pairs from a list

Matthew_WARREN at Matthew_WARREN at
Thu Jan 24 11:23:45 CET 2008

:) I knew it was too simple to be true

and appropriately slows down when corrected, dang.



           __peter__ at                                                                                                             
           Sent by:                                                                                                                  cc 
                                                                        Re: pairs from a list                                           
           23/01/2008 18:32                                                                                                             

Matthew_WARREN wrote:

> I'm just fiddling with this, am no great expert, but I added
> def pairs5(x):
>         o=[]
>         for n in zip(x[::2],x[1:2]):

The second argument should be x[1::2].

>                 o.append(n)
>         return o
> I dont know if that breaks any constraints placed on the problem, but I

It breaks the constraints unless the above is not cut-n-paste ;)
Also note that your pairs5() offers no advantage over

def pairs6(x):
    return zip(x[::2], x[1::2])


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