The key wording is "optimized C". CPython is already executed in pure C, the only difference it being a very slow, unoptimized C. The code for simple adding o

The key wording is "optimized C". CPython is already executed in pure C, the only difference it being a very slow, unoptimized C. The code for simple adding of two numbers is insane. It jumps through enough hoops to make you wonder how is it even running everything else.