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• Python profiler and CPU seconds

  - by dude

  Hey, I'm totally behind this topic. Yesterday I was doing profiling using Python profiler module for some script I'm working on, and the unit for time spent was a 'CPU second'. Can anyone remind me with the definition of it? For example for some profiling I got: 200.750 CPU seconds. What does that supposed to mean? At other case and for time consuming process I got: -347.977 CPU seconds, a negative number! Is there anyway I can convert that time, to calendar time? Cheers,

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• Ruby/python Script to convert html text to plain text in csv file

  - by Miau

  Hi all: So i have a large(ish) file in a csv format, that contains a column that has html and i need to transform that to plain text (ie readable by people ,ie with no script tags) I dont have much experience with ruby, but it seems like the perfect language to do this The File should still be in a cv format after the parsing ( ie, other columns should nto be disturbed) Helpz? Fair enough, I thought there might be a library that does that as long as the html was valid. The file looks something liek this "xxxx-15454ss", "xome name", "<div class=""myClass""><strong>The Vintage Junior </strong>offers the same specs as the Vintage Series but only in 3/4 Size ideal for Kids. the 57 Model is great value for a good quality guitar. For more info go to <a href=""www.somehting.com"">something</a> </div> " I m trying to include the common html tags we would be using Thanks

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• Parsing unicode XML with Python SAX on App Engine

  - by Derek Dahmer

  I'm using xml.sax with unicode strings of XML as input, originally entered in from a web form. On my local machine (python 2.5, using the default xmlreader expat, running through app engine), it works fine. However, the exact same code and input strings on production app engine servers fail with "not well-formed". For example, it happens with the code below: from xml import sax class MyHandler(sax.ContentHandler): pass handler = MyHandler() # Both of these unicode strings return 'not well-formed' # on app engine, but work locally xml.parseString(u"<a>b</a>",handler) xml.parseString(u"<!DOCTYPE a[<!ELEMENT a (#PCDATA)> ]><a>b</a>",handler) # Both of these work, but output unicode xml.parseString("<a>b</a>",handler) xml.parseString("<!DOCTYPE a[<!ELEMENT a (#PCDATA)> ]><a>b</a>",handler) resulting in the error: File "<string>", line 1, in <module> File "/base/python_dist/lib/python2.5/xml/sax/__init__.py", line 49, in parseString parser.parse(inpsrc) File "/base/python_dist/lib/python2.5/xml/sax/expatreader.py", line 107, in parse xmlreader.IncrementalParser.parse(self, source) File "/base/python_dist/lib/python2.5/xml/sax/xmlreader.py", line 123, in parse self.feed(buffer) File "/base/python_dist/lib/python2.5/xml/sax/expatreader.py", line 211, in feed self._err_handler.fatalError(exc) File "/base/python_dist/lib/python2.5/xml/sax/handler.py", line 38, in fatalError raise exception SAXParseException: <unknown>:1:1: not well-formed (invalid token) Any reason why app engine's parser, which also uses python2.5 and expat, would fail when inputting unicode?

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• how to make this in python

  - by user2980882

  The number reduction game Rules of the game: ? The first player to write a 0 wins. ? To start the game, Player 1 picks any whole number greater than 1, say 18. ? The players take turns reducing the number by either: o Subtracting 1 from the number his/her opponent just wrote, OR o Halving the number his/her opponent just wrote, rounding down if necessary. Write a Python program that lets two players play the number reduction game. Your program should: 1. Ask Player 1 to enter the starting number. 2. Use a while-loop to allow the players to take turns reducing the number until someone wins. 3. Each time a player enters a positive number (not 0), inform the other player what his/her choices are and ask him/her to enter the next number. 4. Declare the winner when someone enters 0. Example session: Player 1, enter a number greater than 1: 16 Player 2, your choices are 15 or 8: 15 Player 1, your choices are 14 or 7: 7 Player 2, your choices are 6 or 3:3 Player 1, your choices are 2 or 1:2 Player 2, your choices are 1 or 1:1 Player 1, your choices are 0 or 0:0 Player 1 wins

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• Using the Static Code Analysis feature of Visual Studio (Premium/Ultimate) to find memory leakage problems

