No module importlib.readers breaks pytest==7.0.0 with python 3.9 #9608
Description
My project is using python 3.9 and we hit this today when 7.0.0 released:
pytest/src/_pytest/assertion/rewrite.py
Lines 279 to 283 in 5eb4d69
Because this import does not seem to be working/reference existing code
/var/lib/awx/venv/awx/lib64/python3.9/site-packages/_pytest/assertion/rewrite.py:283: in get_resource_reader from importlib.readers import FileReader E ModuleNotFoundError: No module named 'importlib.readers' If you'd like to see where this is happening on our CI, I'm pretty sure you can see the logs for the api-test stage here https://github.com/ansible/awx/runs/5072172116?check_suite_focus=true
Downgrading pytest fixes the issue, so it seems to a problem exclusively in 7.0.0 right now.
- a detailed description of the bug or problem you are having
- output of
pip listfrom the virtual environment you are using piplist.txt - pytest==7.0.0
- CentOS Stream release 9
- minimal example if possible
This minimal reproducer re-creates the error:
say we have broken.py with the following contents
from pip._internal.req import parse_requirements def test_broken(): assert True then running pytest broken.py results in
==================================================================================== test session starts ===================================================================================== platform linux -- Python 3.9.10, pytest-7.0.0, pluggy-1.0.0 django: settings: awx.settings.development (from ini) rootdir: /awx_devel, configfile: pytest.ini plugins: mock-1.11.1, forked-1.4.0, django-4.5.2, xdist-1.34.0, cov-3.0.0, timeout-2.1.0 collected 0 items / 1 error =========================================================================================== ERRORS =========================================================================================== _________________________________________________________________________________ ERROR collecting broken.py _________________________________________________________________________________ ImportError while importing test module '/awx_devel/broken.py'. Hint: make sure your test modules/packages have valid Python names. Traceback: /usr/lib64/python3.9/importlib/__init__.py:127: in import_module return _bootstrap._gcd_import(name[level:], package, level) broken.py:1: in <module> from pip._internal.req import parse_requirements /var/lib/awx/venv/awx/lib64/python3.9/site-packages/pip/_internal/req/__init__.py:5: in <module> from pip._internal.utils.logging import indent_log /var/lib/awx/venv/awx/lib64/python3.9/site-packages/pip/_internal/utils/logging.py:23: in <module> from pip._internal.exceptions import DiagnosticPipError /var/lib/awx/venv/awx/lib64/python3.9/site-packages/pip/_internal/exceptions.py:13: in <module> from pip._vendor.requests.models import Request, Response /var/lib/awx/venv/awx/lib64/python3.9/site-packages/pip/_vendor/requests/__init__.py:135: in <module> from . import utils /var/lib/awx/venv/awx/lib64/python3.9/site-packages/pip/_vendor/requests/utils.py:42: in <module> DEFAULT_CA_BUNDLE_PATH = certs.where() /var/lib/awx/venv/awx/lib64/python3.9/site-packages/pip/_vendor/certifi/core.py:50: in where _CACERT_CTX = get_path("pip._vendor.certifi", "cacert.pem") /usr/lib64/python3.9/importlib/resources.py:161: in path reader = _get_resource_reader(_get_package(package)) /usr/lib64/python3.9/importlib/resources.py:76: in _get_resource_reader spec.loader.get_resource_reader(spec.name)) E ModuleNotFoundError: No module named 'importlib.readers' ================================================================================== short test summary info =================================================================================== ERROR broken.py !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ================================================================================ 5 warnings, 1 error in 1.15s ================================================================================