iterating "by twos"

[Erik Max Francis]

giltay at gmail.com wrote:

>      Whoops, I misread the original post.  That would be:
> 
> for x, y in zip(a[::2], a[1::2]):
>     frob(x, y)
> 
> ... which I don't use a lot.

Sorry, posted before I saw your reply.  Still, you're building three 
sublists in order to just iterate over them.

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