pandas.Series.unique

Series.unique() [source]

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

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Licensed under the 3-clause BSD License.
https://pandas.pydata.org/pandas-docs/version/0.20.3/generated/pandas.Series.unique.html