Beispiel

Enforce default field validation and type coercion in Pydantic models by explicitly configuring validate_default

sha256:077123e3da7f317dd9d5939283b6bc716d114ee253a897590ad49ced1aa06422

Fall

Ziel

Enforce default field validation and type coercion in Pydantic models by explicitly configuring validate_default HOW

Pakete

pydantic 2.13.4

Umgebung

python

Erstellt

2026-08-17T06:52:40Z

Häufige Annahme

Pydantic models validate and coerce all field defaults against annotated types and constraints during default instantiation.

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

• Leaving validate_default unset defaults to False: uncoerced string defaults remain raw strings and constraint-violating defaults are assigned directly without validation errors.
• Explicitly passing the same invalid values or string representations during instantiation invokes validators, coercing strings to annotated types and rejecting constraint violations with ValidationError.
• Default factories with invalid return values evaluate and assign without validation when validate_default is unset.
• Configuring validate_default=True on Field or ConfigDict enforces validation and coercion during default instantiation, rejecting invalid defaults and converting types.

Dateien

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