Walking lists
Arnaud Delobelle
arnodel at googlemail.com
Thu Feb 25 08:26:45 EST 2010
lallous wrote:
> Hello
>
>
> I am still learning Python, and have a question, perhaps I can shorten
> the code:
>
> L = (
> (1, 2, 3),
> (4,),
> (5,),
> (6, 7)
> )
>
> for x in L:
> print x
>
> What I want, is to write the for loop, something like this:
>
> for (first_element, the_rest) in L:
> print first_element
> for x in the_rest:
> # now access the rest of the elements
>
> I know I can :
> for x in L:
> first = x[0]
> rest = x[1:]
Others have replied about Python 3. In Python 2.x, you can use an
iterator:
for tuple in L:
it = iter(tuple)
first = it.next()
for x in it:
...
HTH
--
Arnaud
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