[Tutor] How to create a key-value pairs with alternative elements in a list ... please help.

[kumar s]

Thanks for this trick.

Can I call this as category thermo-NUKE  of list
functions.
-K

--- Jeff Shannon <jeff at ccvcorp.com> wrote:

> kumar s wrote:
> 
> > Problem:
> > How do i capture every alternative element in list
> a:
> > 
> > I am unable to pump the a,b, and c into keys list
> > and apple, boy,cat into vals list.
> 
> In a sufficiently recent version of Python, you
> should be able to use 
> an extended slice with a stride --
> 
>      keys = a[::2]
>      vals = a[1::2]
> 
> (Note that this is untested, as I don't have a
> recent version of 
> Python handy at the moment; I'm on 2.2 here, which
> doesn't have 
> extended slices.)
> 
> Jeff Shannon
> Technician/Programmer
> Credit International
> 
> 
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> 


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