python每日作业 4/24

# 作业

* 整理并发编程三天内容理论，用自己的概述
* 需要掌握如何开设进程和如何开设线程的代码
* 利用多进程或多线程自己实现TCP服务端的并发
* 整理python基础阶段知识点及项目代码，ATM购物车，选课系统一定要自己脱稿从头到位敲出来
* 预习并发编程剩余知识点，参考博客小猿取经

TCP服务端实现并发的效果

1、用多进程实现：

#多进程
from multiprocessing import Process
import socket

phone=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
phone.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)

phone.bind(("127.0.0.1",9000))
phone.listen(5)

#通信循环函数
def talk(conn,client_addr):
    while True:
        try:
            msg=conn.recv(1024)
            if not msg:break
            conn.send(msg.upper())
        except Exception:
            break

if __name__ == '__main__':
    while True:
        conn,client_addr=phone.accept()
        p=Process(target=talk,args=(conn,client_addr))
        p.start()

server

from socket import *

client=socket(AF_INET,SOCK_STREAM)
client.connect(('127.0.0.1',8080))


while True:
    msg=input('>>: ').strip()
    if not msg:continue

    client.send(msg.encode('utf-8'))
    msg=client.recv(1024)
    print(msg.decode('utf-8'))

client

2、多线程实现

from threading import Thread
import socket

phone=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
phone.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)

phone.bind(("127.0.0.1",9000))
phone.listen(5)

#通信循环函数
def talk(conn,client_addr):
    while True:
        try:
            msg=conn.recv(1024)
            if not msg:break
            conn.send(msg.upper())
        except Exception:
            break

if __name__ == '__main__':
    while True:

        #多线程
        conn, client_addr = phone.accept()
        t=Thread(target=talk,args=(conn,client_addr))
        t.start()

server

from socket import *

client=socket(AF_INET,SOCK_STREAM)
client.connect(('127.0.0.1',9000))


while True:
    msg=input('>>: ').strip()
    if not msg:continue

    client.send(msg.encode('utf-8'))
    msg=client.recv(1024)
    print(msg.decode('utf-8'))

client