Python Ctypes Windows Error 193
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Windowserror: [error 193] %1 Is Not A Valid Win32 Application Dll
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How To Check Python 32 Or 64 Bit
takes a minute: Sign up Error loading DLL in python, not a valid win32 application up vote 17 down vote favorite 2 I am trying to load a DLL in python to call functions. import ctypes from ctypes import *
Oserror: [winerror 193] %1 Is Not A Valid Win32 Application Dll
dsusb = ctypes.WinDLL('c:\python27\dsusb.dll') I get the following error in my stack. C:\Python27>python test.py Traceback (most recent call last): File "test.py", line 4, in dsusb = ctypes.WinDLL('c:\python27\dsusb.dll') File "C:\Python27\lib\ctypes\__init__.py", line 365, in __init__ self._handle = _dlopen(self._name, mode) WindowsError: [Error 193] %1 is not a valid Win32 application I also tried cdll with the same code. I looked up the error and windows says it's due to a path containing spaces... which I do not think is really the problem... Am I python 32 bit loading this DLL wrong or is there something that might be wrong in the dll? python dll ctypes share|improve this question asked Nov 7 '13 at 23:49 jeffpkamp 5001415 2 Make sure to match architecture -- 32-bit Python to 32-bit DLL, and so on. WinDLL switches to the stdcall calling convention. It should be clear from the header which convention to use. –eryksun Nov 8 '13 at 1:34 Use a raw string for the path literal; 'p' and 'd' are ok, but you'll save yourself headaches in general. Or just use forward slashes. The Windows file API translates them to backslashes, except for long Unicode paths that use the '\\?\' prefix. –eryksun Nov 8 '13 at 1:37 I changed the \ to /, with no change in output. I"m not sure, but I believe I am running the 32 bit of python (don't know where to check version on python). Not sure how to read DLL header... Any other ideas? –jeffpkamp Nov 8 '13 at 5:04 1 platform.architecture() returns whether the Python process is 32-bit or 64-bit, but this is just based on the pointer size, which you can do with ctypes.sizeof(ctypes.c_void_p). For the DLL you can use Dependency Walker or Visual Studio's dumpbin. –eryksun Nov 8 '13 at 5:45 1 Looks like the it was due to me opening the 32bit dll with the 64bit python, you should make that an answe
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack python cdll Overflow the company Business Learn more about hiring developers or posting ads with us Stack python 64 bit windows Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community check python version of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up could not load c++ DLL in python up vote 7 down vote favorite I am trying to http://stackoverflow.com/questions/19849077/error-loading-dll-in-python-not-a-valid-win32-application use a C++ .dll in Python, but I can't even load it. I am trying the following python code to load it: from ctypes import cdll mydll = cdll.LoadLibrary('SORT_DLL.dll') But when I try to run this I get: D:\...\src\SORT_DLL\Debug>UseDll.py Traceback (most recent call last): File "D:\...\src\SORT_DLL\Debug\UseDll.py", line 2, in mydll = cdll.LoadLibrary('SORT_DLL.dll') File "C:\Python27\lib\ctypes\__init__.py", line 443, in LoadLibrary return self._dlltype(name) File "C:\Python27\lib\ctypes\__init__.py", line 365, in __init__ self._handle = _dlopen(self._name, mode) http://stackoverflow.com/questions/13265046/could-not-load-c-dll-in-python WindowsError: [Error 193] %1 ist keine zulõssige Win32-Anwendung The last sentence means "%1 is not a valid Win32 application" in English. I already looked it up at http://docs.python.org/2/library/ctypes.html#module-ctypes , but this didn't lead to a solution for my problem. c++ python dll share|improve this question edited Sep 6 at 18:01 DJMcMayhem 1,3441728 asked Nov 7 '12 at 7:30 nimp0u 5315 First, is it actually a cdll rather than a windll? Second, as the documentation says, you're not supposed to add the .dll suffix on Windows. –abarnert Nov 7 '12 at 7:47 Also, one good way to debug ctypes problems loading libraries is to break the steps up explicitly. First try to use the native Win32 LoadLibrary (if you've got PyWin32, that's the easiest way; if not, you can ctypes the system DLL, I think it's user32, or you can use the undocumented wrapper in _ctypes.LoadLibrary) and see if you can get a handle. Then you can try to create a CDLL instance by calling the constructor with the explicit handle and see what happens. If the first step works but the second fails, try some explicit GetProcAddress calls with the handle. –abarnert Nov 7 '12 at 7:55 add a comment| 3 Answers 3 active oldest votes up vote 6
