Path: csiph.com!usenet.pasdenom.info!dedibox.gegeweb.org!gegeweb.eu!nntpfeed.proxad.net!proxad.net!feeder1-2.proxad.net!usenet-fr.net!nerim.net!novso.com!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 0.020 X-Spam-Evidence: '*H*': 0.96; '*S*': 0.00; 'installed.': 0.07; 'namespace': 0.09; 'pep': 0.09; 'python': 0.11; 'optional': 0.16; 'received:72.5': 0.16; 'received:72.5.230': 0.16; 'received:sender1.zohomail.com': 0.16; 'received:zohomail.com': 0.16; 'trying': 0.19; 'packages.': 0.19; 'package.': 0.24; 'installed': 0.27; "doesn't": 0.30; "i'm": 0.30; 'this.': 0.32; 'regular': 0.32; 'created': 0.35; 'but': 0.35; 'there': 0.35; 'described': 0.36; 'charset:us-ascii': 0.36; 'thanks': 0.36; 'to:addr:python-list': 0.38; 'does': 0.39; 'to:addr:python.org': 0.39; 'skip:p 20': 0.39; 'skip:u 10': 0.60; 'manually': 0.60; 'header:Message-Id:1': 0.63; 'discover': 0.82 Date: Tue, 24 Dec 2013 12:57:47 +0100 From: Brecht Machiels To: python-list@python.org Subject: discover contents of a namespace package X-Mailer: Sylpheed 3.3.0 (GTK+ 2.24.22; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-ZohoMailClient: External X-Zoho-Virus-Status: 2 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: 12 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1387886261 news.xs4all.nl 2861 [2001:888:2000:d::a6]:43688 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:62674 Hello, I'm trying to use namespace packages (as described by PEP 420) to manage optional components of my Python package. I would like to discover which optional components are installed. Unfortunately, I have not found a straightforward way to do this. For regular packages, pkgutil.walk_packages() does this, but this doesn't work for namespace packages. Is there a way to discover the installed contents of a namespace package without manually reading the filesystem? Is there a way to do this using namespace packages created using pkgutil or pkg_resources? Thanks -- Brecht Machiels