Series.
cat
Accessor object for categorical properties of the Series values.
Be aware that assigning to categories is a inplace operation, while all methods return new categorical data per default (but can be called with inplace=True).
Examples
>>> s.cat.categories >>> s.cat.categories = list('abc') >>> s.cat.rename_categories(list('cab')) >>> s.cat.reorder_categories(list('cab')) >>> s.cat.add_categories(['d','e']) >>> s.cat.remove_categories(['d']) >>> s.cat.remove_unused_categories() >>> s.cat.set_categories(list('abcde')) >>> s.cat.as_ordered() >>> s.cat.as_unordered()