Sha256: f59e3ef67b4c36878bb0fb97f9ee48c4d4e963f893f7cadd79cb3a6c6b5bead0
Contents?: true
Size: 627 Bytes
Versions: 82
Compression:
Stored size: 627 Bytes
Contents
class Luhn(object):
def __init__(self, card_num):
self.card_num = card_num.replace(" ", "")
def addends(self):
def luhn_transform(n):
return (2 * n - 9) if (n > 4) else (2 * n)
old_digits = [int(d) for d in str(self.card_num)]
return [(luhn_transform(n) if (i % 2 == 0) else n)
for i, n in enumerate(old_digits, start=len(old_digits) % 2)]
def checksum(self):
return sum(self.addends())
def is_valid(self):
if len(self.card_num) <= 1 or not self.card_num.isdigit():
return False
return self.checksum() % 10 == 0
Version data entries
82 entries across 82 versions & 1 rubygems