aval

Abstract

Abstract Validator (AVal) is a class implemented in Python, capable of taking a list of specific validation strategies (with parameters), as well as a method for handling exceptional situations, and applying these methods to the validation object. The Abstract Validator can be used by calling the validation method on an instance of a class, as well as a decorator.

Installation

Use:

pip install aval

Basic usage

def _is_string(obj: v.VObj, params: v.VParams) -> None:
    t = type(obj)
    if t != str:
        raise v.ValidationError('Some description')

def _correct_length(obj: v.VObj, params: v.VParams) -> None:
    mn = params.get('min_length', 1)
    mx = params.get('max_length', 32)
    ln = len(obj)
    if not mn <= ln <= mx:
        raise v.ValidationError('Some description'
        )

vld = v.Validator([_is_string, _correct_length])
vld.validate('Any message')

Details

More detailed documentation (in Russian) can be found at https://docs.mxustin.ru/micro/validator/manual/intro