# numpy.tril_indices_from

numpy.tril_indices_from(arr, k=0)

  Return the indices for the lower-triangle of arr.

  See `tril_indices` for full details.

  Parameters
    arr array_like

      The indices will be valid for square arrays whose dimensions are the same as arr.

    k int, optional

      Diagonal offset (see `tril` for details).

  See also

  `tril_indices`, `tril`

  Notes

  New in version 1.4.0.

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