Cerberus

GitHub Support CommunityData Validation

Cerberus provides powerful yet simple and lightweight data validation functionality out of the box and is designed to be easily extensible, allowing for custom validation. It has no dependencies and is thoroughly tested from Python 2.7 up to 3.8, PyPy and PyPy3.

Features

Class-based Custom Validators
Function-based Custom Validation

Official website

Tutorial and documentation

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