Sign in Pricing Blog Support Search GitHub This repository Watch 519 Star 4,776 Fork 2,573 dmlc/xgboost Code Issues 347 Pull requests 12 Projects 0 https://github.com/dmlc/xgboost/issues/908 Wiki Pulse Graphs New issue installation error on windows: WindowsError: [Error 193] %1 is not a valid Win32 application #908 Closed egallego opened this Issue Mar 4, 2016 · 6 https://mail.python.org/pipermail/python-list/2008-March/499235.html comments Projects None yet Labels None yet Milestone No milestone Assignees No one assigned 6 participants egallego commented Mar 4, 2016 Hi, I am installing xgboost on error 193 windows (Windows 7-64bit) following the instructions given in: http://stackoverflow.com/questions/33749735/how-to-install-xgboost-package-in-python-windows-platform/35480673#35480673 and http://xgboost.readthedocs.org/en/latest/build.html#building-on-windows. It does the process correctly, generating the "xgboost.exe" file on the xgboost folder and the "libxgboost.dll" in the xgboost\lib folder. Python installation also presents no errors during the process. However, when I try to import on python I get the following error: Traceback (most recent call last): File "", 1 is not line 1, in import xgboost File "C:\Python27\lib\site-packages\xgboost-0.4-py2.7.egg\xgboost\__init__.py", line 11, in from .core import DMatrix, Booster File "C:\Python27\lib\site-packages\xgboost-0.4-py2.7.egg\xgboost\core.py", line 83, in _LIB = _load_lib() File "C:\Python27\lib\site-packages\xgboost-0.4-py2.7.egg\xgboost\core.py", line 77, in _load_lib lib = ctypes.cdll.LoadLibrary(lib_path[0]) File "C:\Python27\lib\ctypes\__init__.py", line 443, in LoadLibrary return self._dlltype(name) File "C:\Python27\lib\ctypes\__init__.py", line 365, in __init__ self._handle = _dlopen(self._name, mode) WindowsError: [Error 193] %1 is not a valid Win32 application I am using MinGW-64 as compiler and Cygwin shell to define the istructions. Any suggestions? ShashkovS commented Mar 7, 2016 The same for me on windows 10 x64, Anaconda 3.5, git x64 and mingw x64. Compilation runs without errors. Distributed (Deep) Machine Learning Community member tqchen commented Mar 7, 2016 hmm, seems this also happens for @thirdwing when doing mxnet installations. Let us wait and see if we can progress on #893 to get a MSVC build back Towhid1 commented Mar 31, 2016 same problem like @egallego . I used mingw-64 and git bash . Is there any solution for windows user. :( tommycon commented Apr 29, 2016 I'm having the same issues, the installation
sorted by: [ date ] [ thread ] [ subject ] [ author ] On Mar 31, 12:53 pm, "mimi.vx" wrote: > On Mar 31, 4:22 pm, rdahlstrom wrote: > > > > > So I have a 64 bit Windows 2003 system, running python 2.5.1.1. > > > I can import a Windows .dll (msvcrt or whatever) using ctypes, but > > when attempting to import another application-specific .dll (tibrv.dll > > if anyone is familiar with it), I receive the error WindowsError: > > [Error 193] %1 is not a valid Win32 application. > > > I know there's a Windows on Windows (wow) which allows 32 bit > > processes to run on 64 bit windows - is there a way to work this in > > somehow? Maybe I'm barking up the wrong tree? > > > Code is simple, and works on 32 bit systems no > > > from ctypes import * > > #this doesn't work > > tibrv = cdll.tibrv > > #this does work > > msvcrt = cdll.msvcrt > > all dlls and python must be 32bit or 64bit, no mixed ... Crap, no way to make a 32 bit load, even using the wowexec? Previous message (by thread): CTypes, 64 bit windows, 32 bit dll Next message (by thread): CTypes, 64 bit windows, 32 bit dll Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] More information about the Python-list mailing list