[Zope] ZPT reverse ordering

[dman]

--bp/iNruPH9dso1Pn
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Fri, May 03, 2002 at 10:39:29AM +0100, Tom Nixon wrote:

| > python:sequence.sort(thelist,(('bobobase_modification_time','d
| > esc'),))">
|=20
| Thanks for your help. I get an error when I try this though:
|=20
| Error Type: TALESError
| Error Value: exceptions.AttributeError on 'None' object has no attribute
| 'getitem' in "", at line 160, column 3

>>> l =3D [ 3 , 2 ]
>>> print l
[3, 2]
>>> print l.sort()
None
>>> print l
[2, 3]
>>>=20

The sort() method modifies the list in-place and returns None.  You
are trying to iterate over the return value of sort(), which doesn't
have a getitem method.

The simplest solution is to sort the list after you have a reference
to it.  Eg:
    tal:define=3D"l python:[3,2] ; foo l.sort()"

As a side effect it creates 'foo' as a reference to None, but that
isn't significant.

-D

--=20

An anxious heart weighs a man down,
but a kind word cheers him up.
        Proverbs 12:25
=20
GnuPG key : http://dman.ddts.net/~dman/public_key.gpg


--bp/iNruPH9dso1Pn
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.6 (GNU/Linux)
Comment: For info see http://www.gnupg.org

iEYEARECAAYFAjzSle4ACgkQO8l8XBKTpRTeggCeNzdLBt2xrJNW6m/HdkISgFZq
hCkAoJ0utnpPYCtORmmUxYrHPwy7t7Iq
=tzU7
-----END PGP SIGNATURE-----

--bp/iNruPH9dso1Pn--