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# pandas.api.extensions.ExtensionArray.isin

ExtensionArray.isin(values)

  Pointwise comparison for set containment in the given values.

  Roughly equivalent to np.array([x in values for x in self])

  Parameters:
    values np.ndarray or ExtensionArray

      Values to compare every element in the array against.

  Returns:
    np.ndarray[bool]

      With true at indices where value is in values.

  See also

  `DataFrame.isin`

    Whether each element in the DataFrame is contained in values.

  `Index.isin`

    Return a boolean array where the index values are in values.

  `Series.isin`

    Whether elements in Series are contained in values.

  Examples

      >>> arr = pd.array([1, 2, 3])
      >>> arr.isin([1])
      <BooleanArray>
      [True, False, False]
      Length: 3, dtype: boolean