Describe the bug
OpenAI models cannot be properly generated. I mean they are generated, but then pydantic errors are raised.
Issue for discussion #2965
To Reproduce
OPENAPI_URL="https://app.stainless.com/api/spec/documented/openai/openapi.documented.yml"
OPENAPI_FILE="./openapi.documented.yml"
echo "Downloading OpenAPI spec from $OPENAPI_URL..."
curl -s --fail-with-body -o "$OPENAPI_FILE" "$OPENAPI_URL"
# Generate Python models using datamodel-code-generator
OUTPUT_FILE="./openapi_models.py"
echo "Generating Python models..."
# Run datamodel-code-generator with basic options similar to the main models
uv run datamodel-codegen \
--input "$OPENAPI_FILE" \
--output "$OUTPUT_FILE" \
--output-model-type pydantic_v2.BaseModel \
--formatters ruff-format \
--input-file-type openapiThen the models are generated, but when using them, I get this error:
_schema
raise PydanticUserError(
E pydantic.errors.PydanticUserError: Model 'FineTuningIntegration' needs field 'type' to be of type `Literal`
E
E For further information visit https://errors.pydantic.dev/2.12/u/discriminator-needs-literal
Expected behavior
Models are generated and usable
Version:
- OS: Ubuntu 24.04
- Python version: 3.13
- datamodel-code-generator version: v.0.53.0
Describe the bug
OpenAI models cannot be properly generated. I mean they are generated, but then pydantic errors are raised.
Issue for discussion #2965
To Reproduce
Then the models are generated, but when using them, I get this error:
Expected behavior
Models are generated and usable
Version: