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Check the value both type and value and then constraint it.

Project description

doCheck

Introduction

doCheck is an open-source type checking module written in Python, released under the Mulan Permissive Software License v2 (MulanPSL-2.0). This module provides a set of reusable Checker classes for validating properties and conditions of different types of values.

Installation

pip install doCheck

Features

  • Provides various logical operator overload methods such as intersection, union, complement, negation, etc., for composing complex data validation rules.
  • Includes LiteralChecker (also known as EnumChecker) to check if a value is in a predefined list.
  • TypeChecker is used to validate if a value belongs to a specific collection of data types.
  • RangeChecker supports conditional checks within a numeric range and allows customization of interval closure.
  • Additionally, CallableChecker and RegexChecker are provided to check if a value is a callable object and if a string matches a regular expression, respectively.

Usage Example

import doCheck as dc

# Create checker instances
is_integer = dc.TypeChecker(int)
is_even = dc.RangeChecker(0, float('inf'), leftClosed=True, step=2)
is_valid_name = dc.RegexChecker(r'^[A-Za-z]+\s[A-Za-z]+$')

# Apply checkers
print(is_integer.check(42))  # Output: True
print(is_even.check(10))     # Output: True
print(is_valid_name.check("John Doe"))  # Output: True

License

doCheck module is licensed under the Mulan Permissive Software License v2.0. For more information about this license, please visit: https://opensource.org/license/mulanpsl-2-0/

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Note: To use this module, make sure to import it correctly and comply with the relevant open-source license terms.

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