python並發編程：多線程-開啟線程的兩種方式

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一 threading模組介紹

multiprocess模組完全模仿了threading模組的介面，二者在使用層面，有很大的相似性

二 開啟線程的兩種方式

方式一

from threading import Threadimport timedef sayhi(name):    time.sleep(2)    print("%s say hello" % name)if __name__ == ‘__main__‘:    t = Thread(target=sayhi, args=(‘mike‘, ))    t.start()    print("主線程")

　　方式二

from threading import Threadimport timeclass Sayhi(Thread):    def __init__(self, name):        super().__init__()        self.name = name    def run(self):        time.sleep(2)        print(‘%s say hello‘ % self.name)if __name__ == ‘__main__‘:    t = Sayhi(‘mike‘)    t.start()    print("主線程")

　　

三 練習題

1、基於多線程實現並發的通訊端通訊

用戶端：

from socket import *ip = ‘127.0.0.1‘port = 8081c = socket(AF_INET, SOCK_STREAM)c.connect((ip, port))while True:    msg = input("請輸入用戶端的資訊").strip()    if not msg:        continue    c.send(msg.encode(‘utf-8‘))    data = c.recv(1024)    print("收到的資訊:", data.decode(‘utf-8‘))

　　

服務端：

from socket import *from threading import Threaddef talk(conn):    while True:        try:            data = conn.recv(1204)            if not data:                break            conn.send(data.upper())        except ConnectionResetError:            break    conn.close()def server(ip, port):    server_socket = socket(AF_INET, SOCK_STREAM)    server_socket.bind((ip, port))    server_socket.listen(1)    while True:        conn, addr = server_socket.accept()        p = Thread(target=talk, args=(conn,))        p.start()    conn.close()if __name__ == ‘__main__‘:    server(‘127.0.0.1‘, 8081)

 

python並發編程：多線程-開啟線程的兩種方式