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# pandas.Index.unique

Index.unique(level=None)

  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

  `unique`

    Numpy array of unique values in that column.

  `Series.unique`

    Return unique values of Series object.

  Examples

      >>> idx = pd.Index([1, 1, 2, 3, 3])
      >>> idx.unique()
      Index([1, 2, 3], dtype='int64')