[Python-Dev] pyc files, constant folding and borderline portability issues

[Antoine Pitrou]

Cesare Di Mauro <cesare.dimauro <at> a-tono.com> writes:
> def f(): return ['a', ('b', 'c')] * (1 + 2 * 3)
[...]
> 
> With proper constant folding code, both functions can be reduced
> to a single LOAD_CONST and a RETURN_VALUE (or, definitely, by
> a single instruction at all with an advanced peephole optimizer).

Lists are mutable, you can't optimize the creation of list literals by storing
them as singleton constants.

Regards

Antoine.