test_translator.py 文件源码

def test_is(self):
        # object comparison not yet supported
        node = ast.parse("1 is 3")
        self.assertRaises(SyntaxError, self.fc.visit, node)

        node = ast.parse("1 is 3 is 4")
        self.assertRaises(SyntaxError, self.fc.visit, node)

        node = ast.parse("a is 1")
        self.assertRaises(SyntaxError, self.fc.visit, node)

        node = ast.parse("a is b is c")
        self.assertRaises(SyntaxError, self.fc.visit, node)

        node = ast.parse("a is x.some_method(b)")
        self.assertRaises(SyntaxError, self.fc.visit, node)

        node = ast.parse("x.some_method(a) is x.some_method(b)" +
                         " is x.some_method(c) is x.some_method(d)")
        self.assertRaises(SyntaxError, self.fc.visit, node)