[Tutor] nested loops

Kent Johnson kent37 at tds.net
Mon Aug 22 13:11:30 CEST 2005

Jonas Melian wrote:
> Is there any way more efficient for run a nested loop?
> ------
> for a in list_a:
>     for b in list_b:
>         if a == b: break

efficient in running time? lines of code? What you have is pretty simple, what don't you like about it?

In Python 2.4 you could use a generator expression:
for (a for a in list_a for b in list_b if a==b):

If you want to know which is faster you have to time them...

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