[Python-Dev] confusing exec error message in 3.0

[Greg Ewing]

Steven D'Aprano wrote:

> I don't think M.__file__ should lie and say it was loaded from a file 
> that it wasn't loaded from. It's useful to be able to look at a module 
> and see what file it was actually loaded from.

On the other hand, it could be useful to be able to find
the source file for a module, regardless of whether it
was loaded from a .py, .pyc or .pyo.

Maybe there should be a __source__ attribute for that?

Or is os.path.splitext(M.__file__)[0] + ".py" considered
good enough for that?

-- 
Greg