bryanchow/django-creditcard-fields — pull request #2 by vivekhas3 (2013-11-07 11:18:48+00:00)
Title: Added Luhn Algorithm Validation for card number

Hey, I have 2 years experience in python/Django. I would like to contribute to a few open source projects. I have added a feature to validate the credit card number using luhn algorithm and ensure it has the proper check sum.

For Example:
5544102470137580 this card number will clear the regex validation but will fail the luhn's check sum validation.

Thanks