Especialized generator

[Boogie El Aceitoso]

Hi,

I want to write a generator that specializes on os.walk. It should yield only
certain kinds of files.

What's the best way of doing this? How do you save the state on the base
generator?

TIA

 

[Miki Tebeka]

Hell Boogie,

I want to write a generator that specializes on os.walk. It should yield only
certain kinds of files.

What's the best way of doing this? How do you save the state on the base
generator?

Using os.walk

HTH.
Miki

 

[Aahz]

I want to write a generator that specializes on os.walk. It should
yield only certain kinds of files.

What's the best way of doing this? How do you save the state on the
base generator?

You don't. You write another generator that yields appropriate results
from calling os.walk(). Chaining generators is *wonderful*.

 

[Boogie El Aceitoso]

You don't. You write another generator that yields appropriate results
from calling os.walk(). Chaining generators is *wonderful*.

I think I got it. And yes, it IS wonderful.

 

[Terry Reedy]

I want to write a generator that specializes on os.walk. It should yield only
certain kinds of files.

What's the best way of doing this? How do you save the state on the base
generator?

For those who didn't get the chaining idea (latter reply): something like

def boogie_walk(testarg, *walkargs):
for item in os.walk(*walkargs):
if <boogie_test using testarg, item>: yield item

I presume there is also ifilter() or something in itertools that will do
the same.

Terry J. Reedy