python 学习_第四模块 并发编程（多线程）

from threading  import  Thread
import  time

def say(name):
    time.sleep(2)
    print("%s hello"%name)

if __name__ =="__main__":
    t = Thread(target=say,args=("alex",))
    t.start()

    print("主线程")

from  threading import  Thread
import  time

class say(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 = say("alex")
    t.start()
    print("主线程")

from  socket import  *
from threading import Thread

def communicate(conn):
    while True:
        try:
            data = conn.recv(1024)
            if not data:break
            conn.send(data.upper())
        except ConnectionResetError:
            break
    conn.close()


def server(ip,port):
    server = socket(AF_INET,SOCK_STREAM)
    server.bind((ip,port))
    server.listen(5)

    while True:
        conn,addr = server.accept()
        t = Thread(target=communicate,args=(conn,))
        t.start()

    server.close()

if __name__ == "__main__":
    server("127.0.0.1",8080)

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"))
    data = client.recv(1024)
    print(data.decode("utf-8"))

client.close()