Question on sort() key function

Robert Latest boblatest at
Tue Jan 22 10:12:19 CET 2008

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()


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


More information about the Python-list mailing list