Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!news.stack.nl!newsfeed.xs4all.nl!newsfeed4.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.009 X-Spam-Evidence: '*H*': 0.98; '*S*': 0.00; 'subject:not': 0.03; 'suppose': 0.07; 'none)': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'url:github': 0.09; 'def': 0.12; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'header:User-Agent:1': 0.23; 'extension': 0.26; 'header:X -Complaints-To:1': 0.27; 'subject:that': 0.31; 'writes:': 0.31; 'file': 0.32; '(e.g.': 0.33; 'subject:?': 0.36; 'list': 0.37; 'skip:o 20': 0.38; 'message-id:@gmail.com': 0.38; 'to:addr:python- list': 0.38; 'to:addr:python.org': 0.39; 'either': 0.39; 'received:org': 0.40; 'how': 0.40; 'more': 0.64; 'determine': 0.67; 'subject:Test': 0.84; 'received:89': 0.85; 'subject:very': 0.91 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Akira Li <4kir4.1i@gmail.com> Subject: Re: Test for an empty directory that could be very large if it is not empty? Date: Thu, 07 Aug 2014 16:19:19 +0400 References: <53E2A22A.10906@it.uu.se> Mime-Version: 1.0 Content-Type: text/plain X-Gmane-NNTP-Posting-Host: 89.169.229.68 User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) Cancel-Lock: sha1:CFgACsTJ1eto6uOyxaqt90ndUGs= X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 17 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1407413974 news.xs4all.nl 2938 [2001:888:2000:d::a6]:33576 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:75848 Virgil Stokes writes: > Suppose I have a directory C:/Test that is either empty or contains > more than 2000000 files, all with the same extension (e.g. *.txt). How > can I determine if the directory is empty WITHOUT the generation of a > list of the file names in it (e.g. using os.listdir('C:/Test')) when > it is not empty? def is_empty_dir(dirpath): return next(scandir(dirpath), None) is None https://github.com/benhoyt/scandir -- Akira