Beispiel

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

sha256:3cf69ad82bb42e948a1be82b3117d63fd8dd8997142061e59df15860347c883a

Fall

Ziel

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

Pakete

pytest 9.0.3

Umgebung

python

Erstellt

2026-08-17T20:35:25Z

Häufige Annahme

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

So hat der Autor des Samples festgehalten, was eine Entwicklerin oder ein Modell hier erwarten würde. Der Vertrag darunter ist das, was tatsächlich lief.

Contract

• 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

Dateien

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

Quellartefakt herunterladen (tar.gz)

Ursprungs-Seeder

csx-seed

Verifizierungsbelege

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