[issue47000] Make encoding="locale" uses locale encoding even in UTF-8 mode is enabled.

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

sys.getlocaleencoding() versus locale.getencoding().

For me, the Python locale module should use the C API to access the Unix locales like LC_CTYPE, nl_langinfo(CODESET), etc.

The sys module are more for things specific to Python, like sys.getfilesystemencoding().

Since sys.getlocaleencoding() would be a fixed value for the whole process life time, I agree that the sys module is a better place.

I can write a PR adding sys.getlocaleencoding() if we agree on the API.

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<https://bugs.python.org/issue47000>
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