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build(deps): Bump mypy from 1.20.0 to 2.1.0#342

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build(deps): Bump mypy from 1.20.0 to 2.1.0#342
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@dependabot dependabot Bot commented on behalf of github May 19, 2026

Bumps mypy from 1.20.0 to 2.1.0.

Changelog

Sourced from mypy's changelog.

Mypy Release Notes

Next Release

Mypy 2.1

We’ve just uploaded mypy 2.1.0 to the Python Package Index (PyPI). Mypy is a static type checker for Python. This release includes new features, performance improvements and bug fixes. You can install it as follows:

python3 -m pip install -U mypy

You can read the full documentation for this release on Read the Docs.

librt.vecs: Fast Growable Array Type for Mypyc

The new librt.vecs module provides an efficient growable array type vec that is optimized for mypyc use. It provides fast, packed arrays with integer and floating point value types, which can be several times faster than list, and tens of times faster than array.array in code compiled using mypyc. It also supports nested vec objects and non-value-type items, such as vec[vec[str]].

Refer to the documentation for the details.

Contributed by Jukka Lehtosalo.

librt.random: Fast Pseudo-Random Number Generation

The new librt.random module provides fast pseudo-random number generation that is optimized for code compiled using mypyc. It can be 3x to 10x faster than the stdlib random module in compiled code.

Refer to the documentation for the details.

Contributed by Jukka Lehtosalo (PR 21433).

Mypyc Improvements

  • Make compilation order with multiple files consistent (Piotr Sawicki, PR 21419)
  • Fix crash on accessing StopAsyncIteration (Piotr Sawicki, PR 21406)
  • Fix incremental compilation with separate flag (Vaggelis Danias, PR 21299)

Fixes to Crashes

  • Fix crash on partial type with --allow-redefinition and global declaration (Jukka Lehtosalo, PR 21428)
  • Fix broken awaitable generator patching (Ivan Levkivskyi, PR 21435)

Changes to Messages

... (truncated)

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Bumps [mypy](https://github.com/python/mypy) from 1.20.0 to 2.1.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.20.0...v2.1.0)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 2.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
@dependabot dependabot Bot added dependencies Pull requests that update a dependency file python Pull requests that update python code labels May 19, 2026
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@dependabot merge

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Up to standards ✅

🟢 Issues 0 issues

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0 new issues

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🟢 Metrics 0 duplication

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AI Reviewer: first review requested successfully. AI can make mistakes. Always validate suggestions.

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TIP This summary will be updated as you push new changes.

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Pull Request Overview

Codacy analysis indicates that the update is up to standards. Because this is a major version upgrade for the project's static type checker, it is essential to verify that no new type errors have been introduced into the codebase, as these would likely cause build failures in subsequent PRs.

Test suggestions

  • Execute static type checking using mypy 2.1.0 on the existing codebase to ensure compatibility and identify any new type errors introduced by the major version upgrade.
Prompt proposal for missing tests
Consider implementing these tests if applicable:
1. Execute static type checking using mypy 2.1.0 on the existing codebase to ensure compatibility and identify any new type errors introduced by the major version upgrade.

TIP Improve review quality by adding custom instructions
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