python开启多线程

from threading import Thread


class MyThread(Thread):
    def __init__(self, func, args):
        super(MyThread, self).__init__()
        self.func = func
        self.args = args

    def run(self):
        self.result = self.func(*self.args)

    def get_result(self):
        try:
            return self.result
        except Exception:
            return None


def run(i):
    time.sleep(2)
    return i


if __name__ == '__main__':
    a = time.time()
    threads = []
    result = []
    for i in range(11):
        task = MyThread(run, args=(i,))
        threads.append(task)
    for single_task in threads:
        single_task.start()
    for single_task in threads:
        single_task.join()
    for single_task in threads:
        result.append(single_task.get_result())

    for i in result:
        print(i)
    print(time.time() - a)