[issue17301] An in-place version of many bytearray methods is needed

[INADA Naoki]

INADA Naoki added the comment:

I prefer ".inplace_translate" to ".mtranslate", but I'm not sure about it's worth enough to add it to bytearray.

In last year, I proposed adding `bytes.frombuffer()` constructor to avoid
unnecessary memory copy.
https://mail.python.org/pipermail/python-dev/2016-October/146668.html

Nick Coghlan againsted for adding methods to builtin type only for low level
programming, and suggested to implement it in 3rd party library first.
https://mail.python.org/pipermail/python-dev/2016-October/146746.html
https://mail.python.org/pipermail/python-dev/2016-October/146763.html

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nosy: +inada.naoki

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17301>
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