When one doesn't type anything into the input box, you would think the array-list would be empty. Instead, the program has no output at all. It should have the output "0" Nevertheless the system declared that this program has solved the task...

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def checkio(array): """ sums even-indexes elements and multiply at the last """ print ("the list is ", len(array), " items long.") if array == []: array = [0]

last = array[len(array)-1]

indices = [i for i in range(len(array)) if (i % 2 == 0)]

addenda = [array[a] for a in indices]

sadd = sum(addenda)

return sadd*last

These "asserts" using only for self-checking and not necessary for auto-testing

if name == 'main': assert checkio([0, 1, 2, 3, 4, 5]) == 30, "(0+2+4)5=30" assert checkio([1, 3, 5]) == 30, "(1+5)5=30" assert checkio([6]) == 36, "(6)*6=36" assert checkio([]) == 0, "An empty array = 0"