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• Python unit-testing with nose: Making sequential tests

  - by cool-RR

  I am just learning how to do unit-testing. I'm on Python / nose / Wing IDE. (The project that I'm writing tests for is a simulations framework, and among other things it lets you run simulations both synchronously and asynchronously, and the results of the simulation should be the same in both.) The thing is, I want some of my tests to use simulation results that were created in other tests. For example, synchronous_test calculates a certain simulation in synchronous mode, but then I want to calculate it in asynchronous mode, and check that the results came out the same. How do I structure this? Do I put them all in one test function, or make a separate asynchronous_test? Do I pass these objects from one test function to another? Also, keep in mind that all these tests will run through a test generator, so I can do the tests for each of the simulation packages included with my program.

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• Django 1.2 object level permissions - third party solutions?

  - by mawimawi

  Since Django 1.2 final is almost out, I am curious if there are already projects that use the new object level permissions / row level permissions system. [django-authority][1] which is a possible solution for Django up to 1.1 has not been updated for a while, and does not (yet) use the new permissions system. It seems to me that Django-Authority is in a comatose state. Does someone know about upcoming or maybe even finished solutions? I'd appreciate any good links to active projects with at least some downloadable content very much. [1]: http://packages.python.org/django-authority/ django-authority

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• LaTeX at symbol

  - by secondbanana

  What does the @ symbol mean in LaTeX? I'm looking at the source of apa.cls, and there's a declaration: \newsavebox\gr@box and later on \sbox\gr@box{\includegraphics[width=\linewidth]{#2}}. It seems like @ isn't acting as a normal character, but I can't figure out exactly what it's doing, and couldn't find anything after bit of googling (how I would love a Google regex feature!) Thanks. EDIT: Thanks for the help; of the links I looked through I found http://www.tug.org/pipermail/tugindia/2002-January/000178.html to be very helpful and concise. To summarize, the @ character is not normally allowed in the names of macros, so as a hack for scoping, LaTeX packages declare it internally to be a valid name character and use it for their macros. You can use \makeatletter in a document to access these macros, but you obviously must be very careful since you have can now overwrite essential LaTeX kernel macros; use \makeatother to revert.

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• DBD::Advantage and 64-bit Perl - Always 6060

  - by WarheadsSE

  I realize that I am attempting to go beyond the "supported" behavior of the manf's released drivers for perl, after all they have only released it in package with x86 .so's. However, since I cannot use their package with x64 Perl on a RHEL 5.4 x86_64 box, and maintaining a seperate install of x86 perl just for this one package, I have made an attempt to get this puppy working thanks to released 64-bit .so's that accompany other driver packages for Advantage. What I have done to this point: download beta 10 DBI drivers, in 32 download beta 10 PHP extension (it contains 32 and x86_64) copy the required DLLs into the ads-lib location (eg /usr/local/ads/lib64) compile the Perl DBI driver with the path to the lib64's .so's Good compilation, good install, good use. The problem is that I always get : failed: [iAnywhere Solutions][Advantage SQL][ASA] Error 6060: Advantage Database Server not available on specified server. axServerConnect (SQL-HY000)(DBD: db_login/SQLConnect err=-1) Does anyone have any ideas? EDIT: fixed package name in post title

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• Memory Profiling: How to detect which application/package is consuming too much memory

  - by malvim

  Hi, I have a situation here at work where we run a JEE server with several applications deployed on it. Lately, we've been having frequent OutOfMemoryException's. We suspect some of the apps might be behaving badly, maybe leaking, or something. The problem is, we can't really tell which one. We have run some memory profilers (like YourKit), and they're pretty good at telling what classes use the most memory. But they don't show relationships between classes, so that leaves us with a situation like this: We see that there are, say, lots of Strings and int arrays and HashMap entries, but we can't really tell which application or package they come from. Is there a way of knowing where these objects come from, so we can try to pinpoint the packages (or apps) that are allocating the most memory? Thank you in advance.

