https://github.com/python/cpython/commit/171e0facc4131f74baec38f58fb0971c52ac2c8a
commit: 171e0facc4131f74baec38f58fb0971c52ac2c8a
branch: main
author: 莯凛 <[email protected]>
committer: malemburg <[email protected]>
date: 2026-02-27T11:06:46+01:00
summary:
gh-123853: Cleanup Windows 95 locale fallback support (#144738)
Closes #123853
files:
A Misc/NEWS.d/next/Library/2026-02-21-17-34-53.gh-issue-123853.6RUwWh.rst
M Lib/locale.py
M Modules/_localemodule.c
diff --git a/Lib/locale.py b/Lib/locale.py
index dea3ee55cf4d24..e7382796905ebd 100644
--- a/Lib/locale.py
+++ b/Lib/locale.py
@@ -570,10 +570,6 @@ def _getdefaultlocale(envvars=('LC_ALL', 'LC_CTYPE',
'LANG', 'LANGUAGE')):
except (ImportError, AttributeError):
pass
else:
- # make sure the code/encoding values are valid
- if sys.platform == "win32" and code and code[:2] == "0x":
- # map windows language identifier to language name
- code = windows_locale.get(int(code, 0))
# ...add other platform-specific processing here, if
# necessary...
return code, encoding
diff --git
a/Misc/NEWS.d/next/Library/2026-02-21-17-34-53.gh-issue-123853.6RUwWh.rst
b/Misc/NEWS.d/next/Library/2026-02-21-17-34-53.gh-issue-123853.6RUwWh.rst
new file mode 100644
index 00000000000000..1babcbfd8e678a
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2026-02-21-17-34-53.gh-issue-123853.6RUwWh.rst
@@ -0,0 +1 @@
+Removed Windows 95 compatibility for :func:`locale.getdefaultlocale`.
diff --git a/Modules/_localemodule.c b/Modules/_localemodule.c
index f0a418ee5024e3..86a390e52a554b 100644
--- a/Modules/_localemodule.c
+++ b/Modules/_localemodule.c
@@ -555,17 +555,6 @@ _locale__getdefaultlocale_impl(PyObject *module)
return Py_BuildValue("ss", locale, encoding);
}
- /* If we end up here, this windows version didn't know about
- ISO639/ISO3166 names (it's probably Windows 95). Return the
- Windows language identifier instead (a hexadecimal number) */
-
- locale[0] = '0';
- locale[1] = 'x';
- if (GetLocaleInfoA(LOCALE_USER_DEFAULT, LOCALE_IDEFAULTLANGUAGE,
- locale+2, sizeof(locale)-2)) {
- return Py_BuildValue("ss", locale, encoding);
- }
-
/* cannot determine the language code (very unlikely) */
return Py_BuildValue("Os", Py_None, encoding);
}
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