There are several things that we can do better:

1. Do not skip all tests if _interpreters module is missing

   cpython/Lib/test/test_interpreters/test_stress.py

   Lines 7 to 8 in ea7f64a

   	# Raise SkipTest if subinterpreters not supported.
   	_interpreters = import_helper.import_module('_interpreters')

   It is only needed for two tests
2. Add @threading_helper.requires_working_threading() to

   cpython/Lib/test/test_interpreters/test_stress.py

   Lines 28 to 31 in ea7f64a

   	@support.bigmemtest(size=200, memuse=32*2**20, dry_run=False)
   	def test_create_many_threaded(self, size):
   	alive = []
   	start = threading.Event()

3. Remove memhooks from

   cpython/Lib/test/test_interpreters/test_stress.py

   Lines 79 to 85 in ea7f64a

   	def test_create_interpreter_no_memory(self):
   	import _testcapi
   	assertion = self.assertRaises(InterpreterError)
   	_testcapi.set_nomemory(0, 1)
   	with assertion:
   	_interpreters.create()

   so they won't mess with the environment

I have a PR ready.

Linked PRs

• gh-152391: Improve test_interpreters.test_stress test #152396
• [3.15] gh-152391: Improve test_interpreters.test_stress test (GH-152396) #152427
• [3.14] gh-152391: Improve test_interpreters.test_stress test (GH-152396) #152428
• [3.13] gh-152391: Improve test_interpreters.test_stress test (GH-152396) #152430