rfind(a, sub, start=0, end=None)
Calls :None:None:`str.rfind` element-wise.
Optional arguments :None:None:`start` and :None:None:`end` are interpreted as in slice notation.
Output array of ints. Return -1 on failure.
For each element in a, return the highest index in the string where substring :None:None:`sub` is found, such that :None:None:`sub` is contained within [`start`, :None:None:`end`].
The following pages refer to to this document either explicitly or contain code examples using this.
numpy.char.rindex
numpy.core.defchararray.chararray.rfind
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