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11 lines
479 B
Python
11 lines
479 B
Python
class Luhn(object):
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def __init__(self, card_num):
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self.card_num = card_num
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def valid(self):
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if len(self.card_num) < 2 or not self.card_num.isnumeric():
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return False
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temp = ''.join(filter(lambda x : x in '0123456789', self.card_num))
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temp = [int(num[1]) * 2 if (num[0]+1) % 2 == 0 else int(num[1]) for num in enumerate(temp[::-1])]
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temp = [num - 9 if num > 9 else num for num in temp]
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return sum(temp) % 10 == 0 |