  - by terje

  Memory for managed code is handled by the garbage collector, but if you use any kind of unmanaged code, like native resources of any kind, open files, streams and window handles, your application may leak memory if these are not properly handled.  To handle such resources the classes that own these in your application should implement the IDisposable interface, and preferably implement it according to the pattern described for that interface. When you suspect a memory leak, the immediate impulse would be to start up a memory profiler and start digging into that.   However, before you follow that impulse, do a Static Code Analysis run with a ruleset tuned to finding possible memory leaks in your code.  If you get any warnings from this, fix them before you go on with the profiling. How to use a ruleset In Visual Studio 2010 (Premium and Ultimate editions) you can define your own rulesets containing a list of Static Code Analysis checks.   I have defined the memory checks as shown in the lists below as ruleset files, which can be downloaded – see bottom of this post.  When you get them, you can easily attach them to every project in your solution using the Solution Properties dialog. Right click the solution, and choose Properties at the bottom, or use the Analyze menu and choose “Configure Code Analysis for Solution”: In this dialog you can now choose the Memorycheck ruleset for every project you want to investigate.  Pressing Apply or Ok opens every project file and changes the projects code analysis ruleset to the one we have specified here. How to define your own ruleset  (skip this if you just download my predefined rulesets) If you want to define the ruleset yourself, open the properties on any project, choose Code Analysis tab near the bottom, choose any ruleset in the drop box and press Open Clear out all the rules by selecting “Source Rule Sets” in the Group By box, and unselect the box Change the Group By box to ID, and select the checks you want to include from the lists below. Note that you can change the action for each check to either warning, error or none, none being the same as unchecking the check.   Now go to the properties window and set a new name and description for your ruleset. Then save (File/Save as) the ruleset using the new name as its name, and use it for your projects as detailed above. It can also be wise to add the ruleset to your solution as a solution item. That way it’s there if you want to enable Code Analysis in some of your TFS builds.   Running the code analysis In Visual Studio 2010 you can either do your code analysis project by project using the context menu in the solution explorer and choose “Run Code Analysis”, you can define a new solution configuration, call it for example Debug (Code Analysis), in for each project here enable the Enable Code Analysis on Build   In Visual Studio Dev-11 it is all much simpler, just go to the Solution root in the Solution explorer, right click and choose “Run code analysis on solution”.     The ruleset checks The following list is the essential and critical memory checks.  CheckID Message Can be ignored ? Link to description with fix suggestions CA1001 Types that own disposable fields should be disposable No  http://msdn.microsoft.com/en-us/library/ms182172.aspx CA1049 Types that own native resources should be disposable Only if the pointers assumed to point to unmanaged resources point to something else  http://msdn.microsoft.com/en-us/library/ms182173.aspx CA1063 Implement IDisposable correctly No  http://msdn.microsoft.com/en-us/library/ms244737.aspx CA2000 Dispose objects before losing scope No  http://msdn.microsoft.com/en-us/library/ms182289.aspx CA2115 1 Call GC.KeepAlive when using native resources See description  http://msdn.microsoft.com/en-us/library/ms182300.aspx CA2213 Disposable fields should be disposed If you are not responsible for release, of if Dispose occurs at deeper level  http://msdn.microsoft.com/en-us/library/ms182328.aspx CA2215 Dispose methods should call base class dispose Only if call to base happens at deeper calling level  http://msdn.microsoft.com/en-us/library/ms182330.aspx CA2216 Disposable types should declare a finalizer Only if type does not implement IDisposable for the purpose of releasing unmanaged resources  http://msdn.microsoft.com/en-us/library/ms182329.aspx CA2220 Finalizers should call base class finalizers No  http://msdn.microsoft.com/en-us/library/ms182341.aspx Notes: 1) Does not result in memory leak, but may cause the application to crash   The list below is a set of optional checks that may be enabled for your ruleset, because the issues these points too often happen as a result of attempting to fix up the warnings from the first set.   ID Message Type of fault Can be ignored ? Link to description with fix suggestions CA1060 Move P/invokes to NativeMethods class Security No http://msdn.microsoft.com/en-us/library/ms182161.aspx CA1816 Call GC.SuppressFinalize correctly Performance Sometimes, see description http://msdn.microsoft.com/en-us/library/ms182269.aspx CA1821 Remove empty finalizers Performance No http://msdn.microsoft.com/en-us/library/bb264476.aspx CA2004 Remove calls to GC.KeepAlive Performance and maintainability Only if not technically correct to convert to SafeHandle http://msdn.microsoft.com/en-us/library/ms182293.aspx CA2006 Use SafeHandle to encapsulate native resources Security No http://msdn.microsoft.com/en-us/library/ms182294.aspx CA2202 Do not dispose of objects multiple times Exception (System.ObjectDisposedException) No http://msdn.microsoft.com/en-us/library/ms182334.aspx CA2205 Use managed equivalents of Win32 API Maintainability and complexity Only if the replace doesn’t provide needed functionality http://msdn.microsoft.com/en-us/library/ms182365.aspx CA2221 Finalizers should be protected Incorrect implementation, only possible in MSIL coding No http://msdn.microsoft.com/en-us/library/ms182340.aspx   Downloadable ruleset definitions I have defined three rulesets, one called Inmeta.Memorycheck with the rules in the first list above, and Inmeta.Memorycheck.Optionals containing the rules in the second list, and the last one called Inmeta.Memorycheck.All containing the sum of the two first ones.  All three rulesets can be found in the  zip archive  “Inmeta.Memorycheck” downloadable from here.   Links to some other resources relevant to Static Code Analysis MSDN Magazine Article by Mickey Gousset on Static Code Analysis in VS2010 MSDN :  Analyzing Managed Code Quality by Using Code Analysis, root of the documentation for this Preventing generated code from being analyzed using attributes Online training course on Using Code Analysis with VS2010 Blogpost by Tatham Oddie on custom code analysis rules How to write custom rules, from Microsoft Code Analysis Team Blog Microsoft Code Analysis Team Blog

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• Why does python easy install give me "permission denied" errors?

