How to sort this without 'cmp=' in python 3?

[Robin Koch]

Am 15.10.2016 um 01:33 schrieb 380162267qq at gmail.com:
> nums=['3','30','34','32','9','5']
> I need to sort the list in order to get the largest number string: '953433230'
>
> nums.sort(cmp=lambda a,b: cmp(a+b, b+a), reverse=True)
>
> But how to do this in python 3?

https://docs.python.org/3/library/functools.html#functools.cmp_to_key

| Transform an old-style comparison function to a key function.

-- 
Robin Koch