I think you're forgetting the scenario where you have a lot of Python code and only a small part is performance critical. You can speed that part up with someth

I think you're forgetting the scenario where you have a lot of Python code and only a small part is performance critical. You can speed that part up with something like Cython, and directly integrate it with the rest of the code. If you would have to rewrite it all in C++ it would be a tedious and buggy process, the same goes for ad-hoc interfacing with text files.