python · malemburg · Feb 27, 2026 · Feb 12, 2026 · Feb 21, 2026 · Feb 21, 2026
diff --git 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
@@ -0,0 +1 @@
+Removed Windows 95 compatibility for :func:`locale.getdefaultlocale`.
diff --git 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);
 }
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Removed Windows 95 compatibility for :func:`locale.getdefaultlocale`.