Beispiel

numpy.asarray copy parameter enforces strict zero-copy validation and controls memory sharing and subclass downcasting

sha256:0880b370832848505bdcf9f712552b384076319928506f5bf53a9957048646bc

Fall

Ziel

numpy.asarray copy parameter enforces strict zero-copy validation and controls memory sharing and subclass downcasting HOW

Pakete

numpy 2.5.2

Umgebung

python

Erstellt

2026-08-17T22:13:25Z

Häufige Annahme

numpy.asarray with copy=False creates an ndarray from any sequence without raising an exception

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

• numpy.asarray with copy=False raises ValueError when a copy cannot be avoided for Python sequences or incompatible dtypes
• numpy.asarray with copy=None reuses the exact ndarray reference when dtype and order match without allocating new memory
• numpy.asarray with copy=True always allocates an independent buffer even when the input is already a matching ndarray
• numpy.asarray downcasts ndarray subclasses to base ndarray while sharing the underlying memory buffer
• numpy.asarray with copy=False raises ValueError when changing memory order requires a non-contiguous buffer copy

Dateien

• NOTES.md
• csx.json
• requirements.txt
• 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