pythonctypesdigital-persona-sdk

Use Digital Persona DLL Library in Linux server

I don't have much experience with Linux OS.

I managed to use ctypes in Python to access a function in Digital Persona SDK DLL file using this code:

import ctypes
dpfjDll = ctypes.CDLL("dpfj.dll")
.....

Testing of calling the function worked perfectly on my windows machine, but when I deployed the app to our linux server, I got the following error:

OSError: dpfj.dll: cannot open shared object file: No such file or directory

Any idea what is going on?

Update: I tried for testing to set the absolute path temporarily for the file, and now I am getting this error message:

OSError: /home/......./main/helper/dpfj.dll: invalid ELF header
Solution

  • I fixed the problem by installing Digital Persona SDK on our Linux server and used the following code for loading the library:

    import ctypes
dpfjDll = ctypes.CDLL("libdpfj.so.3.1.0")