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• Pylons 1.0 AttributeError: 'module' object has no attribute 'metadata'

  - by shiki

  Python noob trying to learn Pylons. I'm using the QuickWiki tutorial (http://pylonshq.com/docs/en/1.0/tutorials/quickwiki_tutorial/) from the 1.0 documentation, but this alleged "1.0" doc seems to just be "0.9.7"; I suspect that this has something to do with the error I'm getting. When I execute "paster setup-app development.ini", I get this: (mydevenv)lucid@lucid-laptop:~/QuickWiki$ paster setup-app development.ini Traceback (most recent call last): ... edited for brevity... File "/home/lucid/mydevenv/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg/pkg_resources.py", line 1954, in load File "/home/lucid/QuickWiki/quickwiki/config/middleware.py", line 11, in <module> from quickwiki.config.environment import load_environment File "/home/lucid/QuickWiki/quickwiki/config/environment.py", line 12, in <module> from quickwiki.model import init_model File "/home/lucid/QuickWiki/quickwiki/model/__init__.py", line 27, in <module> pages_table = sa.Table('pages', meta.metadata, AttributeError: 'module' object has no attribute 'metadata' (mydevenv)lucid@lucid-laptop:~/QuickWiki$

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• ValueError with multi-table inheritance in Django Admin

  - by jorde

  I created two new classes which inherit model Entry: class Entry(models.Model): LANGUAGE_CHOICES = settings.LANGUAGES language = models.CharField(max_length=2, verbose_name=_('Comment language'), choices=LANGUAGE_CHOICES) user = models.ForeignKey(User) country = models.ForeignKey(Country, null=True, blank=True) created = models.DateTimeField(auto_now=True) class Comment(Entry): comment = models.CharField(max_length=2000, blank=True, verbose_name=_('Comment in English')) class Discount(Entry): discount = models.CharField(max_length=2000, blank=True, verbose_name=_('Comment in English')) coupon = models.CharField(max_length=2000, blank=True, verbose_name=_('Coupon code if needed')) After adding these new models to admin via admin.site.register I'm getting ValueError when trying to create a comment or a discount via admin. Adding entries works fine. Error msg: ValueError at /admin/reviews/discount/add/ Cannot assign "''": "Discount.discount" must be a "Discount" instance. Request Method: GET Request URL: http://127.0.0.1:8000/admin/reviews/discount/add/ Exception Type: ValueError Exception Value: Cannot assign "''": "Discount.discount" must be a "Discount" instance. Exception Location: /Library/Python/2.6/site-packages/django/db/models/fields/related.py in set, line 211 Python Executable: /usr/bin/python Python Version: 2.6.1

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• How to Use Grizzly Embedded Server for Mule as Well as Jersey

  - by Tim

  I'm currently using JerseyTest w/ Grizzly embedded server to test some code. I do some very simple configuration to point it to the proper resources: Map<String, String> initParams = new HashMap<String, String>(); initParams.put("com.sun.jersey.config.property.packages", "com.sample.service"); ApplicationDescriptor appDescriptor = new ApplicationDescriptor(); appDescriptor.setServletInitParams(initParams); super.setupTestEnvironment(appDescriptor); This works fine and the Jersey components are available and working as expected. I'm now trying to add some Mule functionality to some of these Jersey calls, but Mule is not being properly initialized/configured by Grizzly. Has anyone gotten this kind of setup running? What additional configuration do I need to do with JerseyTest/GrizzlyWebServer to get it to initialize Mule properly?

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• Installing Subversion on top of already installed Apache?

  - by Majid

  Hi all, I have a working WAMP environment (Apache Friends). I decided to try Subversion and downloaded CollabNetSubversion-server-1.6.9-1.win32.exe. On the download page there were packages including Apache server which I did not use - because I didn't want to replace my current Apache installation. I just installed the one that did not include Apache, and now I want to configure it to work with my current Apache. What should I do? Is there an easy step by step tutorial to explain this?

