looping throuhg a list 2 items at a time

[Fernando Pérez]

Rajarshi Guha wrote:

> Hi,
>   I have a list like this:  l = [1,'s', 2,'t', 3,'d']
> 
> I'd like to loop through the list but within the loop I want
> the current element and the element just after it:
> I tried this
> 
> liter = iter(l)
> for i in l:
>   print i, liter.next()

This works (notice you need to iterate over the _iterator_ for this to work):

In [9]: liter = iter(l)

In [10]: for a in liter:
   ....:   print a,liter.next()
   ....:
1 s
2 t
3 d

cheers,

f.