Pythonic Swap?

Question

I found that i have to perform a swap in python and i write something like this.

arr[first], arr[second] = arr[second], arr[first]

I suppos

Answer 1

I suppose you could take advantage of the step argument of slice notation to do something like this:

myarr[:2] = myarr[:2][::-1]

I'm not sure this is clearer or more pythonic though...