importthreadingimporttimedefcrawl(link,delay=3):print(f"crawl started for{link}")time.sleep(delay)# 阻塞 I/O (模拟网络请求)print(f"crawl ended for{link}")links= ["https://python.org","https://docs.python.org","https://peps.python.org",]# 针对每个链接启动线程threads= []forlinkinlinks:# 使用 `args` 传入位置参数并使用 `kwargs` 传入关键字参数t=threading.Thread(target=crawl,args=(link,),kwargs={"delay":2})threads.append(t)# 启动每个线程fortinthreads:t.start()# 等待所有线程结束fortinthreads:t.join()

importthreadingimporttimedefcrawl(link,delay=3):print(f"crawl started for{link}")time.sleep(delay)# Blocking I/O (simulating a network request)print(f"crawl ended for{link}")links= ["https://python.org","https://docs.python.org","https://peps.python.org",]# Start threads for each linkthreads= []forlinkinlinks:# Using `args` to pass positional arguments and `kwargs` for keyword argumentst=threading.Thread(target=crawl,args=(link,),kwargs={"delay":2})threads.append(t)# Start each threadfortinthreads:t.start()# Wait for all threads to finishfortinthreads:t.join()