  - by Golden Sinha

  When i try to install program in ubuntu 12.04 it shows the error. program 1 : home@home-Compaq-610:~/Desktop$ python setup.py install running install running build running build_py creating build creating build/lib.linux-i686-2.7 copying Calculator.py - build/lib.linux-i686-2.7 running install_lib copying build/lib.linux-i686-2.7/Calculator.py - /usr/local/lib/python2.7/dist-packages error: /usr/local/lib/python2.7/dist-packages/Calculator.py: Permission denied . program 2 : home@home-Compaq-610:~/Desktop$ sudo chmod +x Moto.bin [sudo] password for home: home@home-Compaq-610:~/Desktop$ it shows like this but it do not install the program. program 3 : home@home-Compaq-610:~/Desktop$ python setup.py install [ERROR] wxPython2.8 is required. how to install wxPython2.8 please tell. if i try to install this program using easy_install it shows like this. home@home-Compaq-610:~/Desktop$ easy_install editra error: can't create or remove files in install directory The following error occurred while trying to add or remove files in the installation directory: [Errno 13] Permission denied: '/usr/local/lib/python2.7/dist-packages/test-easy-install-6778.pth' The installation directory you specified (via --install-dir, --prefix, or the distutils default setting) was: /usr/local/lib/python2.7/dist-packages/ Perhaps your account does not have write access to this directory? If the installation directory is a system-owned directory, you may need to sign in as the administrator or "root" account. If you do not have administrative access to this machine, you may wish to choose a different installation directory, preferably one that is listed in your PYTHONPATH environment variable. For information on other options, you may wish to consult the documentation at: http://packages.python.org/distribute/easy_install.html Please make the appropriate changes for your system and try again. home@home-Compaq-610:~/Desktop$ please help me . please tell how to install programs..

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• How do I get ftype & assoc to match Windows Explorer?

  - by Gauthier

  I changed the association to use upon launching a .py file, via Windows Explorer: Tools - Folders - File types. Then browse to .py. Change the association to Wordpad. Now when I type the name of a py file in the command line, Wordpad opens it. But assoc and ftype in the command line still return the following: C:\> assoc .py .py = Python.File C:\> ftype Python.File Python.File = "C:\Program\Python27\python.exe" "%1" %* How come the association is working, but assoc and ftype are not aware of it? I did restart the prompt. More info from my registry: HKEY_CLASSES_ROOT\.py = Python.File HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.py\Application = wordpad.exe HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.py\OpenWithProgids\Python.File = HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.py\(Standard) = Python.File More registry: HKEY_CLASSES_ROOT\Applications\python.exe\shell\open\command\(Standard) = "C:\Program\Python27\python.exe" "%1" %*` I suppose this is what is showing up in ftype Python.File. But it does not seem to get used. (I am doing this for testing, so I can eventually choose my default version of Python easily).

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• cx_Oracle.DatabaseError: ORA-01036: illegal variable name/number

  - by Joao Figueiredo

  I've a cron scheduled query which is failing with, File "./run_ora_query.py", line 69, in db_lookup cursor.execute(query, dict(time_key=time_key) ) cx_Oracle.DatabaseError: ORA-01036: illegal variable name/number where >>> dict(time_key=time_key) {'time_key': '12/10/2012 19:12:00'} I'm using a .yaml file to update the last time_key after each query runs, where the relevant parameters are, {query: 'select session_mode, inst_id, user_name, schema_name, os_user, process_id, process_mb_use, process_name, to_char(datet,''dd-mm-yyyy hh24:mi'') as DATETIME from os_admin.mem_usage where data > TO_DATE(:time_key,''dd-mm-yyyy hh24:mi:ss'') order by datet, inst_id, os_user', time_key: '12/10/2012 19:12:00'} Where is the culprit for this error?

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• PyQt : Checkbox in QTableWidget

  - by user1064815

  I use following code to put a checkbox in the 9th column of my QTableWidget chkBoxItem = QtGui.QTableWidgetItem() chkBoxItem.setFlags(QtCore.Qt.ItemIsUserCheckable | QtCore.Qt.ItemIsEnabled) chkBoxItem.setCheckState(QtCore.Qt.Unchecked) table.setItem(rowNo,9,chkBoxItem) Where table is my QtTableWidget. I need to add the row where the checkbox is clicked to a list.. how on earth do I achieve this? Kind regards,

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• Find multiple regex in each line and skip result if one of the regex doesn't match

  - by williamx

  I have a list of variables: variables = ['VariableA', 'VariableB','VariableC'] which I'm going to search for, line by line ifile = open("temp.txt",'r') d = {} match = zeros(len(variables)) for line in ifile: emptyCells=0 for i in range(len(variables)): regex = r'('+variables[i]+r')[:|=|\(](-?\d+(?:\.\d+)?)(?:\))?' pattern_variable = re.compile(regex) match[i] = re.findall(pattern_variable, line) if match[j] == []: emptyCells = emptyCells+1 if emptyCells == 0: for k, v in match[j]: d.setdefault(k, []).append(v) The requirement is that I will only keep the lines where all the regex'es matches! I want to collect all results for each variable in a dictionary where the variable name is the key, and the value becomes a list of all matches. The code provided is only what I've found out so far, and is not working perfectly yet...

