pandas.Index.unique¶
- Index.unique(level=None)[source]¶
 Return unique values in the index.
Unique values are returned in order of appearance, this does NOT sort.
- Parameters
 - levelint or hashable, optional
 Only return values from specified level (for MultiIndex). If int, gets the level by integer position, else by level name.
- Returns
 - Index
 
See also
uniqueNumpy array of unique values in that column.
Series.uniqueReturn unique values of Series object.