From: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Date: Thu, 6 Aug 2026 10:48:58 +0000 (+0300)
Subject: gh-155009: Fix argparse test on non-UTF-8 locales like Raspbian (#155227)
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=297eb1b7488a46c8b6c4d87caaf658463ca72059;p=thirdparty%2FPython%2Fcpython.git

gh-155009: Fix argparse test on non-UTF-8 locales like Raspbian (#155227)
---

diff --git a/Lib/test/test_argparse.py b/Lib/test/test_argparse.py
index 950671e4395c..1193cdca3e4e 100644
--- a/Lib/test/test_argparse.py
+++ b/Lib/test/test_argparse.py
@@ -7364,6 +7364,9 @@ class TestProgName(TestCase):
         basename = 'module' + os_helper.FS_NONASCII
         modulename = f'{self.dirname}.{basename}'
         self.make_script(self.dirname, basename)
+        # The filesystem encoding may be non-UTF-8,
+        # but the runner runs in UTF-8 mode
+        modulename = os.fsencode(modulename).decode("utf-8", "surrogateescape")
         runner_source = textwrap.dedent(f'''\
             import runpy
             runpy._run_module_as_main({modulename!r}, alter_argv=False)