test_concurrent_futures.py 文件源码

def test_first_completed_some_already_completed(self):
        future1 = self.executor.submit(time.sleep, 1.5)

        finished, pending = futures.wait(
                 [CANCELLED_AND_NOTIFIED_FUTURE, SUCCESSFUL_FUTURE, future1],
                 return_when=futures.FIRST_COMPLETED)

        self.assertEqual(
                set([CANCELLED_AND_NOTIFIED_FUTURE, SUCCESSFUL_FUTURE]),
                finished)
        self.assertEqual(set([future1]), pending)