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• Pygame camera follow in a 2d tile game

  - by Pipyaddict

  import pygame, sys from pygame.locals import * pygame.init() size = width, height = 480,320 screen = pygame.display.set_mode(size) r = 0 bif = pygame.image.load("map5.png") pygame.display.set_caption("Pygame 2D RPG !") x,y=0,0 movex, movey=0,0 character="boy.png" player=pygame.image.load(character).convert_alpha() while True: for event in pygame.event.get(): if event.type == pygame.QUIT: pygame.quit() sys.exit() if event.type==KEYDOWN: if event.key==K_a: movex=-1 elif event.key==K_d: movex=+1 elif event.key==K_w: movey=-1 elif event.key==K_s: movey=+1 if event.type==KEYUP: if event.key==K_a: movex=0 elif event.key==K_d: movex=0 elif event.key==K_w: movey=0 elif event.key==K_s: movey=0 x+=movex y+=movey screen.fill((r,0,0)) screen.blit(bif,(0,0)) screen.blit(player,(x,y)) pygame.display.flip() Everything works fine except I was wondering how on earth I was going to be able to move the camera where the player goes sorry that I can't show you the map file as you can't add images to it. But Thanks for your time The map is here: https://dl.dropboxusercontent.com/u/110087275/2d%20pygame/map5.png And finally the code is here: https://dl.dropboxusercontent.com/u/110087275/2d%20pygame/2d_pygame.py Thanks again for your time and effort!!!!!

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• Internal Server Error with mod_wsgi [django] on windows xp

  - by sacabuche

  when i run development server it works very well, even an empty project runing in mod_wsgi i have no problem but when i want to put my own project i get an Internal Server Error (500) in my apache conf i put WSGIScriptAlias /codevents C:/django/apache/CODEvents.wsgi <Directory "C:/django/apache"> Order allow,deny Allow from all </Directory> Alias /codevents/media C:/django/projects/CODEvents/html <Directory "C:/django/projects/CODEvents/html"> Order allow,deny Allow from all </Directory> in CODEvents.wsgi import os, sys sys.path.append('C:\\Python26\\Lib\\site-packages\\django') sys.path.append('C:\\django\\projects') sys.path.append('C:\\django\\apps') sys.path.append('C:\\django\\projects\\CODEvents') os.environ['DJANGO_SETTINGS_MODULE'] = 'CODEvents.settings' import django.core.handlers.wsgi application = django.core.handlers.wsgi.WSGIHandler() and in my error_log it said: [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] mod_wsgi (pid=1848): Exception occurred processing WSGI script 'C:/django/apache/CODEvents.wsgi'. [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] Traceback (most recent call last): [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\core\\handlers\\wsgi.py", line 241, in __call__ [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] response = self.get_response(request) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\core\\handlers\\base.py", line 142, in get_response [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self.handle_uncaught_exception(request, resolver, exc_info) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\core\\handlers\\base.py", line 166, in handle_uncaught_exception [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return debug.technical_500_response(request, *exc_info) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\views\\debug.py", line 58, in technical_500_response [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] html = reporter.get_traceback_html() [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\views\\debug.py", line 137, in get_traceback_html [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return t.render(c) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\__init__.py", line 173, in render [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self._render(context) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\__init__.py", line 167, in _render [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self.nodelist.render(context) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\__init__.py", line 796, in render [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] bits.append(self.render_node(node, context)) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\debug.py", line 72, in render_node [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] result = node.render(context) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\debug.py", line 89, in render [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] output = self.filter_expression.resolve(context) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\__init__.py", line 579, in resolve [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] new_obj = func(obj, *arg_vals) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\defaultfilters.py", line 693, in date [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return format(value, arg) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\dateformat.py", line 281, in format [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return df.format(format_string) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\dateformat.py", line 30, in format [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] pieces.append(force_unicode(getattr(self, piece)())) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\dateformat.py", line 187, in r [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self.format('D, j M Y H:i:s O') [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\dateformat.py", line 30, in format [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] pieces.append(force_unicode(getattr(self, piece)())) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\encoding.py", line 66, in force_unicode [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] s = unicode(s) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\functional.py", line 206, in __unicode_cast [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self.__func(*self.__args, **self.__kw) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\__init__.py", line 55, in ugettext [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return real_ugettext(message) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\functional.py", line 55, in _curried [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return _curried_func(*(args+moreargs), **dict(kwargs, **morekwargs)) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\__init__.py", line 36, in delayed_loader [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return getattr(trans, real_name)(*args, **kwargs) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\trans_real.py", line 276, in ugettext [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return do_translate(message, 'ugettext') [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\trans_real.py", line 266, in do_translate [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] _default = translation(settings.LANGUAGE_CODE) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\trans_real.py", line 176, in translation [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] default_translation = _fetch(settings.LANGUAGE_CODE) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\trans_real.py", line 159, in _fetch [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] app = import_module(appname) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\importlib.py", line 35, in import_module [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] __import__(name) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\contrib\\admin\\__init__.py", line 1, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] from django.contrib.admin.helpers import ACTION_CHECKBOX_NAME [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\contrib\\admin\\helpers.py", line 1, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] from django import forms [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\forms\\__init__.py", line 17, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] from models import * [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\forms\\models.py", line 6, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] from django.db import connections [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\db\\__init__.py", line 75, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] connection = connections[DEFAULT_DB_ALIAS] [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\db\\utils.py", line 91, in __getitem__ [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] backend = load_backend(db['ENGINE']) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\db\\utils.py", line 49, in load_backend [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] raise ImproperlyConfigured(error_msg) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] TemplateSyntaxError: Caught ImproperlyConfigured while rendering: 'django.db.backends.postgresql_psycopg2' isn't an available database backend. [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] Try using django.db.backends.XXX, where XXX is one of: [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] 'dummy', 'mysql', 'oracle', 'postgresql', 'postgresql_psycopg2', 'sqlite3' [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] Error was: cannot import name utils please help me!!

