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Bump mypy from 1.18.1 to 1.18.2#262

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dependabot/pip/mypy-1.18.2
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Bump mypy from 1.18.1 to 1.18.2#262
docktermj merged 2 commits into
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dependabot/pip/mypy-1.18.2

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@dependabot dependabot Bot commented on behalf of github Sep 19, 2025

⚠️ Dependabot is rebasing this PR ⚠️

Rebasing might not happen immediately, so don't worry if this takes some time.

Note: if you make any changes to this PR yourself, they will take precedence over the rebase.


Bumps mypy from 1.18.1 to 1.18.2.

Changelog

Sourced from mypy's changelog.

Mypy 1.18.1

We’ve just uploaded mypy 1.18.1 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.

Mypy Performance Improvements

Mypy 1.18.1 includes numerous performance improvements, resulting in about 40% speedup compared to 1.17 when type checking mypy itself. In extreme cases, the improvement can be 10x or higher. The list below is an overview of the various mypy optimizations. Many mypyc improvements (discussed in a separate section below) also improve performance.

Type caching optimizations have a small risk of causing regressions. When reporting issues with unexpected inferred types, please also check if --disable-expression-cache will work around the issue, as it turns off some of these optimizations.

  • Improve self check performance by 1.8% (Jukka Lehtosalo, PR 19768, 19769, 19770)
  • Optimize fixed-format deserialization (Ivan Levkivskyi, PR 19765)
  • Use macros to optimize fixed-format deserialization (Ivan Levkivskyi, PR 19757)
  • Two additional micro‑optimizations (Ivan Levkivskyi, PR 19627)
  • Another set of micro‑optimizations (Ivan Levkivskyi, PR 19633)
  • Cache common types (Ivan Levkivskyi, PR 19621)
  • Skip more method bodies in third‑party libraries for speed (Ivan Levkivskyi, PR 19586)
  • Simplify the representation of callable types (Ivan Levkivskyi, PR 19580)
  • Add cache for types of some expressions (Ivan Levkivskyi, PR 19505)
  • Use cache for dictionary expressions (Ivan Levkivskyi, PR 19536)
  • Use cache for binary operations (Ivan Levkivskyi, PR 19523)
  • Cache types of type objects (Ivan Levkivskyi, PR 19514)
  • Avoid duplicate work when checking boolean operations (Ivan Levkivskyi, PR 19515)
  • Optimize generic inference passes (Ivan Levkivskyi, PR 19501)
  • Speed up the default plugin (Jukka Lehtosalo, PRs 19385 and 19462)
  • Remove nested imports from the default plugin (Ivan Levkivskyi, PR 19388)
  • Micro‑optimize type expansion (Jukka Lehtosalo, PR 19461)
  • Micro‑optimize type indirection (Jukka Lehtosalo, PR 19460)
  • Micro‑optimize the plugin framework (Jukka Lehtosalo, PR 19464)
  • Avoid temporary set creation in subtype checking (Jukka Lehtosalo, PR 19463)
  • Subtype checking micro‑optimization (Jukka Lehtosalo, PR 19384)
  • Return early where possible in subtype check (Stanislav Terliakov, PR 19400)
  • Deduplicate some types before joining (Stanislav Terliakov, PR 19409)
  • Speed up type checking by caching argument inference context (Jukka Lehtosalo, PR 19323)
  • Optimize binding method self argument type and deprecation checks (Ivan Levkivskyi, PR 19556)
  • Keep trivial instance types/aliases during expansion (Ivan Levkivskyi, PR 19543)

Fixed‑Format Cache (Experimental)

... (truncated)

Commits
  • df05f05 remove +dev from version
  • 01a7a12 Update changelog for 1.18.2 (#19873)
  • ca5abf0 Typeshed cherry-pick: Make type of unitest.mock.Any a subclass of Any (#1...
  • 9d794b5 [mypyc] fix: inappropriate Nones in f-strings (#19846)
  • 2c0510c stubtest: additional guidance on errors when runtime is object.init (#19733)
  • 2f3f03c Bump version to 1.18.2+dev for point release
  • 7669841 Fix crash on recursive alias in indirection.py (#19845)
  • See full diff in compare view

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Bumps [mypy](https://github.com/python/mypy) from 1.18.1 to 1.18.2.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.18.1...v1.18.2)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 1.18.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot Bot added dependencies Pull requests that update a dependency file python python programming languagae labels Sep 19, 2025
@dependabot dependabot Bot requested a review from a team as a code owner September 19, 2025 22:08
@dependabot dependabot Bot added python python programming languagae dependencies Pull requests that update a dependency file labels Sep 19, 2025
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Automated: approving this pull request because it includes a patch update

@github-actions github-actions Bot enabled auto-merge (squash) September 19, 2025 22:09
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🛡️ Bandit Scan Results Summary

We found 2 High, 2 Medium, and 1 Low severity issues.

Detailed Findings


Severity Issue File Line Confidence More Info Test ID
🟡 LOW Consider possible security implications associated with the subprocess module. sz_tools/_tool_helpers.py 10 HIGH More Info B404
⚪ MEDIUM Possible SQL injection vector through string-based query construction. sz_tools/_sz_database.py 352 LOW More Info B608
⚪ MEDIUM Probable insecure usage of temp file/directory. sz_tools/_tool_helpers.py 732 MEDIUM More Info B108
🔴 HIGH Starting a process with a shell, possible injection detected, security issue. sz_tools/_tool_helpers.py 658 HIGH More Info B605
🔴 HIGH subprocess call with shell=True identified, security issue. sz_tools/_tool_helpers.py 642 HIGH More Info B602

✨ About this Report

This report was generated by the official Bandit GitHub Action to ensure our codebase stays secure.

📕 What is Bandit?

Bandit is a tool designed to find common security issues in Python code. To learn more about how Bandit helps to keep Python code safe, visit the Bandit documentation.

👥 Community Support

Got questions or need help with Bandit Action?

  • Join our community on the Discord server.
  • Share tips, get advice, and collaborate on security best practices.

@docktermj docktermj self-assigned this Sep 22, 2025
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🛡️ Bandit Scan Results Summary

We found 2 High, 2 Medium, and 1 Low severity issues.

Detailed Findings


Severity Issue File Line Confidence More Info Test ID
🟡 LOW Consider possible security implications associated with the subprocess module. sz_tools/_tool_helpers.py 10 HIGH More Info B404
⚪ MEDIUM Possible SQL injection vector through string-based query construction. sz_tools/_sz_database.py 352 LOW More Info B608
⚪ MEDIUM Probable insecure usage of temp file/directory. sz_tools/_tool_helpers.py 732 MEDIUM More Info B108
🔴 HIGH Starting a process with a shell, possible injection detected, security issue. sz_tools/_tool_helpers.py 658 HIGH More Info B605
🔴 HIGH subprocess call with shell=True identified, security issue. sz_tools/_tool_helpers.py 642 HIGH More Info B602

✨ About this Report

This report was generated by the official Bandit GitHub Action to ensure our codebase stays secure.

📕 What is Bandit?

Bandit is a tool designed to find common security issues in Python code. To learn more about how Bandit helps to keep Python code safe, visit the Bandit documentation.

👥 Community Support

Got questions or need help with Bandit Action?

  • Join our community on the Discord server.
  • Share tips, get advice, and collaborate on security best practices.

@docktermj docktermj disabled auto-merge September 22, 2025 13:23
@docktermj docktermj merged commit 16e1e94 into main Sep 22, 2025
31 of 94 checks passed
@docktermj docktermj deleted the dependabot/pip/mypy-1.18.2 branch September 22, 2025 13:23
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