在多线程场景中,可以使用join()方法确保所有子线程执行完毕后再继续父线程。 importthreadingimporttimeclassMyThread(threading.Thread):defrun(self):print(f"子线程{threading.current_thread().getName()}启动")time.sleep(2)# 模拟子线程任务print(f"子线程{threading.current_thread().getName()}结束")# 创...
args=(1,))thread2=threading.Thread(target=thread_func,args=(2,))thread3=threading.Thread(target=thread_func,args=(3,))thread1.start()thread1.join()# 等待thread1执行完毕thread2.start()thread2.join()# 等待thread2执行完毕thread3.start()print("All threads have completed...
print("multi_thread begin") threads=[] for url in urls: threads.append( threading.Thread(target=craw,args=(url,)) for thread in threads: thread.start() for thread in threads: thread.join() print("multi_thread end") if __name__=='__main__': start=time.time() single_thread() en...
print "IP Address:%s| Mac Address:%s" % (ip,macaddr) oq.task_done()# 告诉oq.join()已完成队列中提取元组的工 for ip in ips: in_queue.put(ip) for i in range(num_ping_threads): worker=Thread(target=pinger,args=(i,in_queue,out_queue)) #创建一个threading.Thread()的实例,给它一个...
# 添加到线程组 threads.append(thread1) threads.append(thread2) # 开启线程 for thread in threads: thread.start() # 阻塞主线程,等子线程结束 for thread in threads: thread.join() time.sleep(0.1) print("退出主线程:吃火锅结束,结账走人")...
# threads.append(t2) # #if__name__ =='__main__': #fortinthreads: # t.start() # t1.join() # t2.join() # print('all over %s'%ctime())'''共花了10秒的时间。单线程运行,需要花16秒=(10秒+6秒)'''def music(func):
threads = [] for i in range(5): t = threading.Thread(target=update_balance, args=(i,)) threads.append(t) t.start() # 等待所有线程完成 for t in threads: t.join() print(f"Final balance: {balance}") 1. 2. 3. 4. 5.
for t in threads: t.start() for t in threads: t.join() print"ok\n" 运行结果如下图所示: 可以看到一个子线程的完成不会影响另外一个子线程,父线程仍然一直被阻塞,需要等待两个子线程完成之后才会打印结果。 setDaemon()可以参考Python文档说明。大概意思就是可以设置setDaemon的参数为True来表示将该线程指...
threads=[MyThread()foriinrange(3)]# 启动三个线程fortinthreads:t.start()# 一次让新创建的线程执行 joinfortinthreads:t.join()print("End Main threading")if__name__=='__main__':main() 从打印的结果,可以清楚看到,相比上面示例打印出来的结果,主线程是在等待子线程运行结束后才结束的。
time.sleep(delay)print(f"Thread {name} is done.")# 创建线程thread1=threading.Thread(target=task,args=("Thread 1",2))thread2=threading.Thread(target=task,args=("Thread 2",1))# 启动线程thread1.start()thread2.start()# 等待线程结束thread1.join()thread2.join()print("All threads are ...