AttributeError not passed through when calling getattr

The `AttributeError` should be passed through when calling `getattr`. For example:
```py
class test:
    def __getattr__(self, attr):
        raise AttributeError("test")

t = test()
getattr(t, 'x')
```
throws
> AttributeError: 'test' object has no attribute 'x'

instead of
> AttributeError: test