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!
sudo port install py-checkdigit
pip install checkdigit
📦 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¶
- GS1 Standards
etc. (all fixed length numeric GS1 data structures with a check digit)
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!
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):
This project is licensed under GPL-3.0-or-later.