I have a C extension I want to call from Python. The C extension takes a pointer to an array of pointers and three pointers to arrays of int64_t values. I have called this C extension using a wrapper written in C and here is how I do it in C (in relevant part):
I have written a simple function in C that raises a given number to a given power. The function returns the correct value when I call it in C, but when I call it in Python it returns a different, incorrect value.
I wrote a dll library in c, compile with vs2017 64-bit, and try to load it with python3.6 64-bit. However the object’s member variable’s address got truncated to 32-bit.
I work with a python lib that imports a C shared library that prints on stdout. I want a clean output in order to use it with pipes or to redirect in files. The prints are done outside of python, in the shared library.
I want to call a C library from a Python application. I don’t want to wrap the whole API, only the functions and datatypes that are relevant to my case. As I see it, I have three choices:
I’m trying to convert C function for python 3.6 use.
I’m just getting started with ctypes and would like to use a C++ class that I have exported in a dll file from within python using ctypes.
So lets say my C++ code looks something like this:
I am loading a dll in python using following code:
I’m trying to access some functions in a dll (nss3.dll) that ships with Firefox web browser. To handle this task I have used ctypes in Python. The problem is that it fails at the initial point which is when loading the dll in to the memory.
I am trying to load a DLL in python to call functions. import ctypes from ctypes import * dsusb = ctypes.WinDLL('c:python27dsusb.dll') I get the following error in my stack. C:Python27>python test.py Traceback (most recent call last): File "test.py", line 4, in <module> dsusb = ctypes.WinDLL('c:python27dsusb.dll') File "C:Python27libctypes__init__.py", line 365, in __init__ self._handle = _dlopen(self._name, mode) … Read more