test_support.py 文件源码

def test_forget(self):
        mod_filename = TESTFN + '.py'
        with open(mod_filename, 'w') as f:
            print('foo = 1', file=f)
        sys.path.insert(0, os.curdir)
        importlib.invalidate_caches()
        try:
            mod = __import__(TESTFN)
            self.assertIn(TESTFN, sys.modules)

            support.forget(TESTFN)
            self.assertNotIn(TESTFN, sys.modules)
        finally:
            del sys.path[0]
            support.unlink(mod_filename)
            support.rmtree('__pycache__')