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Editorial Team
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Asked: 2026-06-11T08:58:56+00:00

I am new to Python. I wanted to use svm for my project. I

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I am new to Python. I wanted to use svm for my project. I was using libsvm 3.12 but when i do ..

from svm import *

then i get the following error : 

Traceback (most recent call last):

  File "C:/Python27/main.py", line 31, in 
    from svm import *
  File "C:/Python27\svm.py", line 12, in 
    libsvm = CDLL(find_library('libsvm'))
  File "C:\Python27\lib\ctypes\__init__.py", line 353, in __init__
    self._handle = _dlopen(self._name, mode)

WindowsError: [Error 193] %1 is not a valid Win32 application

What should I do?

The libsvm README file suggested that I copy libsvm.dll into the system32 folder, which I did .. but still I am getting the error. I am using 64 bit Python. Maybe that is causing the problem?

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1 Answer

  1. Editorial Team

    I just had the same issue.

    As Velociraptors posted in VLC Python Bindings — Error 193:

    I’m going to guess that the problem is trying to load a 32-bit DLL from a 64-bit process. You may be able to fix it by using a 32-bit Python build.

    We solved the issue by downloading libSVM for python from http://www.lfd.uci.edu/~gohlke/pythonlibs/#libsvm

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