pythonasyncioapiasyncfastapiframeworkjsonjson-schemaopenapiopenapi3pydanticpython-typespython3redocreststarletteswaggerswagger-uiuvicornweb
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1a43eb08cf
401-instead-of-403
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add-tests-for-parameter-defaults
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feature/python-tests-t
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fix-response_model_---parameters-with-Iterable
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v0.1.16
${ noResults }
tiangolo.fastapi/fastapi/dependencies
Navid Nabavi
1a43eb08cf
When a request parameter has an immutable default (None, int, str, bytes, bool) deepcopy is unnecessary — these types cannot be mutated. Skip it by checking isinstance(default, _IMMUTABLE_TYPES) before copying. When default_factory is set, the factory already produces a fresh object on every call. Deepcopying that fresh object is redundant. Call field.get_default() directly (which routes through Pydantic's FieldInfo.get_default(call_default_factory=True)) and return without copying. Benchmarked at 50k requests × 5 runs: endpoints using default_factory on list/dict params show ~31% latency reduction. Immutable-default savings (~250ns/param) are real but below measurement threshold end-to-end. |
2 weeks ago | |
|---|---|---|
| .. | ||
| __init__.py | ♻️ Refactor, fix and update code | 8 years ago |
| models.py | 🎨 Update internal types for Python 3.10 (#14898) | 4 months ago |
| utils.py | perf: skip deepcopy for immutable defaults and default_factory params | 2 weeks ago |