test_exceptions.py 文件源码

def test_MemoryError(self):
        # PyErr_NoMemory always raises the same exception instance.
        # Check that the traceback is not doubled.
        import traceback
        from _testcapi import raise_memoryerror
        def raiseMemError():
            try:
                raise_memoryerror()
            except MemoryError as e:
                tb = e.__traceback__
            else:
                self.fail("Should have raises a MemoryError")
            return traceback.format_tb(tb)

        tb1 = raiseMemError()
        tb2 = raiseMemError()
        self.assertEqual(tb1, tb2)