Note that I'm constrained to use Python 2.6. I have a Python 2.6 application that uses a C++ multi-threaded API library built with boost-python. My use-case was simply to execute a Python function callback from a C++ boost thread but despite the many different attempts and researching all the available online resources I haven't found any way that works. All the proposed solutions revolve around a different combination of the functions: Py_Initialize*, PyEval_InitThreads, PyGILState_Ensure, PyGILState_Release but after trying all possible combinations nothing works in practice e.g.
Therefore, this question: how can I start and run a Python thread from C++? I basically want to: create it, run it with a Python target function object and forget about it.
Is that possible?
The answer to the OP How to call Python from a boost thread? also answers this OP or DP (Derived:)). It clearly demonstrates how to start a thread from C++ that callbacks to Python. I have tested it and works perfectly though needs adaptation for pre-C++11. It uses Boost Python, is indeed an all inclusive 5* answer and the example source code is here.