Most the the business I do is rewriting old working python prototypes to C++. Python sucks, is slow and leaks. The new C++ code does not leak, meets our performance requirements, processes items instead of 36 hour in 8 hours, and such.

We are also rewriting all the old python UI in typescript. That went not so easy yet.

And when there are still old simple python helpers, I rewrite them into perl, because this will continue to run in the next years, unlike python.