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# pandas.api.extensions.ExtensionArray.unique

ExtensionArray.unique()

  Compute the ExtensionArray of unique values.

  Returns:
    pandas.api.extensions.ExtensionArray

      With unique values from the input array.

  See also

  `Index.unique`

    Return unique values in the index.

  `Series.unique`

    Return unique values of Series object.

  `unique`

    Return unique values based on a hash table.

  Examples

      >>> arr = pd.array([1, 2, 3, 1, 2, 3])
      >>> arr.unique()
      <IntegerArray>
      [1, 2, 3]
      Length: 3, dtype: Int64