Message 259522 - Python tracker (original) (raw)

From the two checks on Python/compile.c:

• expr_ty meth = e->v.Call.func; [...]
• /* Check [...] that

•   the call doesn't have keyword parameters. */

[...]

• /* Check that there are no *varargs types of arguments. */

[...]

I just wonder how many times those kind of checks/guards are done on the whole Cpython code base (the second one seems expensive).

(Naive Idea): Wouldn't be some kind of fast function description (e.g. bit flags or 'e->v.Call.func.desc') generally helpful? The function description could have: 'has_keywords' or 'has_varargs', ...

Thanks in advance!