import threadingimport timeimport _threaddef job():    print("这是一个需要执行的任务。。。。。")    print("当前线程的个数:", threading.active_count() )    print("当前线程的信息:", threading.current_thread())    time.sleep(100)if __name__ == '__main__':    # 创建多线程时， 需要制定该线程执行的任务    _thread.start_new_thread(job, ())    _thread.start_new_thread(job, ())    job()

import threadingimport timedef job():    print("这是一个需要执行的任务。。。。。")    print("当前线程的个数:", threading.active_count() )    time.sleep(1)    print("当前线程的信息:", threading.current_thread())if __name__ == '__main__':    # 创建多线程时， 需要制定该线程执行的任务.name线程名字 target目标函数名    t1 = threading.Thread(target=job,name='job1')    t2 = threading.Thread(target=job,name='job2')    t1.start()    t2.start()    print(threading.active_count()) print("程序执行结束.....")

import threadingimport timedef job():    print("这是一个需要执行的任务。。。。。")    print("当前线程的个数:", threading.active_count() )    print("当前线程的信息:", threading.current_thread()) time.sleep(1)if __name__ == '__main__':    # 创建多线程时， 需要制定该线程执行的任务.name线程名字 target目标函数名    t1 = threading.Thread(target=job,name='job1')    t2 = threading.Thread(target=job,name='job2')    t1.start()    t2.start()    print(threading.active_count())    # 出现的问题: 主线程执行结束， 但是子线程还在运行。    # 等待所有的子线程执行结束之后， 再执行主线程    t1.join()    t2.join()    print("程序执行结束.....")

import timefrom urllib.request import urlopen# 记录时间的装饰器def timeit(f):    def wrapper(*args, **kwargs):        start_time = time.time()        res = f(*args, **kwargs)        end_time = time.time()        print("%s函数运行时间:%.2f" % (f.__name__, end_time - start_time))        return res    return wrapperdef get_addr(ip):    url = "http://ip-api.com/json/%s" % (ip)    urlObj = urlopen(url)    # 服务端返回的页面信息, 此处为字符串类型    pageContent = urlObj.read().decode('utf-8')    # 2. 处理Json数据    import json    # 解码: 将json数据格式解码为python可以识别的对象;    dict_data = json.loads(pageContent)    print("""                        %s    所在城市: %s    所在国家: %s        """ % (ip, dict_data['city'], dict_data['country']))@timeitdef main():    ips = ['12.13.14.%s' % (i + 1) for i in range(10)]    for ip in ips:        get_addr(ip)if __name__ == '__main__':    main()

import threadingimport timefrom urllib.request import urlopendef timeit(f):    def wrapper(*args, **kwargs):        start_time = time.time()        res = f(*args, **kwargs)        end_time = time.time()        print("%s函数运行时间:%.2f" % (f.__name__, end_time - start_time))        return res    return wrapperdef get_addr(ip):    url = "http://ip-api.com/json/%s" % (ip)    urlObj = urlopen(url)    # 服务端返回的页面信息, 此处为字符串类型    pageContent = urlObj.read().decode('utf-8')    # 2. 处理Json数据    import json    # 解码: 将json数据格式解码为python可以识别的对象;    dict_data = json.loads(pageContent)    print("""                        %s    所在城市: %s    所在国家: %s        """ % (ip, dict_data['city'], dict_data['country']))@timeitdef main():    ips = ['12.13.14.%s' % (i + 1) for i in range(10)]    threads = []    for ip in ips:        # 实例化10个对象，target=目标函数名，args=目标函数参数(元组格式)        t = threading.Thread(target=get_addr, args=(ip, ))        threads.append(t)        t.start()        # 等待所有子线程结束再运行主线程    [thread.join() for thread in threads]if __name__ == '__main__':    main()

import threadingimport time# 重写一个类，继承于threading.Threadclass MyThread(threading.Thread):    def __init__(self, jobName):        super(MyThread, self).__init__()        self.jobName = jobName    # 重写run方法， 实现多线程， 因为start方法执行时， 调用的是run方法;    # run方法里面编写的内容就是你要执行的任务；    def run(self):        print("这是一个需要执行的任务%s。。。。。" %(self.jobName))        print("当前线程的个数:", threading.active_count() )        time.sleep(1)        print("当前线程的信息:", threading.current_thread())if __name__ == '__main__':    t1 = MyThread("name1")    t2 = MyThread("name2")    t1.start()    t2.start()    t1.join()    t2.join()    print("程序执行结束.....")

import threadingimport timefrom urllib.request import urlopendef timeit(f):    def wrapper(*args, **kwargs):        start_time = time.time()        res = f(*args, **kwargs)        end_time = time.time()        print("%s函数运行时间:%.2f" % (f.__name__, end_time - start_time))        return res    return wrapperclass MyThread(threading.Thread):    def __init__(self, ip):        super(MyThread, self).__init__()        self.ip = ip    def run(self):        url = "http://ip-api.com/json/%s" % (self.ip)        urlObj = urlopen(url)        # 服务端返回的页面信息, 此处为字符串类型        pageContent = urlObj.read().decode('utf-8')        # 2. 处理Json数据        import json        # 解码: 将json数据格式解码为python可以识别的对象;        dict_data = json.loads(pageContent)        print("""                            %s        所在城市: %s        所在国家: %s                """ % (self.ip, dict_data['city'], dict_data['country']))@timeitdef main():    ips = ['12.13.14.%s' % (i + 1) for i in range(10)]    threads = []    for ip in ips:        # 实例化自己重写的类        t = MyThread(ip)        threads.append(t)        t.start()    [thread.join() for thread in threads]if __name__ == '__main__':    main()