Python 多线程简单案例 线程同步

# -*- codeing: utf-8 —*—

import time
import threading


# 线程同步
class MyThead(threading.Thread):

    def __init__(self, name, delay):
        threading.Thread.__init__(self)
        self.name = name
        self.delay = delay

    def run(self):
        print("开启线程: " + self.name)
        threadLock.acquire()    # 获取锁，用于线程同步
        print_time(self.name, self.delay, 3)
        threadLock.release()    # 释放锁，开启下一个线程


def print_time(thread_name, delay, counter):
    while counter:
        time.sleep(delay)
        print("%s: %s" % (thread_name, time.strftime("%Y-%m-%d %H:%M:%S")))
        counter -= 1
    pass


threadLock = threading.Lock()
threads = []


# 创建新线程
thread1 = MyThead("Thread-1", 1)
thread2 = MyThead("Thread-2", 2)

# 开启新线程
thread1.start()
thread2.start()

# 添加线程到线程列表
threads.append(thread1)
threads.append(thread2)

# 等待所有线程完成
for t in threads:
    t.join()
print("退出主线程.")