PEP ? os.listdir enhancement

[Daniel Dittmar]

Riccardo Galli wrote:
> On Thu, 23 Jun 2005 11:34:02 +0200, Andreas Kostyrka wrote:
> 
> 
>>What's wrong with
>>
>>(os.path.join(d, x) for x in os.listdir(d))
>>
>>It's short, and easier to understand then some obscure option ;)
>>
>>Andreas
> 
> 
> how does it help in using list comprehension, as the ones in the first
> post?

You can nest list comprehension
[ e
     for e in (os.path.join(d, x) for x in os.listdir(d))
     if os.path.isdir (e)]

You might also want to look at module itertools, which has better 
support for transforming and filtering in multiple steps.

Daniel