I had exactly the same problem and it is now solved by using PyEval_SaveThread() immediately after PyEval_InitThreads(), as you suggest above. However, my actual problem was that I used PyEval_InitThreads() after PyInitialise() which then caused PyGILState_Ensure() to block when called from different, subsequent native threads. In summary, this is what I do now: There is … Read more
Call PyObject_New(), followed by PyObject_Init(). EDIT: The best way is to call the class object, just like in Python itself: /* Pass two arguments, a string and an int. */ PyObject *argList = Py_BuildValue(“si”, “hello”, 42); /* Call the class object. */ PyObject *obj = PyObject_CallObject((PyObject *) &pyfoo_T, argList); /* Release the argument list. */ … Read more
Here is a C++ friendly solution I have developed lately. I explain a few details of it on my blog: Python sys.stdout redirection in C++ where I also point to repository at my GitHub where most recent version can be found. Here is complete example based on the current code at the time of posting … Read more
As explained before, using PyRun_SimpleString seems to be a bad idea. You should definitely use the methods provided by the C-API (http://docs.python.org/c-api/). Reading the introduction is the first thing to do to understand the way it works. First, you have to learn about PyObject that is the basic object for the C API. It can … Read more