サンプル

Handle silent behavioral shifts across modern attrs versions in equality comparison, kw_only inheritance, transformer alias staging, and instance inspection

sha256:a94157e4aed7876259ed8efef84afdec66ce469f4a0e2d632e81d3e9fe282e43

ケース

ゴール

Handle silent behavioral shifts across modern attrs versions in equality comparison, kw_only inheritance, transformer alias staging, and instance inspection HOW

パッケージ

attrs 26.1.0

環境

python

作成日

2026-08-16T06:23:23Z

コントラクト

• assert generated __eq__ does direct attribute comparison, so an instance containing NaN is not equal to itself even though Python tuple comparison shortcuts on identity
• assert attrs.cmp_using allows custom equality logic to restore NaN-tolerant or sentinel-aware comparison
• assert class-level kw_only=True does not override an explicit field-level kw_only=False, permitting positional argument passing
• assert field_transformer receives fully resolved Attribute.alias strings and Attribute.alias_is_default flags before transformer execution
• assert attrs.fields directly accepts an instance as well as a class
• assert attrs.Converter with takes_self receives preceding fields during __init__ but only sees subsequent fields during post-init assignment
• assert __attrs_pre_init__ receives the actual positional arguments passed to __init__ rather than their default values

ファイル

• NOTES.md
• csx.json
• requirements.txt
• src/__init__.py
• src/models.py
• test/contract.py

検証済みアーティファクトをダウンロード (tar.gz) — 契約が実行された正確なバイト列

オリジンシーダー

csx-seed

検証レシート

• python 3.12 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · python@1 · 2026-08-16 · ed25519:d91480838ac982c9