> multiprocessing
Please.... That's literally the worst option for python on this planet. For all "just do multiprocessing" the tooling is horrible garbage. Then we get to Twisted and Gunicorn the Spring Framework of Python world.
No, he is in need of writing production quality software together with his medium to big sized dev team and he doesn't want to introduce maintenance burden into his project 10 years from now. Software will get improved during it's lifetime and not overwritten from scratch every 2 years.
- you need a GUI
- you need perf beyond what Python is capable and you identified it clearly in advance
- you can't use numpy / multiprocessing / cython, pypy or they won't give you the perf you need
- you can't find a main hotpath you can optimize with a 5 lines c or rust extension and write 99.99% of your app in python. Or you don't want to bother.
If you ever find yourself in this very use case, then yes, use Java.
But I never found myself in this very precise use case.