Python is extremely slow for some tasks. I was surprised to discover how slow when I ran some benchmarks, despite having used python for many years at the time. It has been improving lately, but here is a blog post I made on the topic quite a few years ago that has some interesting comparisons: https://gist.github.com/vishvananda/7a2f1942d0e9ffff4093
Just reran the benchmarks from 10 years ago, python is only 37X slower than C on the benchmark now, and the go version is running faster than the C version. Python still has big productivity wins of course...
