_______________________ test_import_all_on_second_time ________________________    def test_import_all_on_second_time():        """Test import all attributes after a normal import without '*'.        Due to import * only allowed at module level, the test body splitted        to a module file.""">       from . import importtesttests\test_import.py:20: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _    import sys    try:        del sys.modules["System.IO"]    except KeyError:        pass        assert "FileStream" not in globals()    import System.IO    from System.IO import *    >   assert "FileStream" in globals()E   AssertionErrortests\importtest.py:13: AssertionError