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• Plot numpy datetime64 with matplotlib

  - by enedene

  I have two numpy arrays 1D, one is time of measurement in datetime64 format, for example: array([2011-11-15 01:08:11, 2011-11-16 02:08:04, ..., 2012-07-07 11:08:00], dtype=datetime64[us]) and other array of same length and dimension with integer data. I'd like to make a plot in matplotlib time vs data. If I put the data directly, this is what I get: plot(timeSeries, data) Is there a way to get time in more natural units? For example in this case months/year would be fine.

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• Pyglet OpenGL drawing anti-aliasing

  - by Jared Forsyth

  I've been looking around for a way to anti-alias lines in OpenGL, but none of them seem to work... here's some example code: import pyglet from pyglet.gl import * window = pyglet.window.Window(resizable=True) @window.event def on_draw(): window.clear() pyglet.gl.glColor4f(1.0,0,0,1.0) glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) glEnable (GL_BLEND) glEnable (GL_LINE_SMOOTH); glHint (GL_LINE_SMOOTH_HINT, GL_DONT_CARE) glLineWidth (3) pyglet.graphics.draw(2, pyglet.gl.GL_LINES, ('v2i', (10, 15, 300, 305)) ) pyglet.app.run() Can anyone see what I am doing wrong?

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• Frame Buffers wont work with pyglet.

  - by Matthew Mitchell

  I have this code: def setup_framebuffer(surface): #Create texture if not done already if surface.texture is None: create_texture(surface) #Render child to parent if surface.frame_buffer is None: surface.frame_buffer = glGenFramebuffersEXT(1) glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, surface.frame_buffer) glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, surface.texture, 0) glPushAttrib(GL_VIEWPORT_BIT) glViewport(0,0,surface._scale[0],surface._scale[1]) glMatrixMode(GL_PROJECTION) glLoadIdentity() #Load the projection matrix gluOrtho2D(0,surface._scale[0],0,surface._scale[1]) glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, surface.frame_buffer) for this despite the second parameter printing as 1 for a test I did, I get: glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, surface.frame_buffer) I only got this after implementing pyglet. GLUT is too limited. Thank you.

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• Internal Server Error with mod_wgsi [django] on windows xp

