Parsing lists

[Peter Schneider-Kamp]

Seamus Venasse wrote:
> 
> I am creating a simple list of titles and urls.  I would like to parse this
> list, but I keep receiving an error.  Here is a simplified version of my
> code and error received:
> 
> >>> list = [ 'title1', 'url1', 'title2', 'url2', 'title3', 'url3' ]
> >>> for title, url in list:
> ...     print title, url
> ...
> Traceback (innermost last):
>   File "<stdin>", line 1, in ?
> ValueError: unpack sequence of wrong size

If you are using this form of the for-loop you need your list be
a list of sequences (e.g. tuples, lists). In your example:

list = [ ('title1', 'url1'), ('title2', 'url2'), ('title3', 'url3') ]
for title, url in list:
    print title, url

If possible change the structure of your list accordingly.

Good luck,
Peter
--
Peter Schneider-Kamp          ++47-7388-7331
Herman Krags veg 51-11        mailto:peter at schneider-kamp.de
N-7050 Trondheim              http://schneider-kamp.de