pairs from a list

Matthew_WARREN at bnpparibas.com Matthew_WARREN at bnpparibas.com
Thu Jan 24 11:23:45 CET 2008


:) I knew it was too simple to be true

and appropriately slows down when corrected, dang.

:)

Matt.


                                                                                                                                        
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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])

Peter
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