Python 多线程简单案例threading 模块创建线程

# -*- codeing: utf-8 —*—

import time
import threading


# 使用 threading 模块创建线程
class MyThread(threading.Thread):

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

    def run(self):
        print("开始线程: " + self.name)
        print_time(self.name, self.delay, 5)
        print("退出线程: " + self.name)
    pass


def print_time(thread_name, delay, counter):
    """
    打印时间
    :param thread_name: 线程名称
    :param delay: 延迟时长
    :param counter: 计数器
    :return:
    """
    while counter:
        time.sleep(delay)
        print("%s: %s" % (thread_name, time.strftime("%Y-%m-%d %H:%M:%S")))
        counter -= 1
    pass


# 创建新线程
thread1 = MyThread("Thread-1", 1)
thread2 = MyThread("Thread-2", 2)
# 开启新线程
thread1.start()     # 启动线程活动。
thread2.start()
thread1.join()      # 等待至线程中止。
thread2.join()
print("退出主线程")