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

[380162267qq at gmail.com]

在 2016年10月14日星期五 UTC-4下午7:35:08，38016... at gmail.com写道：
> 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?
> 
> Thank you

!!!!!I learn more new tricks in Python. Thank you all of you guys.
You are all very kind helpful and knowledgeable.