Cache _get_current_python_version with @functools.cache; clear in conftest

Copilot · nathanjmcdougall · web-flow · commit bb7c15603ee3 · 2026-04-04T02:22:06.000Z
Agent-Logs-Url: https://github.com/usethis-python/usethis-python/sessions/fd92765f-45c3-47a9-88fc-14abf9492211 Co-authored-by: nathanjmcdougall <18602289+nathanjmcdougall@users.noreply.github.com>
diff --git a/src/usethis/_integrations/environ/python.py b/src/usethis/_integrations/environ/python.py
@@ -2,6 +2,8 @@
 
 from __future__ import annotations
 
+import functools
+
 from typing_extensions import assert_never
 
 from usethis._backend.dispatch import get_backend
@@ -68,6 +70,7 @@ def get_supported_minor_python_versions() -> list[PythonVersion]:
     return versions
 
 
+@functools.cache
 def _get_current_python_version() -> PythonVersion:
     """Get the inferred Python version for the current project.
 
diff --git a/tests/conftest.py b/tests/conftest.py
@@ -10,6 +10,7 @@
 from usethis._config import usethis_config
 from usethis._console import _cached_warn_print, get_icon_mode
 from usethis._file.pyproject_toml.io_ import PyprojectTOMLManager
+from usethis._integrations.environ.python import _get_current_python_version
 from usethis._subprocess import call_subprocess
 from usethis._test import change_cwd, is_offline
 from usethis._tool.impl.spec.import_linter import _importlinter_warn_no_packages_found
@@ -27,6 +28,7 @@ def clear_functools_caches():
     _cached_warn_print.cache_clear()
     get_icon_mode.cache_clear()
     _importlinter_warn_no_packages_found.cache_clear()
+    _get_current_python_version.cache_clear()
 
 
 @pytest.fixture(scope="session")
