示例

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

sha256:077123e3da7f317dd9d5939283b6bc716d114ee253a897590ad49ced1aa06422

案例

目标

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

包

pydantic 2.13.4

环境

python

创建时间

2026-08-17T06:52:40Z

常见的想当然

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

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

• 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.

文件

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