[Python-Dev] how important is setting co_filename for a module being imported to what __file__ is set to?

[Antoine Pitrou]

Brett Cannon <brett <at> python.org> writes:
> 
> Now I can't change
> co_filename from Python as it's a read-only attribute and thus can't
> match this functionality in importlib w/o creating some custom code to
> allow me to specify the co_filename somewhere

Why can't we simply make co_filename a writable attribute instead of inventing
some complicated API?