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Pydantic

validation

Data validation using Python type hints

15M/week ↑ Growing

Features

validationserializationtype-hintsdata

Pros and Cons

Ventajas

  • + Type hints-based validation
  • + Automatic serialization/deserialization
  • + Excellent error messages
  • + Improved performance in v2 with Rust
  • + Perfect integration with FastAPI

Desventajas

  • - Performance overhead vs dataclasses
  • - Can be overkill for simple cases
  • - Breaking changes between v1 and v2

Use Cases

  • API input validation
  • Application configuration
  • External data parsing
  • Typed domain models
  • JSON serialization

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