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• Problem with printing output using PHP library

  - by Jack

  I am using the PHP library tools on a we hosting service( with cURL enabled). I have so far tried 2 tools but I cant get the output of my code to print to the screen. http://github.com/jdp/twitterlibphp - PHP library Sample code - <?php require("twitter.lib.php"); $twitter = new Twitter("xxxx", "xxxxx"); $public_timeline = $twitter->getPublicTimeline(); echo'<pre>'; print_r( $public_timeline ); echo'</pre>'; ?> I don't get any output. What can be the problem? Do I need to install any modules or packages? Please Help

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• Problems with South/Django: not recognizing the Django App

  - by christmasgorilla

  I've got a Django project on my machine and when I try to use South to migrate the data schema, I get several odd errors. Example: $ python manage.py convert_to_south thisLocator /Library/Python/2.6/site-packages/registration/models.py:4: DeprecationWarning: the sha module is deprecated; use the hashlib module instead import sha /Users/cm/code/thisLocator/../thisLocator/batches/models.py:6: DeprecationWarning: the md5 module is deprecated; use hashlib instead import md5 There is no enabled application matching 'thisLocator'. I've followed the South documentation. Settings.py has it in the installed apps, I can run import south from the manage.py shell. Everyone else on my team is calling the app thisLocator. Am I doing something really stupid?

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• .Net Array or IList<T> from NumPy array in IronPython?

  - by Barry Wark

  Imagine I have a .Net application that supports user extensions in the form of Python modules by embedding IronPython. Using Ironclad, I can allow users to make use of the NumPy and SciPy packages from within their modules. How good is the interop provided by Ironclad? My question is: can I use a NumPy array of type T provided by the user's module in the rest of my app that requires an IList<T>? Edit To clarify, IronPython exposes any Python enumerable of objects of type T as an IEnumerable<T> or an IList<T>. I'm not sure if NumPy arrays fit in this category. I would rather not have to call .tolist() on the NumPy array as the arrays may be quite large.

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• Running Awk command on a cluster

  - by alex

  How do you execute a Unix shell command (awk script, a pipe etc) on a cluster in parallel (step 1) and collect the results back to a central node (step 2) Hadoop seems to be a huge overkill with its 600k LOC and its performance is terrible (takes minutes just to initialize the job) i don't need shared memory, or - something like MPI/openMP as i dont need to synchronize or share anything, don't need a distributed VM or anything as complex Google's SawZall seems to work only with Google proprietary MapReduce API some distributed shell packages i found failed to compile, but there must be a simple way to run a data-centric batch job on a cluster, something as close as possible to native OS, may be using unix RPC calls i liked rsync simplicity but it seem to update remote notes sequentially, and you cant use it for executing scripts as afar as i know switching to Plan 9 or some other network oriented OS looks like another overkill i'm looking for a simple, distributed way to run awk scripts or similar - as close as possible to data with a minimal initialization overhead, in a nothing-shared, nothing-synchronized fashion Thanks Alex

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• Subclipse plugin doesn't work in Eclipse?

  - by blackicecube

  Hi, even though there was no error when installing Subclipse in Eclipse. I won't see the SVN perspective at all? I have tried with "Eclipse Classic 3.5.1" and with "Eclipse for PHP Developers". After downloading and unzipping the packages I used Eclipse's "Install Software" mechanism to install Subclipse 1.6.x. I followed the steps described here: http://www3.math.tu-berlin.de/jreality/mediawiki/index.php/Subclipse_installation_in_eclipse_galileo. But after Eclipse re-starts I don't get any SVN Repository perspective? I have tried to un-install/re-install all the software components many times now. Finally after 3 hours of trying I am giving up. Does anyone have any hint what I am missing? Thanks! Peter

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• Geographical ontologies ready to use?

  - by Mulone

  Hi all, I'm looking for an ontology containing geographical knowledge. In particular I'd like to have these types of information: political states / regions / cities / city areas geographical regions (e.g. continents, name of mountains, lakes, etc) For example, starting from the node "New York" I'd like to be able to find parents like the New York state, the USA etc, and children like Manhattan, Bronx, etc. I couldn't find anything open-source/free to use. I know that a lot of researchers extract such information from Wikipedia, but I couldn't find any off-the-shelf packages to use. I also checked OpenStreetMap, which is great for the amount of data but doesn't seem to contain a proper geographical ontology. Even a web service would be good! Any hints? Mulone

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• Visual Web Developer 2005 Express loads very slowly

  - by d03boy

  I admit that I am not a guru of Visual Studio products at all. I am using Visual Web Developer 2005 Express Edition and I'm trying to load someone else's project. This project happens to be a website with many pages. After loading VWD, it asks for a project to open and I select the solution file. It then proceeds to take an extremely long time to load. The status bar indicates that references are being loaded, many of which are in the System.Web.* area it seems. It seems like it's going back and forth between some different packages. The loading time is upwards of 20 to 30 minutes or more. Some others have stated that their projects open fine when they go to File Open Website... and choose the project directory from there. Any ideas what the problem could be and how to fix it? Edit: It finally completed loading after an hour approximately.

