https://github.com/python/cpython/commit/d4e6dee0800f35e50b459269c5da2b91c071af0b
commit: d4e6dee0800f35e50b459269c5da2b91c071af0b
branch: 3.14
author: Miss Islington (bot) <[email protected]>
committer: vstinner <[email protected]>
date: 2026-05-28T17:15:20Z
summary:

[3.14] gh-150046: Fix `test_add_python_opts` to ignore `PYTHON*` env vars 
(GH-150089) (#150562)

gh-150046: Fix `test_add_python_opts` to ignore `PYTHON*` env vars (GH-150089)

Avoid the runtime environment from affecting the tests' behaviours,
which notably checks the warning filters which can be controlled by
various PYTHON environment variables.
(cherry picked from commit ef2246f788832a64ba7c5215c8e72f8e539e59b4)

Co-authored-by: Pradyun Gedam <[email protected]>

files:
M Lib/test/test_regrtest.py

diff --git a/Lib/test/test_regrtest.py b/Lib/test/test_regrtest.py
index c9afe62373e70b..42cc1c2f7c7eaa 100644
--- a/Lib/test/test_regrtest.py
+++ b/Lib/test/test_regrtest.py
@@ -2276,7 +2276,8 @@ def test_python_opts(self):
         proc = subprocess.run(cmd,
                               stdout=subprocess.PIPE,
                               stderr=subprocess.STDOUT,
-                              text=True)
+                              text=True,
+                              env=support.make_clean_env())
         self.assertEqual(proc.returncode, 0, proc)
 
     def test_add_python_opts(self):

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