1 files changed, 11 insertions, 0 deletions
diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py
index 084b2411e79..89f2a6b916b 100644
--- a/Lib/test/support/__init__.py
+++ b/Lib/test/support/__init__.py
@@ -61,6 +61,7 @@ __all__ = [
     "without_optimizer",
     "force_not_colorized",
     "force_not_colorized_test_class",
+    "make_clean_env",
     "BrokenIter",
     "in_systemd_nspawn_sync_suppressed",
     "run_no_yield_async_fn", "run_yielding_async_fn", "async_yield",
@@ -2871,6 +2872,16 @@ def force_not_colorized_test_class(cls):
     return cls
 
 
+def make_clean_env() -> dict[str, str]:
+    clean_env = os.environ.copy()
+    for k in clean_env.copy():
+        if k.startswith("PYTHON"):
+            clean_env.pop(k)
+    clean_env.pop("FORCE_COLOR", None)
+    clean_env.pop("NO_COLOR", None)
+    return clean_env
+
+
 def initialized_with_pyrepl():
     """Detect whether PyREPL was used during Python initialization."""
     # If the main module has a __file__ attribute it's a Python module, which means PyREPL.