  - by sacabuche

  when i run development server it works very well, even an empty project runing in mod_wsgi i have no problem but when i want to put my own project i get an Internal Server Error (500) in my apache conf i put WSGIScriptAlias /codevents C:/django/apache/CODEvents.wsgi <Directory "C:/django/apache"> Order allow,deny Allow from all </Directory> Alias /codevents/media C:/django/projects/CODEvents/html <Directory "C:/django/projects/CODEvents/html"> Order allow,deny Allow from all </Directory> in CODEvents.wsgi import os, sys sys.path.append('C:\\Python26\\Lib\\site-packages\\django') sys.path.append('C:\\django\\projects') sys.path.append('C:\\django\\apps') sys.path.append('C:\\django\\projects\\CODEvents') os.environ['DJANGO_SETTINGS_MODULE'] = 'CODEvents.settings' import django.core.handlers.wsgi application = django.core.handlers.wsgi.WSGIHandler() and in my error_log it said: [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] mod_wsgi (pid=1848): Exception occurred processing WSGI script 'C:/django/apache/CODEvents.wsgi'. [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] Traceback (most recent call last): [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\core\\handlers\\wsgi.py", line 241, in __call__ [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] response = self.get_response(request) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\core\\handlers\\base.py", line 142, in get_response [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self.handle_uncaught_exception(request, resolver, exc_info) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\core\\handlers\\base.py", line 166, in handle_uncaught_exception [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return debug.technical_500_response(request, *exc_info) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\views\\debug.py", line 58, in technical_500_response [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] html = reporter.get_traceback_html() [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\views\\debug.py", line 137, in get_traceback_html [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return t.render(c) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\__init__.py", line 173, in render [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self._render(context) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\__init__.py", line 167, in _render [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self.nodelist.render(context) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\__init__.py", line 796, in render [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] bits.append(self.render_node(node, context)) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\debug.py", line 72, in render_node [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] result = node.render(context) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\debug.py", line 89, in render [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] output = self.filter_expression.resolve(context) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\__init__.py", line 579, in resolve [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] new_obj = func(obj, *arg_vals) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\defaultfilters.py", line 693, in date [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return format(value, arg) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\dateformat.py", line 281, in format [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return df.format(format_string) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\dateformat.py", line 30, in format [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] pieces.append(force_unicode(getattr(self, piece)())) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\dateformat.py", line 187, in r [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self.format('D, j M Y H:i:s O') [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\dateformat.py", line 30, in format [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] pieces.append(force_unicode(getattr(self, piece)())) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\encoding.py", line 66, in force_unicode [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] s = unicode(s) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\functional.py", line 206, in __unicode_cast [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self.__func(*self.__args, **self.__kw) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\__init__.py", line 55, in ugettext [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return real_ugettext(message) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\functional.py", line 55, in _curried [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return _curried_func(*(args+moreargs), **dict(kwargs, **morekwargs)) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\__init__.py", line 36, in delayed_loader [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return getattr(trans, real_name)(*args, **kwargs) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\trans_real.py", line 276, in ugettext [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return do_translate(message, 'ugettext') [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\trans_real.py", line 266, in do_translate [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] _default = translation(settings.LANGUAGE_CODE) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\trans_real.py", line 176, in translation [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] default_translation = _fetch(settings.LANGUAGE_CODE) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\trans_real.py", line 159, in _fetch [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] app = import_module(appname) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\importlib.py", line 35, in import_module [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] __import__(name) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\contrib\\admin\\__init__.py", line 1, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] from django.contrib.admin.helpers import ACTION_CHECKBOX_NAME [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\contrib\\admin\\helpers.py", line 1, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] from django import forms [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\forms\\__init__.py", line 17, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] from models import * [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\forms\\models.py", line 6, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] from django.db import connections [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\db\\__init__.py", line 75, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] connection = connections[DEFAULT_DB_ALIAS] [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\db\\utils.py", line 91, in __getitem__ [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] backend = load_backend(db['ENGINE']) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\db\\utils.py", line 49, in load_backend [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] raise ImproperlyConfigured(error_msg) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] TemplateSyntaxError: Caught ImproperlyConfigured while rendering: 'django.db.backends.postgresql_psycopg2' isn't an available database backend. [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] Try using django.db.backends.XXX, where XXX is one of: [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] 'dummy', 'mysql', 'oracle', 'postgresql', 'postgresql_psycopg2', 'sqlite3' [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] Error was: cannot import name utils please help me!!

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• How to keep pyglet from clearing the screen ?

  - by mayasky

  I want to draw a scene and sequentially add lines to it. But pyglet keeps updating without control :( , so all I get is blinks from pyglet.gl import * window=pyglet.window.Window() def drawline(): ... @window.event def on_draw(): drawline() pyglet.app.run() should I change the decorator(if there exist options) or what? Thanks!

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• Pylibmc requiring libmemcached >= 0.32

  - by resopollution

  On Ubuntu, I installed libmemcached-dev using the following command: apt-get install libmemcached-dev Unfortunately it installs libmemcached version 0.31, and pylibmc requires that I compile with v 0.32+ to run, otherwise I get an import error. I've tried removing libmemcached-dev with apt-get --purge remove, then installing libmemcached v 0.38, then re-compiling pylibmc, but it still gives me the requires libmemcached v 0.32+ error.

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• Opening spreadsheet returns InMemoryUploadedFile

  - by David542

  I have a user uploading a file to a website and I need to parse the spreadsheet. Here is my code: input_file = request.FILES.get('file-upload') wb = xlrd.open_workbook(input_file) The error I keep getting is: TypeError at /upload_spreadsheet/ coercing to Unicode: need string or buffer, InMemoryUploadedFile found Why is this happening and what do I need to do to fix it? Thank you. For reference, this is how I open the file in the shell >>> import xlrd >>> xlrd.open_workbook('/Users/me/dave_example.xls') <xlrd.Book object at 0x10d9f7390>

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• Extending Programming Languages [closed]

  - by chpwn

  I'm a fan of clean code.

