mirror of https://github.com/me50/kukemuna.git
60 lines
1.3 KiB
Python
60 lines
1.3 KiB
Python
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import re
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import sys
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while True:
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try:
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card = input("Number: ").strip() # Remove leading and trailing whitespaces
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if card.isdigit():
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break
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except:
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ValueError
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if not (len(card) == 13 or len(card) == 15 or len(card) == 16):
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print("INVALID")
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quit()
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cardNumber = int(card)
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numLength = len(card)
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id = int(card[0:4].splitlines()[0])
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sum = multiply = 0
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# Validate cardNumber with Luhn's Algorithm
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while (cardNumber > 0):
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if (multiply):
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if (cardNumber % 10 * 2 > 9):
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n = cardNumber % 10 * 2
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while (n > 0):
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sum += int(n % 10)
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n = int(n / 10)
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else:
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sum += cardNumber % 10 * 2
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cardNumber = int(cardNumber / 10)
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multiply = 0
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else:
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sum += cardNumber % 10
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cardNumber = int(cardNumber / 10)
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multiply = 1
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if (sum % 10 != 0):
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print("INVALID")
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quit()
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if ((int(id / 100) == 34 or int(id / 100) == 37) and numLength == 15):
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print("AMEX")
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quit()
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if ((int(id / 1000) == 4) and (numLength == 13 or numLength == 16)):
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print("VISA")
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quit()
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if (((int(id / 100) >= 51 and int(id / 100) <= 55) or (id >= 2221 and id <= 2720)) and numLength == 16):
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print("MASTERCARD")
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quit()
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else:
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print("INVALID")
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