When I run pytest:
uv run pytest . -k "test_my_project" --cov=development/my_project
I receive the following report, with 1 warning:
========================= test session starts ====================================
platform win32 -- Python 3.13.5, pytest-8.4.1, pluggy-1.6.0
Using --random-order-bucket=global
Using --random-order-seed=449769
rootdir: D:\dev-python
configfile: pyproject.toml
plugins: cov-6.2.1, find-dependencies-0.6.0, mock-3.14.1, random-order-1.2.0,
syrupy-4.9.1
collected 4 items / 2 skipped / 2 selected
development\my_project\test_my_project.py .. [100%]
========================= warnings summary =======================================
.venv\Lib\site-packages\coverage\config.py:340
D:\dev-python\.venv\Lib\site-packages\coverage\config.py:340: CoverageWarning:
Unrecognized option '[tool.coverage.run] exclude_also='
in config file pyproject.toml
-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
========================= tests coverage ==========================================
__________________ coverage: platform win32, python 3.13.5-final-0 _______________
Name Stmts Miss Branch BrPart Cover Missing
---------------------------------------------------
TOTAL 92 0 8 0 100%
2 files skipped due to complete coverage.
========================= 2 passed, 2 skipped, 1 warning in 5.36s ================
Here is an excerpt from my pyproject.toml:
[tool.coverage.run]
branch = true
disable_warnings = ["module-not-imported"]
omit = [
"*/__main__.py",
"*/setup.py",
]
exclude_also = [
"\\# pragma: no cover\b",
"^\\s*raise AssertionError\b",
"^\\s*raise NotImplementedError\b",
"^\\s*return NotImplemented\b",
"^\\s*raise$",
"^\\s*if (False|TYPE_CHECKING):",
"if __name__ == '__main__':$",
]
[tool.coverage.report]
show_missing = true
skip_covered = true
sort="Cover"
From this question, I understand that exclude_also was introduced in version 7.2.0 of Coverage.py and that pytest-cov is just a wrapper around it.
When I run uv pip list, I get the following output:
Package Version
------------------------ ---------------
...
coverage 7.10.3
...
pytest 8.4.1
pytest-cov 6.2.1
pytest-find-dependencies 0.6.0
pytest-mock 3.14.1
pytest-random-order 1.2.0
...
Since my setup seems up-to-date, why am I receiving a warning anyway?
Coverage is warning because exclude_also is a report option, but you put it under [tool.coverage.run]. Move it to [tool.coverage.report] and the warning goes away:
[tool.coverage.run]
branch = true
disable_warnings = ["module-not-imported"]
omit = ["*/__main__.py","*/setup.py"]
[tool.coverage.report]
show_missing = true
skip_covered = true
sort = "Cover"
exclude_also = [
'\# pragma: no cover\b',
'^\s*raise AssertionError\b',
'^\s*raise NotImplementedError\b',
'^\s*return NotImplemented\b',
'^\s*raise$',
'^\s*if (False|TYPE_CHECKING):',
"if __name__ == '__main__':$",
]
make sure pytest is running the same coverage you think it is:
python -c "import coverage; print(coverage.__version__, coverage.__file__)"