pydantic-v2-strict

What problem does it solve?

Pydantic V2 strict mode enforces type-safety by eliminating implicit type coercion across all models, preventing silent bugs in data handling.

Core Features & Use Cases

• Use ConfigDict(strict=True, frozen=True, extra='forbid', validate_assignment=True) to configure models for strict validation, immutability, and strict field handling.
• Use Field() for constraints and metadata to enforce data quality and self-documenting models.
• Facilitate migration from Pydantic 1 to 2 by embracing new validators (@field_validator, @model_validator) and removing legacy patterns.
• Enforce data contracts and DTOs across services with explicit, predictable serialization and validation behavior.

Quick Start

Create a strict-mode Pydantic V2 model by using ConfigDict and Field constraints, then validate inputs with model_validate to guarantee exact types.