Lots of good variations for this simple question. But for my money, this is the easiest to read.

Exactly like my solution.

Never used python2
Thanks !

Because this is Python 2.
In Python 3 you should use next(filter(...)) instead of filter(...)[0] and list(filter(...)) in order to return a list, not a filter object.

Pls why copying your exact code to understand it gives this result :
(beginning erased)
'filter' object is not subscriptable

One of the reasons school is good

This is the correct "best practices" solution.

Awww man!

I really like this solution because it doesn't use the math module and it still remains simple.

@pumacens, ffs, how many times have you been told already that you are NOT ALLOWED to publicly post any comments which might spoil the kata solution?!