Haha, I'm touting my own ten year old horn: https://news.ycombinator.com/item?id=12749717 Also see steveklabnik's comments. They are relevant.

Back then the C implementation of the (i.e., "one") micro benchmark beat the Rust implementation. I could squeeze out more performance by precisely controlling the loop unrolling. Nowadays, I don't really care and operate under the assumption that "Python is faster than $X and if it is not, it is still fast enough!"