STINNER Victor <victor.stin...@gmail.com> added the comment:
Example of Fedora 27 and Python 3.6:
vstinner@apu$ env -i LC_NUMERIC=uk_UA.koi8u python3 -c 'import locale;
print(locale.setlocale(locale.LC_ALL, ""));
print(locale.getpreferredencoding(),
ascii(locale.localeconv()["thousands_sep"]))'
LC_CTYPE=C.UTF-8;LC_NUMERIC=uk_UA.koi8u;LC_TIME=C;LC_COLLATE=C;LC_MONETARY=C;LC_MESSAGES=C;LC_PAPER=C;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=C;LC_IDENTIFICATION=C
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/usr/lib64/python3.6/locale.py", line 110, in localeconv
d = _localeconv()
UnicodeDecodeError: 'locale' codec can't decode byte 0x9a in position 0:
Invalid or incomplete multibyte or wide character
"env -i" starts Python in an empty environment. It seems like LC_CTYPE defaults
to C.UTF-8 in this case.
* LC_CTYPE = C.UTF-8, encoding = UTF-8
* LC_NUMERIC = uk_UA.koi8u, encoding = KOI8-U
With my PR, it works:
vstinner@apu$ env -i LC_NUMERIC=uk_UA.koi8u ./python -c 'import locale;
print(locale.setlocale(locale.LC_ALL, ""));
print(locale.getpreferredencoding(),
ascii(locale.localeconv()["thousands_sep"]))'
LC_CTYPE=C.UTF-8;LC_NUMERIC=uk_UA.koi8u;LC_TIME=C;LC_COLLATE=C;LC_MONETARY=C;LC_MESSAGES=C;LC_PAPER=C;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=C;LC_IDENTIFICATION=C
UTF-8 '\xa0'
=> thousands_sep byte string b'\x9A' is decoded as the Uniode string '\xa0'.
vstinner@apu$ env -i LC_NUMERIC=uk_UA.koi8u ./python -c 'import locale;
locale.setlocale(locale.LC_ALL, ""); print(ascii(f"{1234:n}"))'
'1\xa0234'
=> the number is properly formatted
vstinner@apu$ env -i LC_NUMERIC=uk_UA.koi8u ./python -c 'import locale;
locale.setlocale(locale.LC_ALL, ""); print(f"{1234:n}")'
1 234
It's possible to display the result using print().
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue31900>
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