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Optional static typing for Python
Now we can narrow `@final` types with `is` and `is not`. Closes #15553
It would be nice to make a release. It's been about two months since 1.11. We have a couple nice changes in there and it'd be great to release a...
Fixes https://github.com/mypyc/mypyc/issues/1071 Adds a test to cover this case Building certain package layouts now succeeds instead of failing. The behavior for all package layouts not affected by the error is...
``` λ mypy --version mypy 1.11.2 (compiled: yes) λ uv pip show torch Using Python 3.11.8 environment at /Users/shantanu/.virtualenvs/openai-wfht Name: torch Version: 2.1.0 Location: /Users/shantanu/.virtualenvs/openai-wfht/lib/python3.11/site-packages Requires: filelock, fsspec, jinja2, networkx,...
**Bug Report** In 1.11.0, classes that inherit from os.PathLike could be used with `os.path` methods. As of 3.12, these methods claim to accept "any object implementing the [os.PathLike](https://docs.python.org/3.12/library/os.html#os.PathLike) protocol". However,...
**Bug Report** I see there is some work ongoing for adding PEP 695 support. Creating this issue to track support in `stubgen`. **To Reproduce** Run `stubgen` for: ```python type ListOrSet[T]...
**Bug Report** When decorating an empty method ("`...`") inside of a `Protocol` definition as an `asynccontextmanager`, the type checker insists that the return type must use `Never` instead of allowing...
This PR introduce to mypyc the ability to generate efficient classes passed by value unleashing deeper optimizations in the C generated code. With this change mypyc will be finding immutable...
**Bug Report** > `mypy_arg_type.py`: ``` import numpy as np from numpy.typing import NDArray import random def winner(_: NDArray[np.bytes_]) -> bytes | None: return b"." if bool(random.randint(0, 1)) else None board...
