The trouble with relative terms is you have to know what you're comparing. Compared to the BASIC I used to use on my zx spectrum, python on a modern CPU is very fast indeed, but that's not saying much.
Over the last 10 years, I’ve learned something:
Every single person claiming that “Python is slow” tends to be a newcomer with no experience building software. They are usually dropouts of a bad JavaScript bootcamp.
More importantly, if you think that Python isn’t a “production-capable” language, you are definitely too early in your career.