入的内容格式化成大写，一个将格式化后的结果存入文件

from threading import Thread
msgs = []
format = []

def talk():
    while True:
        msg = input('>>: ').strip()
        if not msg:
            continue
        msgs.append(msg)

def format_msg():
    while True:
        if msgs:
            res = msgs.pop() #列表-删除最后的值
            format.append(res.upper())


def save():
    while True:
        if format:
            with open('db.txt','a',encoding='utf-8') as f:
                res = format.pop()
                f.write(f'{res}\n')


if __name__ == '__main__':
    t1 = Thread(target=talk)
    t2 = Thread(target=format_msg)
    t3 = Thread(target=save)
    t1.start()
    t2.start()
    t3.start()