test_asyncore.py 文件源码

def test_close_twice(self):
        fd = os.open(support.TESTFN, os.O_RDONLY)
        f = asyncore.file_wrapper(fd)
        os.close(fd)

        f.close()
        self.assertEqual(f.fd, -1)
        # calling close twice should not fail
        f.close()