[Python-Dev] FAT Python (lack of) performance

[Andrew Barnert]

On Jan 25, 2016, at 13:43, Victor Stinner <victor.stinner at gmail.com> wrote:
> 
> According to microbenchmarks, the most promising optimizations are
> functions inlining (Python function calls are slow :-/) and specialize
> the code for the type of arguments.

Can you specialize a function with a C API function, or only with bytecode? I'm not sure how much benefit you'd get out of specializing list vs. generic iterable or int vs. whatever from an AST transform, but substituting raw C code, on the other hand...