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This adds an initial [tool.mypy] section to pyproject.toml which checks modules which have no typing errors. We set python_version = "3.7" to ensure we are always checking against the syntax and stdlib of our lowest supported Python version. This also adds mypy to requirements.txt for development.
This also updates the single() implementation, replacing the use of _SENTINEL as a nothing-to-return marker with a separate bool variable. Note that we need to use both collections.abc.Iterable (for isinstance()) and typing.Iterable (for type annotation) until Python 3.9 (#265). If we attempt to use the former for type annotation in Python < 3.9, we get the following error: TypeError: 'ABCMeta' object is not subscriptable This also simplifies coerce_sequence() to always return a list, removing the return-type argument.
This updates git_describe() to return Optional[GitDescribe] to simplify typing. The whole file looks much closer now to this (and in some ways better): https://github.com/JonathonReinhart/scuba/blob/18135bb19a/scuba/version.py This also adds importlib-metadata to requirements.txt for development. This is because even though we're running with Python 3.11 on Debian 12, we specify python_version = "3.8" in pyproject.toml, which means the backport is needed for type checking.
For some reason, running mypy v1.8.0 --python-version=3.8 in a Python 3.11 venv doesn't pick up the importlib_resources types, even when the (runtime-unnecessary) importlib-resources package is installed, so we have to add a cast.
Also take the opportunity to clean up some wildcard imports.
One slightly annoying issue is that I like to set attributes to None in close() after they've been closed. But this requires marking their types as Optional, which requires checking that they are not None where they are used. A well-polished API would check and raise a "closed" exception. For now, we just assert. This also fixes #278.
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We also add types-pyinstaller to requirements.txt.
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Any idea when we might get this PR? I think this might fix my "Invalid ELF image: Magic number does not match" issue. |
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