forked from course-work/week1
94 lines
2.3 KiB
Python
94 lines
2.3 KiB
Python
class CreditCard:
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card_types = [
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('4', 'VISA'),
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('34', 'AMEX'),
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('37', 'AMEX'),
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('51', 'MASTERCARD'),
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('52', 'MASTERCARD'),
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('53', 'MASTERCARD'),
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('54', 'MASTERCARD'),
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('55', 'MASTERCARD'),
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('6011', 'DISCOVER'),
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]
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@classmethod
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def luna_check(cls, card_number):
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digits = []
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for index, digit in enumerate(card_number[::-1]):
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if index % 2:
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digits += [int(i) for i in str(int(digit)*2)]
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else:
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digits.append(int(digit))
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return not bool(sum(digits) % 10)
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def __init__(self, card_number):
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self.card_number = card_number
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@property
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def card_type(self):
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for start, type in self.card_types:
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if self.card_number.startswith(start):
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return type
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#Create and add your method called `check_length` to the CreditCard class here:
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def check_length(self):
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pass
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@property
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def is_valid(self):
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return self.luna_check(self.card_number), self.card_type
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#Create and add your method called 'validate' to the CreditCard class here:
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# print(CreditCard.luna_check('4485040993287616'))
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cc = CreditCard('4485040993287616')
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print(cc.is_valid)
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exit(0)
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#do not modify assert statements
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cc = CreditCard('9999999999999999')
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assert cc.is_valid == False, "Credit Card number cannot start with 9"
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assert cc.card_type == "INVALID", "99... card type is INVALID"
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cc = CreditCard('4440')
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assert cc.is_valid == False, "4440 is too short to be valid"
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assert cc.card_type == "INVALID", "4440 card type is INVALID"
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cc = CreditCard('5515460934365316')
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assert cc.is_valid == True, "Mastercard is Valid"
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assert cc.card_type == "MASTERCARD", "card_type is MASTERCARD"
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cc = CreditCard('6011053711075799')
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assert cc.is_valid == True, "Discover Card is Valid"
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assert cc.card_type == "DISCOVER", "card_type is DISCOVER"
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cc = CreditCard('379179199857686')
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assert cc.is_valid == True, "AMEX is Valid"
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assert cc.card_type == "AMEX", "card_type is AMEX"
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cc = CreditCard('4929896355493470')
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assert cc.is_valid == True, "Visa Card is Valid"
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assert cc.card_type == "VISA", "card_type is VISA"
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cc = CreditCard('4329876355493470')
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assert cc.is_valid == False, "This card does not meet mod10"
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assert cc.card_type == "INVALID", "card_type is INVALID"
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cc = CreditCard('339179199857685')
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assert cc.is_valid == False, "Validates mod10, but invalid starting numbers for AMEX"
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assert cc.card_type == "INVALID", "card_type is INVALID" |