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checkdigit is a pure Python library built for identification numbers. You want to validate a credit card number, or maybe even calculate a missing digit on an ISBN code? We’ve got you covered 😎.

Want to know more? Check out the API Reference and documentation!

Installation¶

MacPorts 🍎¶

sudo port install py-checkdigit

PyPi 🐍¶

pip install checkdigit

✨ Features¶

  • 📦 Works out of the box with all supported Python versions (3.7-3.11).

  • ⌨️ PEP 561 compatible, with built in support for type checking.

  • 🏃 Zero runtime dependencies. What you see is what you get.

  • 🧮 Capable of calculating missing digits or validating a block of data.

  • 📝 Extensive in-code comments and docstrings to explain how it works behind the scenes.

✅ Supported Formats¶

For each of these formats, we provide functions to validate them and calculate missing digits.

Do you have any formats that you’d like to see supported? 🤔 Feel free to raise an issue, or even to send a pull request!

✨ Contributors¶

This project follows the all-contributors specification. Contributions of any kind are welcome!

Want to help out? Check out the contributing page.

Thanks goes to these wonderful people (emoji key):


Timothy Langer

⚠️ 📖

Charlie Wilson

💻 ⚠️

Max Bowman

💻 ⚠️

Mohsen BANAN

🐛

📙 License¶

This project is licensed under GPL-3.0-or-later.