iterating over list with one mising value

Ian Kelly ian.g.kelly at gmail.com
Tue Feb 7 17:03:52 CET 2012


On Tue, Feb 7, 2012 at 5:27 AM, Sammy Danso <samdansobe at yahoo.com> wrote:
>
> Hello experts,
> I am having trouble accessing the content of my list.
> my list content has 2-pair value with the exception of one which has single value. here is an example  ['a', 1, 'b', 1, 'c', 3, 'd']
>
> I am unable to iterate through list to access invidual value pairs
>
> I get an error message saying ' the list should more than 1 value pairs'. I guess because 'd' has no value. How do I solve this problem?

What are you using to iterate through pairs instead of individual
elements?  It sounds like it is not very flexible.  I would recommend
instead using the "grouper" recipe from the itertools documentation:

http://docs.python.org/library/itertools.html#recipes

Cheers,
Ian



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