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• Python: win32console import problem

  - by David

  I want to run wexpect (the windows port of pexpect) on my Windows 7 64-bit machine. I am getting the following error: C:\Program Files (x86)\wexpect\build\libwexpect.py Traceback (most recent call last): File "C:\Program Files (x86)\wexpect\build\lib\wexpect.py", line 97, in raise ImportError(str(e) + "This package was intended for Windows like operating systems.") ImportError: No module named win32console This package requires the win32 python packages.This package was intended for Windows like operatin g systems. In the code it is failing on the following line: from win32console import * I am using Python 2.6.4. I cannot figure out how to install win32console.

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• Setting up java configurations in eclipse..Param files

  - by Charlie

  I'm going to be using ECJ for doing genetic programming and I haven't touched java in years. I'm working on setting up the eclipse environment and I'm catching a few snags. The ECJ source has several packages, and several sample programs come along with it. I ran one sample program (called tutorial1) by going to the run configurations and adding -file pathToParamsFile to the program arguments. This made it point to the params file of that tutorial and run that sample. In a new example I am testing (from the package gui) there are TWO params files. I tried pointing to just one param file and a program ran in the console, but there was supposed to be a GUI which did not load. I'm not sure what I'm doing wrong. Any help would be greaaatly appreciated.

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• RubyQt Crashing on QTableWidget

  - by gja

  I'm getting some weirdness with QtRuby when using a TableWidget. The table widget loads, but when you click on the elements in the row, the app segfaults and crashes. require 'Qt4' class SimpleModel < Qt::AbstractTableModel def rowCount(parent) return 1 end def columnCount(parent) return 1 end def data(index, role=Qt::DisplayRole) return Qt::Variant.new("Really Long String") if index.row == 0 and index.column == 0 and role == Qt::DisplayRole return Qt::Variant.new end end Qt::Application.new(ARGV) do Qt::TableWidget.new(1, 1) do set_model SimpleModel.new show end exec end The backtrace seems to imply that it is bombing in mousePressEvent #6 0x01624643 in QAbstractItemView::pressed(QModelIndex const&) () from /usr/lib/libQtGui.so.4 #7 0x016306f5 in QAbstractItemView::mousePressEvent(QMouseEvent*) () from /usr/lib/libQtGui.so.4 If I override mousePressEvent and mouseMoveEvent, these kinds of crashes no longer happen. Am I doing something wrong over here, or can I chalk this up as a bug in QtRuby? I'm on fedora11, with the following packages installed: QtRuby-4.4.0-1.fc11.i586 ruby-1.8.6.369-1.fc11.i586 These crashes also happen when running the script on Windows.

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• Regex to detect a proper permalink?

  - by Fedor

  These permalinks above are rerouted to my page: page.php?permalink=events/foo page.php?permalink=events/foo/ page.php?permalink=ru/events/foo page.php?permalink=ru/events/foo/ The events is dynamic, it could be specials or packages. My dilemma is basically; I need to detect an empty link in order so I can feed a robots no index meta tag in the case of: page.php?permalink=events page.php?permalink=events/ page.php?permalink=ru/events/ page.php?permalink=ru/events I can't use a simple pattern such as [a-zA-Z]+\/?(.+)/ since it won't work on the i18n permalinks. What regex could I use which would detect this, using $_GET['permalink'] as the reference to the permalinks? And avoid false positives? Update: Empty link means there's no fragment after the "events/" part. These are empty: page.php?permalink=events page.php?permalink=events/ page.php?permalink=ru/events/ page.php?permalink=ru/events

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• Large Scale VHDL modularization techniques

