pandas.Index.unique

Index.unique()

Return unique values in the object. Uniques are returned in order of appearance, this does NOT sort. Hash table-based unique.

Parameters:

values : 1d array-like

Returns:

unique values.

• If the input is an Index, the return is an Index
• If the input is a Categorical dtype, the return is a Categorical
• If the input is a Series/ndarray, the return will be an ndarray

See also

unique, Index.unique, Series.unique