best Pythonic way to do this sort: Python newb

[Paul Rubin]

"Sean Berry" <sean at buildingonline.com> writes:
> myList = [[value1, value2, value3],[value1, value2, value3], ...]
> 
> I have a function which takes value3 from the lists above and returns
> another value.  I want to use this returned value to sort the lists.
> 
> So, my resultant list would be ordered by the return value of the
> function with value3 as its argument.
> 
> From a relative Python newb, what is the best way to do this?

def get_key(x): return x[2]
sorted_list = sorted(myList, key=get_key)