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Address comments + section for analyzing untyped modules
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svalentin committed Dec 18, 2024
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## Mypy 1.14 (unreleased)

We’ve just uploaded mypy 1.14 to the Python Package Index ([PyPI](https://pypi.org/project/mypy/)). Mypy is a static type
checker for Python. This release includes new features, performance improvements and bug fixes.
checker for Python. This release includes new features and bug fixes.
You can install it as follows:

python3 -m pip install -U mypy
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### Added support for @deprecated decorator (PEP 702)

Mypy can now issue errors or notes when code imports a deprecated feature
explicitly with a `from mod import depr` statement, uses a deprecated feature
explicitly with a `from mod import depr` statement, or uses a deprecated feature
imported otherwise or defined locally. Features are considered deprecated when
decorated with `warnings.deprecated`, as specified in [PEP 702](https://peps.python.org/pep-0702).

You can enable the error code via `--enable-error-code=deprecated` on the mypy
command line or `enable_error_code = deprecated` in the mypy config file.
Use the option `--report-deprecated-as-note` to turn all such errors into notes.

Will be enabled by default in a future mypy version.
Deprecation errors will be enabled by default in a future mypy version.

Contributed by Christoph Tyralla

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* PEP 702 (@deprecated): improve the handling of explicit type annotations of assignment statements (Christoph Tyralla, PR [17899](https://github.com/python/mypy/pull/17899))
* Add basic support for PEP 702 (@deprecated). (Christoph Tyralla, PR [17476](https://github.com/python/mypy/pull/17476))

### Mypy can be configured to analyze untyped modules

Mypy normally doesn't analyze imports from modules without stubs or a py.typed marker.
To force mypy to analyze these imports you can now set the `--follow-untyped-imports` command line
flag or the `follow_untyped_imports` config file option to True. This can be set either in the
global section of your mypy config file, or individually on a per-module basis.

Contributed by Jannick Kremer

List of changes:
* Implement flag to allow typechecking of untyped modules (Jannick Kremer, PR [17712](https://github.com/python/mypy/pull/17712))
* Warn about --follow-untyped-imports (Shantanu, PR [18249](https://github.com/python/mypy/pull/18249))

### Mypyc Improvements

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### Other Notables Fixes and Improvements

* Implement flag to allow typechecking of untyped modules (Jannick Kremer, PR [17712](https://github.com/python/mypy/pull/17712))
* Show Protocol __call__ for arguments with incompatible types (MechanicalConstruct, PR [18214](https://github.com/python/mypy/pull/18214))
* Show `Protocol` `__call__` for arguments with incompatible types (MechanicalConstruct, PR [18214](https://github.com/python/mypy/pull/18214))
* Make join and meet symmetric with strict_optional (MechanicalConstruct, PR [18227](https://github.com/python/mypy/pull/18227))
* Preserve block unreachablility when checking function definitions with constrained TypeVars (Brian Schubert, PR [18217](https://github.com/python/mypy/pull/18217))
* Do not include non-init fields in the synthesized `__replace__` method for dataclasses (Victorien, PR [18221](https://github.com/python/mypy/pull/18221))
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