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• Django-admin.py not working (-bash:django-admin.py: command not found)

  - by Diego

  I'm having trouble getting django-admin.py to work... it's in this first location: /Users/mycomp/bin/ but I think I need it in another location for the terminal to recognize it, no? Noob, Please help. Thanks!! my-computer:~/Django-1.1.1 mycomp$ sudo ln -s /Users/mycomp/bin/django-admin.py /Users/mycomp/django-1.1.1/django-admin.py Password: ln: /Users/mycomp/django-1.1.1/django-admin.py: File exists my-computer:~/Django-1.1.1 mycomp$ django-admin.py --version -bash: django-admin.py: command not found

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• Is it OK to set "Cache-Control: public" when sending “304 Not Modified” for images stored in the dat

  - by Emilien

  After asking a question about sending “304 Not Modified” for images stored in the in the Google App Engine datastore, I now have a question about Cache-Control. My app now sends Last-Modified and Etag, but by default GAE alsto sends Cache-Control: no-cache. According to this page: The “no-cache” directive, according to the RFC, tells the browser that it should revalidate with the server before serving the page from the cache. [...] In practice, IE and Firefox have started treating the no-cache directive as if it instructs the browser not to even cache the page. As I DO want browsers to cache the image, I've added the following line to my code: self.response.headers['Cache-Control'] = "public" According to the same page as before: The “cache-control: public” directive [...] tells the browser and proxies [...] that the page may be cached. This is good for non-sensitive pages, as caching improves performance. The question is if this could be harmful to the application in some way? Would it be best to send Cache-Control: must-revalidate to "force" the browser to revalidate (I suppose that is the behavior that was originally the reason behind sending Cache-Control: no-cache) This directive insists that the browser must revalidate the page against the server before serving it from cache. Note that it implicitly lets the browser cache the page.

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• cPickle ImportError: No module named multiarray

  - by Rafal

  Hello, I'm using cPickle to save my Database into file. The code looks like that: def Save_DataBase(): import cPickle from scipy import * from numpy import * a=Results.VersionName #filename='D:/results/'+a[a.find('/')+1:-a.find('/')-2]+Results.AssType[:3]+str(random.randint(0,100))+Results.Distribution+".lft" filename='D:/results/pppp.lft' plik=open(filename,'w') DataOutput=[[[DataBase.Arrays.Nodes,DataBase.Arrays.Links,DataBase.Arrays.Turns,DataBase.Arrays.Connectors,DataBase.Arrays.Zones], [DataBase.Nodes.Data,DataBase.Links.Data,DataBase.Turns.Data,DataBase.OrigConnectors.Data,DataBase.DestConnectors.Data,DataBase.Zones.Data], [DataBase.Nodes.DictionaryPy2Vis,DataBase.Links.DictionaryPy2Vis,DataBase.Turns.DictionaryPy2Vis,DataBase.OrigConnectors.DictionaryPy2Vis,DataBase.DestConnectors.DictionaryPy2Vis,DataBase.Zones.DictionaryPy2Vis], [DataBase.Nodes.DictionaryVis2Py,DataBase.Links.DictionaryVis2Py,DataBase.Turns.DictionaryVis2Py,DataBase.OrigConnectors.DictionaryVis2Py,DataBase.DestConnectors.DictionaryVis2Py,DataBase.Zones.DictionaryVis2Py], [DataBase.Paths.List]],[Results.VersionName,Results.noZones,Results.noNodes,Results.noLinks,Results.noTurns,Results.noTrips, Results.Times.VersionLoad,Results.Times.GetData,Results.Times.GetCoords,Results.Times.CrossTheTime,Results.Times.Plot_Cylinder, Results.AssType,Results.AssParam,Results.tStart,Results.tEnd,Results.Distribution,Results.tVector]] cPickle.dump(DataOutput, plik, protocol=0) plik.close()` And it works fine. Most of my Database rows are lists of a lists, vecor-like, or array-like data sets. But now when I input data, an error occurs: def Load_DataBase(): import cPickle from scipy import * from numpy import * filename='D:/results/pppp.lft' plik= open(filename, 'rb') """ first cPickle load approach """ A= cPickle.load(plik) """ fail """ """ Another approach - data format exact as in Output step above , also fails""" [[[DataBase.Arrays.Nodes,DataBase.Arrays.Links,DataBase.Arrays.Turns,DataBase.Arrays.Connectors,DataBase.Arrays.Zones], [DataBase.Nodes.Data,DataBase.Links.Data,DataBase.Turns.Data,DataBase.OrigConnectors.Data,DataBase.DestConnectors.Data,DataBase.Zones.Data], [DataBase.Nodes.DictionaryPy2Vis,DataBase.Links.DictionaryPy2Vis,DataBase.Turns.DictionaryPy2Vis,DataBase.OrigConnectors.DictionaryPy2Vis,DataBase.DestConnectors.DictionaryPy2Vis,DataBase.Zones.DictionaryPy2Vis], [DataBase.Nodes.DictionaryVis2Py,DataBase.Links.DictionaryVis2Py,DataBase.Turns.DictionaryVis2Py,DataBase.OrigConnectors.DictionaryVis2Py,DataBase.DestConnectors.DictionaryVis2Py,DataBase.Zones.DictionaryVis2Py], [DataBase.Paths.List]],[Results.VersionName,Results.noZones,Results.noNodes,Results.noLinks,Results.noTurns,Results.noTrips, Results.Times.VersionLoad,Results.Times.GetData,Results.Times.GetCoords,Results.Times.CrossTheTime,Results.Times.Plot_Cylinder, Results.AssType,Results.AssParam,Results.tStart,Results.tEnd,Results.Distribution,Results.tVector]]= cPickle.load(plik)` Error is (in both cases): A= cPickle.load(plik) ImportError: No module named multiarray Any Ideas? PS.

