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pytest 9.0.3: Verify pytest.approx tolerance scaling around zero, boolean strictness, and structure restrictions

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선언된 환경 python linux x64 python python pip

환경	컨트랙트	단계	실행일
python 3.12 · linux alpine/x64 · docker ed25519:d91480838ac982c9	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1	2026-08-17
python 3.12 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1	2026-08-18

HOW

목표: Verify pytest.approx tolerance scaling around zero, boolean strictness, and structure restrictions
패키지: pytest 9.0.3
심벌: pytest.approx
환경: python
생성일: 2026-08-17T20:35:25Z

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