python: can I see which iteration I'm on in a loop?

BrianK · 08-27-2008, 02:10 PM

In this bit of code, is there a way to do away with the "count" var?

Code:

count = 0
for root,dirs,files in os.walk("/some/dir"):
    count += 1
    if (count % 10 == 0):
        do_something()

I think I remembered seeing some special built-in that you can ask which index of the iteration you're on rather than maintaining a "count" variable. Is that correct?

Dan04 · 08-27-2008, 08:44 PM

Yes. You just do

Code:

for index, value in enumerate(the_iterable):

BrianK · 08-27-2008, 09:01 PM

Quote:

Originally Posted by Dan04

Yes. You just do

Code:

for index, value in enumerate(the_iterable):

that's what I was looking for.

Thanks!