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• Django 1.2 + South 0.7 + django-annoying's AutoOneToOneField leads to TypeError: 'LegacyConnection'

  - by konrad

  I'm using Django 1.2 trunk with South 0.7 and an AutoOneToOneField copied from django-annoying. South complained that the field does not have rules defined and the new version of South no longer has an automatic field type parser. So I read the South documentation and wrote the following definition (basically an exact copy of the OneToOneField rules): rules = [ ( (AutoOneToOneField), [], { "to": ["rel.to", {}], "to_field": ["rel.field_name", {"default_attr": "rel.to._meta.pk.name"}], "related_name": ["rel.related_name", {"default": None}], "db_index": ["db_index", {"default": True}], }, ) ] from south.modelsinspector import add_introspection_rules add_introspection_rules(rules, ["^myapp"]) Now South raises the following error when I do a schemamigration. Traceback (most recent call last): File "manage.py", line 11, in <module> execute_manager(settings) File "django/core/management/__init__.py", line 438, in execute_manager utility.execute() File "django/core/management/__init__.py", line 379, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "django/core/management/base.py", line 196, in run_from_argv self.execute(*args, **options.__dict__) File "django/core/management/base.py", line 223, in execute output = self.handle(*args, **options) File "South-0.7-py2.6.egg/south/management/commands/schemamigration.py", line 92, in handle (k, v) for k, v in freezer.freeze_apps([migrations.app_label()]).items() File "South-0.7-py2.6.egg/south/creator/freezer.py", line 33, in freeze_apps model_defs[model_key(model)] = prep_for_freeze(model) File "South-0.7-py2.6.egg/south/creator/freezer.py", line 65, in prep_for_freeze fields = modelsinspector.get_model_fields(model, m2m=True) File "South-0.7-py2.6.egg/south/modelsinspector.py", line 322, in get_model_fields args, kwargs = introspector(field) File "South-0.7-py2.6.egg/south/modelsinspector.py", line 271, in introspector arg_defs, kwarg_defs = matching_details(field) File "South-0.7-py2.6.egg/south/modelsinspector.py", line 187, in matching_details if any([isinstance(field, x) for x in classes]): TypeError: 'LegacyConnection' object is not iterable Is this related to a recent change in Django 1.2 trunk? How do I fix this? I use this field as follows: class Bar(models.Model): foo = AutoOneToOneField("foo.Foo", primary_key=True, related_name="bar") For reference the field code from django-tagging: class AutoSingleRelatedObjectDescriptor(SingleRelatedObjectDescriptor): def __get__(self, instance, instance_type=None): try: return super(AutoSingleRelatedObjectDescriptor, self).__get__(instance, instance_type) except self.related.model.DoesNotExist: obj = self.related.model(**{self.related.field.name: instance}) obj.save() return obj class AutoOneToOneField(OneToOneField): def contribute_to_related_class(self, cls, related): setattr(cls, related.get_accessor_name(), AutoSingleRelatedObjectDescriptor(related))

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• ImportError: No module named QtWebKit

  - by Hallik

  I am on centos5. I installed python26 source with a make altinstall. Then I did a: yum install qt4 yum install qt4-devel yum install qt4-doc From riverbankcomputing.co.uk I downloaded the source for sip 4.10.2, compiled and installed fine. Then from the same site I downloaded and compiled from source PyQt-x11-4.7.3 Both installs were using the python26 version (/usr/local/bin/python2.6). So configure.py, make, and make install worked with no errors. Finally, I tried to run this script, but got the error in the subject of this post: import sys import signal from PyQt4.QtCore import * from PyQt4.QtGui import * from PyQt4.QtWebKit import QWebPage def onLoadFinished(result): if not result: print "Request failed" sys.exit(1) #screen = QtGui.QDesktopWidget().screenGeometry() size = webpage.mainFrame().contentsSize() # Set the size of the (virtual) browser window webpage.setViewportSize(webpage.mainFrame().contentsSize()) # Paint this frame into an image image = QImage(webpage.viewportSize(), QImage.Format_ARGB32) painter = QPainter(image) webpage.mainFrame().render(painter) painter.end() image.save("output2.png") sys.exit(0) app = QApplication(sys.argv) signal.signal(signal.SIGINT, signal.SIG_DFL) webpage = QWebPage() webpage.connect(webpage, SIGNAL("loadFinished(bool)"), onLoadFinished) webpage.mainFrame().load(QUrl("http://www.google.com")) sys.exit(app.exec_()) Even in the beginning of the configure for pyqt4, I saw it say QtWebKit should be installed, but apparently it's not? What's going on? I just did a find, and it looks like it wasn't installed. What are my options? [root@localhost ~]# find / -name '*QtWebKit*' /root/PyQt-x11-gpl-4.7.3/sip/QtWebKit /root/PyQt-x11-gpl-4.7.3/sip/QtWebKit/QtWebKitmod.sip /root/PyQt-x11-gpl-4.7.3/cfgtest_QtWebKit.cpp

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