class CreditCard:
	def __init__(self, card_number):
  		self.card_number = "the card number"
  		self.card_type = "a string"
  		self.valid = "a boolean"

#Create and add your method called `determine_card_type` to the CreditCard class here:
	def determine_card_type(self):
		pass

#Create and add your method called `check_length` to the CreditCard class here:
	def check_length(self):
		pass

#Create and add your method called 'validate' to the CreditCard class here:
	def validate(self):
		pass


#do not modify assert statements

cc = CreditCard('9999999999999999')

assert cc.valid == False, "Credit Card number cannot start with 9"
assert cc.card_type == "INVALID", "99... card type is INVALID"

cc = CreditCard('4440')

assert cc.valid == False, "4440 is too short to be valid"
assert cc.card_type == "INVALID", "4440 card type is INVALID"

cc = CreditCard('5515460934365316')

assert cc.valid == True, "Mastercard is Valid"
assert cc.card_type == "MASTERCARD", "card_type is MASTERCARD"

cc = CreditCard('6011053711075799')

assert cc.valid == True, "Discover Card is Valid"
assert cc.card_type == "DISCOVER", "card_type is DISCOVER"

cc = CreditCard('379179199857686')

assert cc.valid == True, "AMEX is Valid"
assert cc.card_type == "AMEX", "card_type is AMEX"

cc = CreditCard('4929896355493470')

assert cc.valid == True, "Visa Card is Valid"
assert cc.card_type == "VISA", "card_type is VISA"

cc = CreditCard('4329876355493470')

assert cc.valid == False, "This card does not meet mod10"
assert cc.card_type == "INVALID", "card_type is INVALID"

cc = CreditCard('339179199857685')

assert cc.valid == False, "Validates mod10, but invalid starting numbers for AMEX"
assert cc.card_type == "INVALID", "card_type is INVALID"