Python 第四阶段 学习记录之----多线程

多线程

多线程例子， 注释部份即为多线程的使用

#-*- coding: utf-8 -*-
# Wind clear raise
# 2017/3/5 下午2:34

import socket
import threading
import time
import queue, json
import hashlib

def list(conn):
    conn.send(b"list")
    recv_data_size = conn.recv(1024)
    conn.send(b"OK")
    recv_data_size = int(recv_data_size.decode())
    recv_size = 0
    res = b''
    while recv_size < recv_data_size:
        data = conn.recv(1024)
        res += data
        recv_size += len(data)

    print(res.decode())

def run(username, password, i):
    client = socket.socket()
    client.connect(('localhost', 9999))
    sha = hashlib.sha256()
    sha.update(password.encode())
    data = {"account_id": username, "password": sha.hexdigest()}
    # 服务器只返回一次
    client.send(json.dumps(data).encode())
    res = client.recv(1024)
    if res != b'Fail':
        print("登录成功. 服务器返回：", res.decode(), threading.current_thread(), i)
        # list(client)

    else:
        print("密码错误")
    client.close()

def run2(name, paswd, i):
    print(i, threading.current_thread())

if __name__ == "__main__":
    # start_time = time.time()
    # d = ["alex", 'alex2', "user01"]
    # obj_t = []
    # for i in range(1000):
    #     # for name in d:
    #         # run(name, "123")
    #     t = threading.Thread(target=run, args=("alex", "123", i))
    #     # obj_t.append(t)
    #     t.start()
    #
    # # for t in obj_t:
    # #     t.start()
    # # for t in obj_t:
    # #     t.join()
    #
    # print("end:  ", time.time() - start_time)
    client = socket.socket()
    client.connect(('localhost', 9999))
    client.send(b'hello')
    print(client.recv(1024))

线程之间通信：queue

import queue

# q = queue.Queue() # 先进先出
q = queue.LifoQueue() # 后进先出

q.put(1)
q.put(2)
q.put(3)
q.put(4)
print(q.get())
print(q.get())
print(q.get())
print(q.get())

q = queue.PriorityQueue()
q.put((-1, ""))
q.put((10, ""))
q.put((5, ""))

print(q.get())
print(q.get())
print(q.get())
print(q.get())