datamodel-code-generator

Version updated for https://github.com/koxudaxi/datamodel-code-generator to version 0.50.0.

  • This action is used across all versions by 2,497 repositories.

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Action Summary

The datamodel-code-generator GitHub Action automates the generation of Python data models from various schema definitions such as OpenAPI 3, JSON Schema, GraphQL, and raw data formats (JSON/YAML/CSV). It simplifies the creation of type-safe, validated Python code, supporting Pydantic, dataclasses, TypedDict, and msgspec models, while handling complex schema structures like $ref, allOf, and enums. This tool is particularly useful for developers looking to streamline data modeling and ensure compatibility with IDEs and type checkers.

Release notes

Breaking Changes

Code Generation Changes

  • Models with unevaluatedProperties now generate extra field configuration - JSON Schemas containing unevaluatedProperties: false will now generate models with extra='forbid' (Pydantic v2) or extra = Extra.forbid (Pydantic v1), and schemas with unevaluatedProperties: true will generate extra='allow'. Previously this keyword was ignored. This may cause validation errors for data that was previously accepted. (#2797) Example - a schema like:
    {
  "title": "Resource",
  "type": "object",
  "properties": { "name": { "type": "string" } },
  "unevaluatedProperties": false
}
    Previously generated:
    class Resource(BaseModel):
    name: str | None = None
    Now generates:
    class Resource(BaseModel):
    model_config = ConfigDict(extra='forbid')
    name: str | None = None

Default Behavior Changes

  • Default encoding changed from system locale to UTF-8 - The default encoding for reading input files and writing output is now always utf-8 instead of the system’s locale-preferred encoding (e.g., cp1252 on Windows). Users who rely on locale-specific encoding must now explicitly use --encoding to specify their desired encoding (#2802)

What’s Changed

New Contributors

Full Changelog: https://github.com/koxudaxi/datamodel-code-generator/compare/0.49.0...0.50.0