pydantic-patterns

What problem does it solve?

Pydantic v2 patterns provide a comprehensive toolkit for data validation and serialization in Python applications, enabling consistent contracts across APIs, services, and data stores.

Core Features & Use Cases

• Data modeling with BaseModel and model_config, including ORM mode and integration with FastAPI/SQLAlchemy.
• Validation primitives: field_validator and model_validator to enforce data quality and cross-field constraints.
• Computed fields and advanced serialization control via computed_field and model_dump customization.
• Discriminated unions and custom types for flexible, robust API payloads and data transformations.
• Nested models, settings management, and seamless ORM/DB integration to reduce boilerplate.

Quick Start

Define Pydantic v2 models and validators in your project to validate API inputs, transform data, and serialize responses.