ctypes windows error 193
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Error 193 1 Is Not A Valid Win32 ApplicationTags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like how to check python 32 or 64 bit you, helping each other. Join them; it only 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 error 193 1 is not a valid win32 application dev c++ python to call functions. import ctypes from ctypes import * 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
Python Ctypes Windows Error 193to a path containing spaces... which I do not think is really the problem... Am I 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 Stud
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Python 64 Bit Windowsother. Join them; it only takes a minute: Sign up Error 193 when loading a DLL with Python up vote 2 down vote favorite We are trying to connect to an external piece of hardware using a DLL http://stackoverflow.com/questions/19849077/error-loading-dll-in-python-not-a-valid-win32-application and faced a problem we were not able to solve so far. Our platform is Windows 7, 64 bit, and we are using Python 2.7, also 64 bit, to write a driver. The DLL we are using is also 64 bit (we double checked that with the PE Deconstructor). We use ctypes to load the DLL, specifically: import ctypes ctypes.cdll.LoadLibrary('dllpath') ... However, we get the error message [Error 193] %1 is not a valid Win32 application. The same http://stackoverflow.com/questions/27379529/error-193-when-loading-a-dll-with-python happens if we try to load 32 bit DLLs or use the commands pydll, oledll or windll. Do you have an idea how we could load the DLL or what the solution might be? We would be very grateful for a helpful answer, Best, Florian python dll ctypes share|improve this question edited Dec 9 '14 at 16:19 eryksun 16.3k23648 asked Dec 9 '14 at 12:58 Florian Lüthi 111 Is your python.exe visible in system variables path? –Aleksandar Dec 9 '14 at 14:25 Sounds like a bitness mismatch. Either in the DLL or its dependencies. Check using Dependency Viewer, for instance. –David Heffernan Dec 9 '14 at 14:28 1 cdll and windll are loaders that wrap CDLL and WinDLL, to cache loaded libraries and make it easy to access Windows DLLs when the base filename is a syntactically valid identifier, e.g. cdll.msvcr100. The LoadLibrary method just calls the wrapped class and doesn't cache the library, so you may as well use ctypes.CDLL('dllpath'). –eryksun Dec 9 '14 at 16:10 1 As to loading the DLL, there's no difference between CDLL and WinDLL. The latter just sets a flag on function pointers to use stdcall instead of cdecl. In 64-bit Windows there's no difference anyway since there's only one standard calling convention for exported functions. –eryksun Dec 9 '14 at 16:12 Are all the dependencies
Support Search GitHub This repository Watch 512 Star 4,565 Fork 2,466 dmlc/xgboost Code Issues 321 Pull requests 15 Projects 0 Wiki Pulse Graphs New issue https://github.com/dmlc/xgboost/issues/908 installation error on windows: WindowsError: [Error 193] %1 is not a valid Win32 application #908 Closed egallego opened this Issue Mar 4, 2016 · 6 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 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. error 193 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 "