Python type stubs testing #1
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TimothyEDawson
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Only raise deprecation warnings if npos or -1 is expected, and the new 'raise' argument is needed.
Prevents future changes in the CLib code despite changes in the C++ API.
TimothyEDawson
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Adding stubs alongside the Python files to provide type hints for external use. These are intended to cover the public interface, including all dynamically-generated attributes.
Moved literal_type_guard to a new _types.py file and added a new function add_args_to_signature. Made several minor typing improvements in the course of updating yaml2ck.py.
Only numpy.typing.ArrayLike needs to be explicitly exported, which can be achieved with the `from X import Y as Y` syntax.
TODO: Update add_args_to_signature to support TypeForm[T] instead of only type[T] so it can properly accept e.g. Iterable[str].
Includes an initial whitelist to make stubtest pass located at interfaces/cython/.mypyignore, which should be reduced to the minimal set of items which cannot be correctly inferred at runtime (e.g. __cinit__ signatures).
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Pull request for testing CI changes.