real_fake.py

from functools import reduce
import sys


def check_credict_card(card_numbers):
	singles = reduce(lambda x,y: x+y, [x for x in card_numbers[1::2]])
	doubles = reduce(lambda x,y: x+y, [x*2 for x in card_numbers[::2]])
	total  = singles + doubles
	return 'Real' if total % 10 == 0 else 'Fake'

def clean_test_case(test_case):
	return [int(x) for x in reduce(lambda x,y: x+y, test_case.strip().split(' '))]

def execute():
	test_cases = open(sys.argv[1], 'r')
	for test_case in test_cases:
		test = clean_test_case(test_case)
		print(check_credict_card(test))
	test_cases.close()

if __name__ == '__main__':
	execute()