def test_missing_key(self):
        overrides = ParamOverrides(self.po,{'name':'B'})
        try:
            overrides['doesnotexist']
        except __HOLE__:
            pass
        except:
            raise AssertionError("ParamOverrides should give AttributeError when key can't be found.")
        else:
            raise AssertionError("Test supposed to lookup non-existent attribute and raise error.")
dataset/ETHPy150Open ioam/param/tests/testparameterizedobject.py/TestParamOverrides.test_missing_key