多线程回顾-两种线程使用方法

桃扇骨 2023-07-17 14:19 47阅读 0赞

import threading
    import time
    """
    方法1：函数名传递
    def get_detail_html(url):
        print(" get detail html started")
        time.sleep(2)
        print("get detail html end")
    def get_detail_url(url):
        print(" get detail url started")
        time.sleep(2)
        print("get detail url end")
    if __name__ == '__main__':
        thread1 = threading.Thread(target=get_detail_html,args=("",))
        thread2 = threading.Thread(target=get_detail_url,args=("",))
        # thread1.setDaemon(True)  # 守护线程（主线程退出子线程kill）
        # thread2.setDaemon(True)
        start_time = time.time()
    
        thread1.start()
        thread2.start()
    
        thread1.join()# 线程阻塞
        thread2.join()
    
        print("时间是:{}".format(time.time()-start_time))
    
    """
    
    
    
    # 2.通过继承Thread实现多线程
    class GetDetailHtml(threading.Thread):
        def __init__(self,name):
            super().__init__(name=name)
        def run(self):
            print(" get detail html started")
            time.sleep(2)
            print("get detail html end")
    
    class GetDetailUrl(threading.Thread):
        def __init__(self,name):
            super().__init__(name=name)
        def run(self) -> None:
            print(" get detail url started")
            time.sleep(2)
            print("get detail url end")
    
    
    
    if __name__ == '__main__':
        thread1 = GetDetailHtml("get_detail_html")
        thread2 = GetDetailUrl("get_detail_url")
        start_time = time.time()
    
        thread1.start()
        thread2.start()
    
        thread1.join()  # 线程阻塞
        thread2.join()
    
        print("时间是:{}".format(time.time() - start_time))