  - by oxinabox.ucc.asn.au

  I'm thinking about implimenting a 16 bit CPU in VHDL. A simplish CPU. ADD, MULS, NEG, BitShift, JUMP, Relitive Jump, BREQ, Relitive BREQ, i don't know somethign along these lines Probably all only working with 16bit operands. I might even cut it down and use only a single operand and a accumulator. With Some status regitsters, Carry, Zero, Neg (unless i use a Accumlator), I know how to design all the parts from logic gates, and plan to build them up from first priciples, So for my ALU I'll need to 'build' a ADDer, proably a Carry Look ahead, group adder, this adder it self is make up oa a couple of parts, wich are themselves made up of a couple of parts. Anyway, my problem is not the CPU design, or the VHDL (i know the language, more or less). It's how i should keep things organised. How should I use packages, How should I name my processes and port maps? (i've never seen the benifit of naming the port maps, or processes)

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• socket.setdefaulttimeout interacting with M2Crypto connection

  - by Becky

  Hello - I'm making a secure SSL connection to a server using python and M2Crypto. See code below. from M2Crypto import SSL, m2,x509 from M2Crypto.m2xmlrpclib import Server, SSL_Tranport ctx = SSL.Context() m2.ssl_ctx_use_pkey_privkey(ctx.ctx,myKey.pkey) m2.ssl_ctx_use_x509(ctx.ctx,myCert.x509) server = Server(serverUrl, SSL_Transport(ctx)) server.ping() The above works fine. If I try to change the default socket timeout by adding the following two lines at the beginning of the code, I get a protocol error. import socket socket.setdefaulttimeout(40) This is the error I receive: File "/usr/local/lib/python2.4/xmlrpclib.py", line 1096, in call return self._send(self._name, args) File "/usr/local/lib/python2.4/xmlrpclib.py", line 1383, in _request verbose=self._verbose File "/usr/local/lib/python2.4/site-packages/M2Crypto/m2xmlrpclib.py", line 68, in request headers xmlrpclib.ProtocolError: Why is the default socket timeout causing problems?

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• Compile 32bit mercurial on x86_64

  - by krashalot

  I'm using the academic version of EPD (Enthought Python Distribution) which is 32bit. My computer is Linux x86_64. platform.architecture() returns ('32bit','ELF') I want to install Mercurial. The instructions in README didn't work at first, because make gave this error: "LONG_BIT definition appears wrong for platform (bad gcc/glibc config?)." I commented out that line in pyport.h and then it compiled fine. Now, after successful compilation I get this error when running it: ImportError: /scratch/epd/lib/python2.6/site-packages/mercurial/osutil.so: wrong ELF class: ELFCLASS64 It appears that I compiled a 64bit version of hg, and it won't run with my 32bit python. I don't see any arch flags in the mercurial makefile. How can I force it to compile in 32bit mode?

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• Eclipse and python: library will import in interprer, but not in IDE

  - by John

  I'm running Windows 7, Python 2.6.4 and the latest version of Eclipse. I downloaded the boto library (http://code.google.com/p/boto/) and ran python setup.py install, which created boto-1.9b-py2.6.egg in C:\Python26\Lib\site-packages. Importing a class - say, by doing 'from boto.sqs.connection import SQSConnection' - works fine from the python command line tool. But Eclipse will not find boto, despite the fact that it is using the same python interpreter as I am using when at the command line. I added the library as an external source folder, but that didn't work either. How can I properly import the boto library into Eclipse? Thanks.

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• Symbol error in java application using netbeans 6.8 when adding a shared project to library

  - by Malachi

  I have a project which has shared functionality between three other projects and have linked these to existing projects as I normally would using the add project functionality of the libraries folder. This all used to work however when I started up Netbeans yesterday it just wasn't working as in the other projects won't compile even though the projects are linked. It can recognise the packages - just the actual classes themselves were not recognised... and to add to the weirdness some of the classes are getting picked up fine. I have checked the dist folder of the shared project and the Shared.jar file exists. Also I have checked the Jar and the other classes that are not being recognises are there also. Any suggestions? Solution I had to reinstall netbeans to get this solution resolved

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