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Pandas Series: cat.rename_categories() function

Series-cat.rename_categories() function

The rename_categories() function is used to rename categories.

Syntax:

Series.cat.rename_categories(self, *args, **kwargs)

Parameters:

Name Description Type/Default Value Required / Optional
new_categories
  • list-like: all items must be unique and the number of items in the new categories must match the existing number of categories.
  • dict-like: specifies a mapping from old categories to new.
  • callable : a callable that is called on all items in the old categories and whose return values comprise the new categories.
 list-like, dict-like or callable Required
inplace Whether or not to rename the categories inplace or return a copy of this categorical with renamed categories. bool, default False Required

Returns: cat : Categorical or None

Raises: ValueError
If new categories are list-like and do not have the same number of items than the current categories or do not validate as categories

Example:


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