Circular iteration on tuple starting from a specific index

[Ian Kelly]

On Tue, May 30, 2017 at 10:25 AM, Beppe <giuseppecostanzi at gmail.com> wrote:
> hi all
>
> I've a tuple, something like
>
> x = ("A","B","C","D","E","F","G","H",)
>
> I would want to iterate on all tuple's elements
> starting from a specific index
>
>
> something like
>
> Python 2.7.9 (default, Jun 29 2016, 13:08:31)
> [GCC 4.9.2] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
>>>> x = ("A","B","C","D","E","F","G","H",)
>>>> for i in x[2:]:
> ...     print i
> ...
> C
> D
> E
> F
> G
> H
>>>>
>
>
>
> with the difference that I would want to restart from the beginning when I reach the end of the tupla
>
>
> C
> D
> E
> F
> G
> H
> A
> B
>
> I would want to make a circular iteration....
>
> suggestions?

for i in (x[2:] + x[:2]):
    print(i)

Or using the itertools module you could chain islices together but
that's more verbose and probably overkill as long as the tuples are
small.