#  File:       luhn.py
#  Purpose:    Write a program that can take a number and determine whether
#              or not it is valid per the Luhn formula.
#  Programmer: Amal Shehu
#  Course:     Exercism
#  Date:       Sunday 18 September 2016, 09:55 PM


def Luhn(card_number):

    digits = digits_of(card_number)
    
def checksum(card_number):
    return luhn(card_number)

@@ -314,16 +314,63 @@
 er)%0A    
+odd = digits%5B-1::-2%5D%0A    even = digits%5B-2::-2%5D%0A
 %0Adef che

Find odd and even digits