Error while trying to load .dll into Python “The specified module could not be found”

Question

I've written ac code and compiled it into a dll, and now I'm trying to import it to Python, then I get the error "OSError: [WinError 126] The specified module could not be found".

I have already searched for solutions: in the code I use some other DLLs:

python36.dll
ioterasdk.dll
KERNEL32.dll

so I checked that all of them are included (except for KERNEL32.dll that I don't know how to check), and I also added "python36.dll"'s location to the System Environment Variables.

The code:

from ctypes import *
mydll = cdll.LoadLibrary("D:\\full\\path\\BlueTeraPy.dll")

I get this error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\admin\AppData\Local\Programs\Python\Python36-32\lib\ctypes\__init__.py", line 426, in LoadLibrary
    return self._dlltype(name)
  File "C:\Users\admin\AppData\Local\Programs\Python\Python36-32\lib\ctypes\__init__.py", line 348, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: [WinError 126] The specified module could not be found

I'm new to Stack Overflow and to DLLs in general, so if you need more information please tell. Thank you

Answer 1

You can't load the library itself, you must find the library in the dll.

import ctypes import *
from ctypes.util import *
dll = find_library("D:\\full\\path\\BlueTeraPy.dll")
lib = cdll.LoadLibrary(dll)