As parent mentioned, python!=cpython. You've got pypy, cython, typed cython, nuitka, and probably some others I forgot about. Without knowing what you're trying to achieve and what you've tried, "extremely slow" is pretty hard to accept.
Re:JavaScript is Good, Actually
by tigershark on Wednesday May 16, 2018 @10:25AM
(#17082630)
Cython is a subset of Python, while PyPy has shitty C interop if nothing changed from the last time that I checked.
Ergo in a general sense Python = CPython.
If you have specific needs you may want to consider the alternatives, but saying that Cython is Python is at least shady if not completely deceptive.
That python is slow is utterly irrelevant. You would never deploy an unoptimized Python codebase into production if you cared about performance. You would profile the code and optimize the hot paths with the appropriate technology, be it numba-jit, cython, numpy, cffi, or any of the other many ways you can easily optimize Python
I wouldn't but I've seen a lot of people who will. If you have code that runs, why spend extra money to optimise it? Hardware is cheap and the cloud allow to scale as much as you want (not my opinion obviously but I've heard that more than once and I'm not even directly involved in these kind of decisions).
Python is really neat to quickly experiment platform independent but it's definitely extremely slow.