On Apr 23, 4:47 pm, JTimoty <jtim...@gmail.com> wrote: > Hi, > > I've got a weird problem, apparently related to the way python > searches for DLLs on Windows. > > I compiled PyQt4 (no errors) but scripts that use it fail with "DLL > load failed: Invalid access to memory location." > If I play with loading the modules inside the interpreter, I see no > errors. > > Even more, if I use IDLE, running scripts fails. However, if I _first_ > type "from PyQt4 import QtGui" in the python shell, the script > executes without problems. >
I have the batch file that sets up my python 2 and python 3 sessions, each append the site-packages\PyQt4 directory to my %Path%, so that Windows will definitely be able to see the (Py)Qt DLL files located there. If you take a look at the PyQt4 package, __init__.py is just a stub. I'm not familiar with SIP, so I don't know what pyqtconfig.py does. Everything that you import however, is basically the name of a .pyd and .dll file there. E.g. from pyQt4 import QtGui = there is a QtGui.pyd and QtGui.dll module. The .pyd file is what you're really importing, but I don't recall the relationship to the dll files clumped around it. You can probably find it in the python or windows manuals somewhere. > What is the difference between these two cases? How is loading dlls > different in ( $> python script.py ) and just ( $> python )? > > Thanks, > Tim. Example from my system: > vim test.py > python test.py ['My CWD', 'C:\\WINDOWS\\system32\\python26.zip', 'C:\\Dev Files\\Languages\\Python\\26\\DLLs', 'C:\\DevFiles\\Languages\\Python\ \26\\lib', 'C:\ \DevFiles\\Languages\\Python\\26\\lib\\plat-win', 'C:\\DevFiles\ \Languages\\Python\\2 6\\lib\\lib-tk', 'C:\\DevFiles\\Languages\\Python\\26', 'C:\\DevFiles\ \Languages\\Pyt hon\\26\\lib\\site-packages', 'C:\\DevFiles\\Languages\\Python\\26\\lib \\site-package s\\gtk-2.0'] > python Python 2.6.5 (r265:79096, Mar 19 2010, 21:48:26) [MSC v.1500 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> import sys >>> sys.path ['', 'C:\\WINDOWS\\system32\\python26.zip', 'C:\\DevFiles\\Languages\ \Python\\26\\DLL s', 'C:\\DevFiles\\Languages\\Python\\26\\lib', 'C:\\DevFiles\ \Languages\\Python\\26\ \lib\\plat-win', 'C:\\DevFiles\\Languages\\Python\\26\\lib\\lib-tk', 'C:\\DevFiles\\L anguages\\Python\\26', 'C:\\DevFiles\\Languages\\Python\\26\\lib\\site- packages', 'C: \\DevFiles\\Languages\\Python\\26\\lib\\site-packages\\gtk-2.0'] >>> I also note that there is no python26.zip file in %SystemRoot% \system32, just DLL files corresponding to each version of Python I have installed. -- http://mail.python.org/mailman/listinfo/python-list
