Set a flag on the function or a global?

[Paul Rubin]

Steven D'Aprano <steve+comp.lang.python at pearwood.info> writes:
> Thoughts and feedback? Please vote: a module global, or a flag on the 
> object? Please give reasons, and remember that the function is intended 
> for interactive use.

Both are bad.  More state to remember, ugh.  Instead have separate entry
points for filtering or not filtering the dunders.  Something like:

  edir(obj) = no dunders
  edir_(obj) = dunders.  

If you also support the keyword arg, then you could have

  edir_(obj)=functools.partial(edir,dunders=True).