➜  cpython git:(main) ✗ export PYTHONUNBUFFERED=1         
➜  cpython git:(main) ✗ python3 -m test test_cmd_line
Using random seed: 2481773783
Raised RLIMIT_NOFILE: 256 -> 1024
0:00:00 load avg: 2.40 Run 1 test sequentially in a single process
0:00:00 load avg: 2.40 [1/1] test_cmd_line
test test_cmd_line failed -- Traceback (most recent call last):
  File "/opt/homebrew/Cellar/python@3.13/3.13.1/Frameworks/Python.framework/Versions/3.13/lib/python3.13/test/test_cmd_line.py", line 348, in test_non_interactive_output_buffering
    self.assertEqual(proc.stdout,
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
                     'False False False\n'
                     ^^^^^^^^^^^^^^^^^^^^^
                     'False False True\n')
                     ^^^^^^^^^^^^^^^^^^^^^
AssertionError: 'False True False\nFalse True False\n' != 'False False False\nFalse False True\n'
- False True False
?       ^^^
+ False False False
?       ^^^^
- False True False
+ False False True


test_cmd_line failed (1 failure)

== Tests result: FAILURE ==

1 test failed:
    test_cmd_line

Total duration: 2.8 sec
Total tests: run=59 failures=1 skipped=1
Total test files: run=1/1 failed=1
Result: FAILURE