I always scoff a bit when I see Python and Optimization/Fast/Efficiency in one statement. IMHO Python should only be used for non-complex scripts. For other things, just use better suited languages.
My article describes the tricks which are used inside the Python interpreter. Every improvement in the interpreter saves an insane amount of computing power considering its popularity.
I have used python for years and years in very high performance setups. Usually uWSGi behind openresty.
On the other hand, I scoff when I see PHP used for anything whatsoever. It is a god-awful language with terrible performance in high-usage practice. /rant
