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cpython-2.7header-filesshared-objects

C header Python

I' m trying to import a .so library into a python code to use c functions. I think using 

from ctypes import *
import ctypes
lib = CDLL('./libcaenhvwrapper.so.5.56')

is working fine. I need to use some user defined types which are defined in a header file but I cannot access them.

thank you in advance

Solution

  • The types are not in the .so file that the ctypes module loads.

    C types don't work like that, they're declared in the header and you must have the header to use a (C) library, even from C.

    You're going to have to use the various ctypes APIs to re-create the types in Python. See this part of the tutorial, for instance, for how to work with struct and union types.