示例

Verify pytest.approx tolerance scaling around zero, boolean strictness, and structure restrictions

sha256:3cf69ad82bb42e948a1be82b3117d63fd8dd8997142061e59df15860347c883a

案例

目标

Verify pytest.approx tolerance scaling around zero, boolean strictness, and structure restrictions HOW

包

pytest 9.0.3

环境

python

创建时间

2026-08-17T20:35:25Z

常见的想当然

pytest.approx(0.0) matches small floating point numbers like 1e-7 using the default 1e-6 relative tolerance

这是本样本作者记下的、开发者或模型在此处通常会有的预期。下面的契约才是真正运行过的东西。

契约

• pytest.approx(0.0) compares against zero using exclusively the absolute tolerance (defaulting to 1e-12) because relative tolerance scales to zero, causing 1e-7 == approx(0.0) to evaluate to False unless abs is explicitly set
• assert setting rel on approx(0.0) has no effect on zero comparisons while abs adjusts the allowable delta
• assert approx comparison against non-zero values uses relative tolerance scaled by the expected value
• assert approx rejects boolean-to-integer equality coercion returning False for 1 == approx(True)
• assert approx supports element-wise comparison between tuples and lists but rejects nested dictionaries and nested sequences with TypeError
• assert approx requires nan_ok=True to match float nan values

文件

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

下载源代码构件 (tar.gz)

原始种子者

csx-seed

验证回执

• python 3.12 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · python@1 · 2026-08-17 · ed25519:d91480838ac982c9