Rationale for read-only property of co_code

[João Neves]

Hello all,

I've got this question that has been nagging me for a few days now.
What are the reasons for us to have co_code as read-only? I've been
trying to get some info about it, but I kept hitting the wall.

Correct me if I'm wrong, but as far as I understand, co_code
represents the compiled bytecode that should be run when, for
instance, a function is called. Wouldn't it be beneficial for
programmers to be able to change the bytecode in runtime? I mean, one
can't, as far as I'm aware, change the bytecode by accident, so if the
programmer would wish to change a function at runtime, he could do so
at his own risk.

If there is a higher reason behind the read-only property of co_code,
I definitely fail to see it, and would like to know what it is. If
not, why aren't we allowed to write into it?

Thanks in advance,

João Neves