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# pandas.Series.is_unique

property Series.is_unique

  Return True if values in the object are unique.

  This property checks whether all values in the Series or Index are distinct, including missing values.

  Returns:
    bool

  See also

  `Series.unique`

    Return unique values of Series object.

  `Series.drop_duplicates`

    Return Series with duplicate values removed.

  `Series.duplicated`

    Indicate duplicate Series values.

  Examples

      >>> s = pd.Series([1, 2, 3])
      >>> s.is_unique
      True

      >>> s = pd.Series([1, 2, 3, 1])
      >>> s.is_unique
      False