The code sample in pandas/core/categorical.py needs a minor correction. In https://github.com/pydata/pandas/blob/master/pandas/core/categorical.py#L186: ``` >>> a = Categorical(['a','b','c','a','b','c'], ['c', 'b', 'a']) >>> a.min() ``` Shouldn't a.is_ordered() come before a.min() ?