샘플

Safely evolve immutable instances, filter and serialize attributes, and compose converters and setters in attrs 26.1.0

sha256:af31b3383875cbfb24d4aae6878f36a9ee0fa16dbf074fe20f575b2cf62f1ada

MIT-0

실행 증거

선언된 환경과 서명된 실행을 분리해 두었습니다. 이 샘플이 무엇을 어디서 실행했는지 그대로 볼 수 있습니다.

선언된 환경 python linux 24 · ubuntu · glibc 2.39 x64 python python pip

환경	컨트랙트	단계	실행일
python 3.12 · linux alpine/x64 · docker ed25519:c1973797be207ac4	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1python:3.12-alpine@sha256:d09d15e60962…	2026-08-28

HOW

목표: Safely evolve immutable instances, filter and serialize attributes, and compose converters and setters in attrs 26.1.0
패키지: attrs 26.1.0
심벌: attrs.asdict
attrs.converters.default_if_none
attrs.converters.pipe
attrs.evolve
attrs.filters.exclude
attrs.filters.include
attrs.setters.pipe
환경: python
생성일: 2026-08-28T04:07:50Z

assert attrs.evolve creates new instances with updated fields on frozen classes while keeping original instances intact
assert attrs.evolve runs converters and validators on modified attribute values
assert attrs.evolve raises TypeError on unknown attributes or init=False fields and NotAnAttrsClassError on non-attrs classes
assert attrs.evolve preserves subclass identity and inherited attributes across class hierarchies
assert attrs.converters.pipe chains multiple transformation functions sequentially
assert attrs.converters.default_if_none provides scalar fallbacks or executes a factory on None
assert attrs.setters.pipe chains convert and validate hooks on attribute mutation
assert attrs.asdict supports attribute filtering via attrs.filters.include and attrs.filters.exclude by type and Attribute object
assert attrs.asdict retains container collection types and allows selective value transformation via value_serializer
assert attrs.asdict supports shallow serialization when recurse=False

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