Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #35011

Re: Iterating over files of a huge directory

Show key headers only | View raw

[Multipart message — attachments visible in raw view] - view raw

On 12/17/2012 01:50 PM, Oscar Benjamin wrote:
> On 17 December 2012 18:40, Evan Driscoll <driscoll@cs.wisc.edu> wrote:
>> On 12/17/2012 09:52 AM, Oscar Benjamin wrote:
>>> https://github.com/benhoyt/betterwalk
>>
>> This is very useful to know about; thanks.
>>
>> I actually wrote something very similar on my own (I wanted to get
>> information about whether each directory entry was a file, directory,
>> symlink, etc. without separate stat() calls).
> 
> The initial goal of betterwalk seemed to be the ability to do os.walk
> with fewer stat calls. I think the information you want is part of
> what betterwalk finds "for free" from the underlying OS iteration
> (without the need to call stat()) but I'm not sure.

Yes, that's my impression as well.


>> (Also just for the record and anyone looking for other posts, I'd guess
>> said discussion was on Python-dev. I don't look at even remotely
>> everything on python-list (there's just too much), but I do skim most
>> subject lines and I haven't noticed any discussion on it before now.)
> 
> Actually, it was python-ideas:
> http://thread.gmane.org/gmane.comp.python.ideas/17932
> http://thread.gmane.org/gmane.comp.python.ideas/17757

Thanks again for the pointers; I'll have to go through that thread. It's
possible I can contribute something; it sounds like at least at one
point the implementation was ctypes-based and is sometimes slower, and I
have both a (now-defunct) C implementation and my current Cython module.
Ironically I haven't actually benchmarked mine. :-)

Evan

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Iterating over files of a huge directory Gilles Lenfant <gilles.lenfant@gmail.com> - 2012-12-17 07:28 -0800
  Re: Iterating over files of a huge directory Chris Angelico <rosuav@gmail.com> - 2012-12-18 02:41 +1100
    Re: Iterating over files of a huge directory Paul Rudin <paul.nospam@rudin.co.uk> - 2012-12-17 17:27 +0000
      Re: Iterating over files of a huge directory MRAB <python@mrabarnett.plus.com> - 2012-12-17 18:29 +0000
      Re: Iterating over files of a huge directory Chris Angelico <rosuav@gmail.com> - 2012-12-18 08:10 +1100
  Re: Iterating over files of a huge directory Tim Golden <mail@timgolden.me.uk> - 2012-12-17 15:48 +0000
  Re: Iterating over files of a huge directory Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2012-12-17 15:52 +0000
    Re: Iterating over files of a huge directory Gilles Lenfant <gilles.lenfant@gmail.com> - 2012-12-17 08:06 -0800
    Re: Iterating over files of a huge directory Gilles Lenfant <gilles.lenfant@gmail.com> - 2012-12-17 08:06 -0800
  Re: Iterating over files of a huge directory marduk <marduk@python.net> - 2012-12-17 10:50 -0500
  Re: Re: Iterating over files of a huge directory Evan Driscoll <driscoll@cs.wisc.edu> - 2012-12-17 12:40 -0600
  Re: Re: Iterating over files of a huge directory Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2012-12-17 19:50 +0000
  Re: Iterating over files of a huge directory Evan Driscoll <driscoll@cs.wisc.edu> - 2012-12-17 14:09 -0600
  Re: Iterating over files of a huge directory Terry Reedy <tjreedy@udel.edu> - 2012-12-17 16:27 -0500

csiph-web