Project #05: Building a Credit Card Number Validation Program | Python Coding for Beginners

In this project, you'll use Luhn algorithm to validate credit card numers. This project looks simple but it involves many basic techniques and concepts: data types conversion, list and string manipulation, regular expressions, input validation... Hope it helps you improve your Python basic skill

For your convenience, I include some valid card numbers for you to input and see how your program works:
Amex
374245455400126
378282246310005

Discover
6011000991300009
6011111111111117
6011000990139424

JCB
3566000020000410
3530111333300000

Mastercard
5425233430109903

Visa
4263982640269299
4917484589897107

Diners Club
30569309025904
38520000023237

Visa: Card numbers start with a 4.
MasterCard: Card numbers start with the numbers 51 through 55.
Diners Club: Card numbers begin with 36 or 38. (There are Diners Club cards that begin with 5. These are a joint venture between Diners Club and MasterCard, and are processed like a MasterCard.)
Discover: Card numbers begin with 6011 or 65.
Japan Credit Bureau (JCB): Card numbers begin with 35.
American Express (Amex): Card numbers beginning with 34 or 37.

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[makeeverydayezday]

For your convenience, I include some valid card numbers for you to input and see how your program works:
Amex:
374245455400126
378282246310005

Discover:
6011000991300009

6011000990139424

JCB:
3566000020000410


Mastercard:
5425233430109903

Visa:
4263982640269299
4917484589897107

Diners Club:
30569309025904

[lucatony]

I didn't know that each card provider has their own assigned prefix numbers. I am so glad I found this channel! Thanks a lot for your clear explanation!:)

[JamesAdams-wczl]

Dude, you just helped me to understand "Regular expressions" in Python that I've for long time. Catch my burning 👍👍👍 and loyal subscription.

[tsudashiro]

I wrote the same program last month but only used string methods, so the code was a bit long, with the use of regex like you show in this video, it's more efficient. Good job!

[jstnngy]

Hello sir, by chance is this possible to be added on a database? Like using xampp mysql?

[jess.t]

Hey mate, do you have any idea how relative the card number with the expiry date and CVV number? Is there any algorithm that check them altogether? Thanks