Description
Over on typing-extensions we run the typed-argument-parser tests daily on various Python versions. They started failing on Python 3.13 (python/typing_extensions#513):
https://github.com/python/typing_extensions/actions/runs/12172317648/job/33950775320
typed-argument-parser tests are failing on 3.13:
=========================== short test summary info ============================
FAILED tests/test_to_tap_class.py::test_subclasser_subparser[function-args_string_and_arg_to_expected_value7] - assert "error: argument {a,b}: invalid choice: 'X' (choose from 'a', 'b')" in "usage: pytest [--foo] --arg_int ARG_INT [--arg_bool]\n [--arg_list [ARG_LIST ...]] [-h]\n {a,b} ...\npytest: error: argument {a,b}: invalid choice: 'X' (choose from a, b)\n"
+ where "error: argument {a,b}: invalid choice: 'X' (choose from 'a', 'b')" = str(SystemExit("error: argument {a,b}: invalid choice: 'X' (choose from 'a', 'b')"))
FAILED tests/test_to_tap_class.py::test_subclasser_subparser[Class-args_string_and_arg_to_expected_value7] - assert "error: argument {a,b}: invalid choice: 'X' (choose from 'a', 'b')" in "usage: pytest [--foo] --arg_int ARG_INT [--arg_bool]\n [--arg_list [ARG_LIST ...]] [-h]\n {a,b} ...\npytest: error: argument {a,b}: invalid choice: 'X' (choose from a, b)\n"
+ where "error: argument {a,b}: invalid choice: 'X' (choose from 'a', 'b')" = str(SystemExit("error: argument {a,b}: invalid choice: 'X' (choose from 'a', 'b')"))
FAILED tests/test_to_tap_class.py::test_subclasser_subparser[_Args-args_string_and_arg_to_expected_value7] - assert "error: argument {a,b}: invalid choice: 'X' (choose from 'a', 'b')" in "usage: pytest [--foo] --arg_int ARG_INT [--arg_bool]\n [--arg_list [ARG_LIST ...]] [-h]\n {a,b} ...\npytest: error: argument {a,b}: invalid choice: 'X' (choose from a, b)\n"
+ where "error: argument {a,b}: invalid choice: 'X' (choose from 'a', 'b')" = str(SystemExit("error: argument {a,b}: invalid choice: 'X' (choose from 'a', 'b')"))
FAILED tests/test_to_tap_class.py::test_subclasser_subparser[class_or_function_3-args_string_and_arg_to_expected_value7] - assert "error: argument {a,b}: invalid choice: 'X' (choose from 'a', 'b')" in "usage: pytest [--foo] --arg_int ARG_INT [--arg_bool]\n [--arg_list [ARG_LIST ...]] [-h]\n {a,b} ...\npytest: error: argument {a,b}: invalid choice: 'X' (choose from a, b)\n"
+ where "error: argument {a,b}: invalid choice: 'X' (choose from 'a', 'b')" = str(SystemExit("error: argument {a,b}: invalid choice: 'X' (choose from 'a', 'b')"))
======================== 4 failed, 301 passed in 1.58s =========================
https://github.com/python/typing_extensions/actions/runs/12172317648/job/33950775320
I suspect it's related to some of the argparse changes in Python 3.13.1. (Run git diff v3.13.0 v3.13.1 -- Lib/argparse.py in the CPython repo; a fair amount of code changed.) I haven't looked into this further.