Question on sort() key function

[Robert Latest]

Paul Rubin wrote:
> The attribute is on instances of File, not on the class itself.  See
> if this works:
>
>    flist.sort(key=lambda f: f.mod_date.toordinal)

It doesn't throw an error any more, but neither does it sort the list. This, 
however, works:

----------------------
def by_date(f1, f2):
	return f1.mod_date.toordinal() - f2.mod_date.toordinal()

flist.sort(by_date)
----------------------

So I'm sticking with it, although I sort of liked the key approach.

robert