test_types_basic.py 文件源码

def test_no_mro_no_joy(self):
        from psycopg2.extensions import adapt, register_adapter, AsIs

        class A: pass
        class B(A): pass

        register_adapter(A, lambda a: AsIs("a"))
        try:
            self.assertRaises(psycopg2.ProgrammingError, adapt, B())
        finally:
           del psycopg2.extensions.adapters[A, psycopg2.extensions.ISQLQuote]