tox is happy
```
-- Docs: https://docs.pytest.org/en/latest/warnings.html
===================================================================================== 912 passed, 23 skipped, 1 xfailed, 18 warnings in 249.27s (0:04:09) =====================================================================================
___________________________________________________________________________________________________________________ summary ___________________________________________________________________________________________________________________
black: commands succeeded
flake8: commands succeeded
mypy: commands succeeded
py3: commands succeeded
congratulations :)
```