Lock dependencies with Python 3.15 wheels

[Koudai Aono (koxudaxi)]

Summary by CodeRabbit

• New Features
  • Added Python 3.15 as a supported target for generated code.
  • Updated preset documentation to reflect the available Python targets.
• Compatibility
  • Updated formatting and validation support for Python 3.15 and adjusted package requirements across supported Python versions.

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Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-15T15:43:50.918751Z	a7ee5b2	PR opened

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📥 Commits

Reviewing files that changed from the base of the PR and between 213ff2c and a7ee5b2.

⛔ Files ignored due to path filters: 12

• docs/llms-full.txt is excluded by none and included by none
• skills/datamodel-code-generator/references/cli-options.md is excluded by none and included by none
• tests/data/expected/main/help/color.txt is excluded by !tests/data/**/*.txt and included by none
• tests/data/expected/main/help/no_color.txt is excluded by !tests/data/**/*.txt and included by none
• tests/data/expected/main_kr/generate_prompt/basic.txt is excluded by !tests/data/**/*.txt and included by none
• tests/data/expected/main_kr/generate_prompt/json_output.txt is excluded by !tests/data/**/*.txt and included by none
• tests/data/expected/main_kr/generate_prompt/with_list_options.txt is excluded by !tests/data/**/*.txt and included by none
• tests/data/expected/main_kr/generate_prompt/with_options.txt is excluded by !tests/data/**/*.txt and included by none
• tests/data/expected/main_kr/generate_prompt/with_question.txt is excluded by !tests/data/**/*.txt and included by none
• tests/data/expected/main_kr/help_shows_new_options.txt is excluded by !tests/data/**/*.txt and included by none
• tests/data/expected/package_metadata/formatter_extras.txt is excluded by !tests/data/**/*.txt and included by none
• uv.lock is excluded by !**/*.lock, !**/*.lock and included by none

📒 Files selected for processing: 8

• .pre-commit-config.yaml
• docs/dependency-migration.md
• pyproject.toml
• src/datamodel_code_generator/_format_types.py
• src/datamodel_code_generator/preset.py
• tests/data/expected/main/input_model/config_class.py
• tests/main/jsonschema/test_main_jsonschema.py
• tests/test_package_metadata.py

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📝 Walkthrough

The project adds Python 3.15 support to its version metadata and splits formatter and Pydantic requirements by Python version. The Python version target enum, preset target matrix, and related tests also include updates.

Changes: Python 3.15 support

Layer / File(s)	Summary
Version support and dependency requirements pyproject.toml, .pre-commit-config.yaml, docs/dependency-migration.md	Project metadata adds Python 3.15 and sets Python-version-specific Black and Pydantic requirements. The formatter dependency groups and pre-commit configuration also distinguish Python versions. The migration documentation reflects the version ranges.
Python version targets and tests src/datamodel_code_generator/_format_types.py, src/datamodel_code_generator/preset.py, tests/data/expected/main/input_model/config_class.py, tests/main/jsonschema/test_main_jsonschema.py, tests/test_package_metadata.py	The Python version enum and expected config type include 3.15. The preset matrix iterates over standard preset mappings. Tests select fixture suffixes by deferred annotation support and check all matching formatter requirements.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Feature

Merge Risk: ⚪ Minimal · up to a7ee5

This change adds Python 3.15 as a supported target and splits dependency requirements by Python version. No concrete merge-blocking problem was established in the supplied context.

Pre-merge checks: 5

Passed checks: 5 passed

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly describes the main change: dependency updates to support Python 3.15 wheels and requirements.
Docstring Coverage		Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 4 files. (4 skipped: 3 …
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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[codspeed]

Merging this PR will not alter performance

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

✅ 49 untouched benchmarks
⏩ 98 skipped benchmarks¹

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_{Comparing py315-dependencies (c825bde) with main (0afa003)}

Footnotes

1. 98 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

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Codecov Report

✅ All modified and coverable lines are covered by tests.

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[github-actions]

📚 Docs Preview: https://pr-4766.datamodel-code-generator.pages.dev

[github-actions]

Breaking Change Analysis

Result: No breaking changes detected

Reasoning: This PR adds Python 3.15 support. It adds the Python 3.15 classifier to pyproject.toml and bumps the pre-commit pyproject-fmt max-supported-python to 3.15. The black dependency, both required and in the black extra, is now split by Python version: versions below 3.15 keep the existing 19.10b0 minimum, and Python 3.15 and later requires black 26.5 or newer. The pydantic requirement is also split: Python 3.14 keeps the 2.12 minimum, Python 3.15 and later requires pydantic 2.14 or newer, and versions below 3.14 are unchanged. The black22 and black24 dev dependency groups are limited to Python below 3.15. The other changes are documentation tables, the updated expected package-metadata test fixture, a test that now joins multiple required specifiers, and uv.lock churn (new markers, an added black 26.10.1 entry, and version bumps for cffi, grpcio, markupsafe, msgspec, protobuf, rpds-py, time-machine and watchfiles). Requirements for every Python version below 3.15 are unchanged. The tighter minimums apply only to the newly supported Python 3.15, so existing users are not affected. Nothing changes generated code output, templates, CLI options, the Python API, defaults, error handling, or the set of supported Python versions.

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This analysis was produced by the release draft workflow

[github-actions]

🎉 Released in 0.85.0

This PR is now available in the latest release. See the release notes for details.