what about now

How is this not readable...Lol

Smart....

Thanks. I see.

The input can't be 13.

and there is no 13th floor (due to superstition)

What if the input is 13? Then it doesn't even work. How can this be top solution? :D

I appreciated:

1. the spacing
2. that 13 as an input wasn't even considered! :-D

Thanks,
But in our case, the second iterable is less in length than the first. Unlike your example. How would you explain that?

1. map(int, str(number)) returns a list of all the digits in a number. e.g,

list(map(int,str(123))) = [1,2,3]

2. when there are more than one iterables in the map function, the given function iterates through both lists, kinda like zip. a takes the values of the first iterable and b takes the value of the second. e.g.,

list(map(lambda a, b: a+b, [1,2,3], [4,5,6])) = [1+4, 2+5, 3+6] = [5,7,9]

Someday I will remember to do this!

Good, but not readable

Very clear!