[[x,f(x)] for x in list that maximizes f(x)] <--newbie help

[Niels L Ellegaard]

I just started learning python and I have been wondering. Is there a
short pythonic way to find the element, x, of a list, mylist, that
maximizes an expression f(x).

In other words I am looking for a short version of the following:

pair=[mylist[0],f(mylist[0])]
for x in mylist[1:]:
     if f(x) > pair[1]:
           pair=[x,f(x)]