test_atexit.py 文件源码

def test_unregister(self):
        a = [0]
        def inc():
            a[0] += 1
        def dec():
            a[0] -= 1

        for i in range(4):
            atexit.register(inc)
        atexit.register(dec)
        atexit.unregister(inc)
        atexit._run_exitfuncs()

        self.assertEqual(a[0], -1)