Path: csiph.com!usenet.pasdenom.info!news.redatomik.org!newsfeed.xs4all.nl!newsfeed3.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 0.000 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'algorithm': 0.04; 'importing': 0.05; 'subject:Python': 0.06; 'context': 0.07; 'debugging': 0.07; 'differently': 0.07; 'here?': 0.09; 'imported': 0.09; 'namespace': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'referenced': 0.09; 'question.': 0.14; 'windows': 0.15; 'different,': 0.16; 'dump': 0.16; 'received:80.91.229.3': 0.16; 'received:dip0.t-ipconnect.de': 0.16; 'received:plane.gmane.org': 0.16; 'received:t-ipconnect.de': 0.16; 'refactoring': 0.16; 'sys.modules': 0.16; 'there?': 0.16; 'traceback.': 0.16; 'wsgi': 0.16; 'exception': 0.16; 'folder': 0.16; 'thursday,': 0.16; 'fix': 0.17; 'wrote:': 0.18; 'app': 0.19; 'module': 0.19; 'thu,': 0.19; 'seems': 0.21; 'tests': 0.22; 'print': 0.22; 'load': 0.23; 'this?': 0.23; 'header:User-Agent:1': 0.23; 'error': 0.23; 'script.': 0.24; 'file.': 0.24; 'script': 0.25; 'skip:" 20': 0.27; 'header:X-Complaints-To:1': 0.27; 'chris': 0.29; 'am,': 0.29; 'gives': 0.31; 'pickle': 0.31; 'lists': 0.32; "we're": 0.32; 'run': 0.32; 'another': 0.32; 'quite': 0.32; 'linux': 0.33; 'running': 0.33; 'mac': 0.33; "i'd": 0.34; 'subject: (': 0.35; 'subject:with': 0.35; 'anywhere': 0.35; 'except': 0.35; 'anybody': 0.35; 'no,': 0.35; 'but': 0.35; 'there': 0.35; 'half': 0.37; 'application': 0.37; 'two': 0.37; 'list': 0.37; 'server': 0.38; 'ben': 0.38; 'question,': 0.38; 'whatever': 0.38; 'to:addr:python-list': 0.38; 'expect': 0.39; 'does': 0.39; 'moving': 0.39; 'to:addr:python.org': 0.39; 'changed': 0.39; 'unable': 0.39; 'received:org': 0.40; 'how': 0.40; '2nd': 0.60; 'catch': 0.60; 'full': 0.61; 'save': 0.62; 'our': 0.64; '30,': 0.65; 'answer.': 0.68; '2015': 0.84; 'fails,': 0.84; 'so...': 0.84; 'whereas': 0.91 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Peter Otten <__peter__@web.de> Subject: Re: ImportError with pickle (Python 2.7.9), possibly platform dependent Date: Fri, 01 May 2015 14:34:13 +0200 Organization: None References: <494551ca-532f-4d4d-aff0-a3932416c8f4@googlegroups.com> <20a5c7bf-2163-4b7a-8495-30ce23239903@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7Bit X-Gmane-NNTP-Posting-Host: p57bd85d4.dip0.t-ipconnect.de User-Agent: KNode/4.13.3 X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.20+ 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: 45 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1430483669 news.xs4all.nl 2894 [2001:888:2000:d::a6]:35932 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:89729 Ben Sizer wrote: > On Thursday, 30 April 2015 01:45:05 UTC+1, Chris Angelico wrote: >> On Thu, Apr 30, 2015 at 2:01 AM, Ben Sizer wrote: >> > 1) There clearly is a module named OMDBMap, and it's importable - it's >> > there in the 2nd line of the traceback. >> > >> > Does anybody have any suggestions on how I can go about debugging this? >> > Or refactoring it to avoid whatever is happening here? >> >> Are you half way through importing it when this load() call happens? >> That might cause some issues. > > No, we already imported OMDBMap at the top of OMDBSetup. > >> Has your current directory been changed anywhere in there? > > Good question. It turns out that the current directory seems to be $HOME > when loading, but is the script directory during saving. This will be > because the Linux server is running under mod_wsgi, whereas we run the > save script in-place. Our Windows and Mac tests run via Flask's built-in > server so the working directory is likely to be the same whether we're > running the script that does pickle.dump or the whole app that does > pickle.load. > >> What happens if you catch this exception and print out sys.modules at >> that point? > > Another good question, and this gives us the answer. The module lists are > quite different, as I'd expect because the load happens in the context of > the full application whereas the dump happens as a standalone script. But > literally every module that is in the 'before dump' list is in the 'before > load' list - except OMDBMap. Like the error says! What /is/ in the 'before > load' list however is "my_wsgi_app.OMDBMap". The module has been imported, > but the pickle algorithm is unable to reconcile the module in the WSGI > app's namespace with the module referenced in the pickle file. > > So... I don't know how to fix this, but I do now know why it fails, and I > have a satisfactory answer for why it is acting differently on the Linux > server (and that is just because that is the only one running under WSGI). > Two out of three isn't bad! How about moving OMDBMap.py into the parent folder of my_wsgi_app.__file__ or any other folder in sys.path?