Set a flag on the function or a global?

[Chris Angelico]

On Tue, Jun 16, 2015 at 9:57 AM, Steven D'Aprano
<steve+comp.lang.python at pearwood.info> wrote:
> I have two ideas for this, a module-level global, or a flag set on the
> function object itself. Remember that the usual way of using this will be
> "from module import edir", there are two obvious ways to set the global:
>
> import module
> module.dunders = False
>
> # -or-
>
> edir.__globals__['dunders'] = False
>
>
> Alternatively, I can use a flag set on the function object itself:
>
> edir.dunders = False
>

For most situations, the last one is extremely surprising - attributes
on functions aren't normally meant to be changed by outside callers,
it always feels wrong (they belong to the function itself). But since
this is interactive, I'd advise going for the absolute simplest, which
this would be. Go for the function attribute IMO.

ChrisA