Why return None?

Michael Hudson mwh at python.net
Wed Aug 25 13:03:10 CEST 2004

Anthony Baxter <anthonybaxter at gmail.com> writes:

> On Wed, 25 Aug 2004 08:26:26 GMT, Martin DeMello
> <martindemello at yahoo.com> wrote:
> > It seems to be a fairly common pattern for an object-modifying method to
> > return None - however, this is often quite inconvenient.
> list.reverse() modifies the list in place. The python idiom is that
> these don't return a reference to the modified list. Although note the
> new list.sorted() method in 2.4...

It's a builtin now (as is reversed).


  Back in the old days, software would grow until it could send and
  receive e-mail, but now that even the virusses are doing that, the
  fashion has changed, and now software evolves until it has venomous
  fangs, the better to do serious damage when it sucks.    -- AdB, asr

More information about the Python-list mailing list