# numpy.char.rindex

char.rindex(a, sub, start=0, end=None)

  Like `rfind`, but raises ValueError when the substring sub is not found.

  Calls `str.rindex` element-wise.

  Parameters
    a array-like of str or unicode
    sub str or unicode
    start, end int, optional
  Returns
    out ndarray

      Output array of ints.

  See also

  `rfind`, `str.rindex`

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