# pandas.CategoricalIndex.difference

`CategoricalIndex.``difference`(other)

  Return a new Index with elements from the index that are not in other.

  This is the sorted set difference of two Index objects.

  Parameters: | other : Index or array-like
  Returns: | difference : Index

  Examples

      >>> idx1 = pd.Index([1, 2, 3, 4])
      >>> idx2 = pd.Index([3, 4, 5, 6])
      >>> idx1.difference(idx2)
      Int64Index([1, 2], dtype='int64')