I went over and made a list to do all this! Brilliant

which one

immaculate

Elementary

nice radix conversion from int to string

counting matches of '1' is simple, and could easily scale to higher radixes such as octal
could easily be extended to match multiple digits, such as .count('137')

range traversal is clear

accumulator function sum() over a list is also a nice aggregate function

nah

Clever, but this code is less readable than if you split it into several functions with explicit names.

which one

same

He meant the logic of solution would not be valid anymore, but still genius as it has 0.5 =)

Really nice solution. It's always a pleasure to learn from others with more skill - bravo!

i know of one other which was the exact same length. what are the other ways tho?

EDIT: I found a way which is 1 char shorter

IDK if it was a joke, but there are 3 shorter ways to import.

dictionary lover ;-)

my exact solution but i was golfing