This is not a good answer at all. Horrible formatting as well as the use of .substr which has been deprecated in favour of .substring.

Would be a better model solution without the console.log("We are all simple little agents to the Hive Mind, Glory to Mandkind!!").

I mean runtime because of an additional function call.

This does not work since Python 3.8, do not upvote anymore. This is because the + operator can't be applied between two range function calls anymore as they do not return lists but special objects. Replace range(3, number, 3) with list(range(3, number, 3)) to make it work.

Pointless.

Okay, I see, just started using this paltform.

Any function call always adds a bit of overhead. Conditional woudl be faster here.

Is that necessary when replying to solutions though? Anyone clicking to see these comments in this theread under a solution must have seen the solution by default. That's what I thought.

This is a generator comprehension actually, so slightly more efficient.

It would be much better if you were already summing during the first iteration over the numbers. The final sum(s) call is unecessary and results in yet another iteration over the list.