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Re: Iterating over files of a huge directory

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Date Tue, 18 Dec 2012 02:41:42 +1100
Subject Re: Iterating over files of a huge directory
From Chris Angelico <rosuav@gmail.com>
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On Tue, Dec 18, 2012 at 2:28 AM, Gilles Lenfant
<gilles.lenfant@gmail.com> wrote:
> Hi,
>
> I have googled but did not find an efficient solution to my problem. My customer provides a directory with a huuuuge list of files (flat, potentially 100000+) and I cannot reasonably use os.listdir(this_path) unless creating a big memory footprint.
>
> So I'm looking for an iterator that yields the file names of a directory and does not make a giant list of what's in.

Sounds like you want os.walk. But... a hundred thousand files? I know
the Zen of Python says that flat is better than nested, but surely
there's some kind of directory structure that would make this
marginally manageable?

http://docs.python.org/3.3/library/os.html#os.walk

ChrisA

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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

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