Error when loading module in Python: OSError: [WinError 126] The specified module could not be found

Error when loading module in Python: OSError: [WinError 126] The specified module could not be found

By : user2185281
Date : November 21 2020, 04:01 AM
I wish this helpful for you 'libcuba.so' is a DLL file for Linux, not for Windows. Please make sure you installed distribution for Windows, not the Linux one.
code :

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Python GetModuleHandleW OSError: [WinError 126] The specified module could not be found

Python GetModuleHandleW OSError: [WinError 126] The specified module could not be found

By : dhudhela swathi
Date : March 29 2020, 07:55 AM
Hope this helps It should be windll.kernel32.GetModuleHandleW("kernel32.dll"). But please don't use windll when defining function prototypes because it's global to all modules that use ctypes, which leads to conflicting prototypes. Use kernel32 = WinDLL('kernel32', use_last_error=True). The DLL handle is kernel32._handle.
For your 2nd problem, first and foremost there's no reason to ever directly call GetProcAddress (or dlsym on POSIX systems) when using ctypes. But in principle it would be as follows:
code :
kernel32 = ctypes.WinDLL('kernel32', use_last_error=True)   
kernel32.GetProcAddress.restype = ctypes.c_void_p
kernel32.GetProcAddress.argtypes = (wintypes.HMODULE, wintypes.LPCSTR)

LoadLibAddy = kernel32.GetProcAddress(kernel32._handle, b'LoadLibraryA')
if not LoadLibAddy:
    raise ctypes.WinError(ctypes.get_last_error())
Install Shapely: OSError: [WinError 126] The specified module could not be found

Install Shapely: OSError: [WinError 126] The specified module could not be found

By : user6939454
Date : March 29 2020, 07:55 AM
Any of those help Download WHL file using http://www.lfd.uci.edu/~gohlke/pythonlibs/#shapely
code :
python -m pip install Shapely-1.5.17-cp36-cp36m-win_amd64.whl
pip install shapely==1.6b2
OSError: [WinError 126] module could not be found

OSError: [WinError 126] module could not be found

By : zzh
Date : March 29 2020, 07:55 AM
it helps some times Ok finally solved!
I got to know that such error could be thrown when the file dependencies are not satisfied or not found. So to check the dependencies you go first to Visual Studio Prompt and then navigate to the folder where libmxnet.dll exists and run the following command
Python: module not found (OSError: [WinError 126]) when loading a DLL using FFTW

Python: module not found (OSError: [WinError 126]) when loading a DLL using FFTW

By : user2788293
Date : March 29 2020, 07:55 AM
wish help you to fix your issue Most likely it is caused due to the fact that the libfftw3 dll(s) can't be found.
For a short test, the Python program and all DLLs can simply be stored in the same directory. Then start your command prompt and change to this directory(!) and start your Python program from the command line by typing python . So all required DLLs are in the current directory and can be found.
code :
#include "windows.h"
#include "fftw3.h"

#define NUM_POINTS 128

                       DWORD  ul_reason_for_call,
                       LPVOID lpReserved
    switch (ul_reason_for_call)
    return TRUE;

__declspec(dllexport) char *plan() {
    fftw_complex signal[NUM_POINTS];
    fftw_complex result[NUM_POINTS];

    fftw_plan plan = fftw_plan_dft_1d(NUM_POINTS,

    return fftw_sprint_plan(plan);
import ctypes

libc = ctypes.cdll.LoadLibrary('C:\\Users\\stephan\\Documents\\pyfftw\\Library_C\\x64\\Debug\\Library_C.dll')

libc.plan.restype = ctypes.c_char_p

libc = ctypes.cdll.LoadLibrary('Library_C.dll')
cd <dir-with-python-program-and-dlls>
python test.py
b'(dft-ct-dit/8\n  (dftw-direct-8/12 "t3fv_8_avx")\n  (dft-direct-16-x8 "n2fv_16_avx"))'
Python CFFI module fails when loading dll: OSError 0x7e

Python CFFI module fails when loading dll: OSError 0x7e

By : Rajeswaran Kesavan
Date : March 29 2020, 07:55 AM
this one helps. I was getting similar errors (conflicting DLLs) and it was finally resolved simply by moving the path to GTK (ex: "C:\gtk\bin") to the beginning of my environment variables.
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