[Python-Dev] Another approach for the import mechanism

[Martin v. Löwis]

"Moore, Paul" <Paul.Moore@atosorigin.com> writes:

> >     __path__[0] = os.path.join(__path__[0],'package.zip')
> >
> >   package.zip
> 
> Of course, if __path__[0] was originally an object, this would
> break...

What do you mean with "was originally", and what do you mean with
"would break"?

__path__[0] cannot be an object originally, because the package loader
inserts a string, always.

Even if it was a (non-string) object, I can't see how this would
break. os.path.join would continue to work if the object is a string
subclass, or atleast supports len, __getitem__, and __add__.

The result would be a string, which would be converted to a zipimport
on the next package contents import.

> I think that the objects-on-sys.path issue has now been resolved,
> but this probably acts as a reasonable "real world" example of what
> needs to be supported. (Unless I've misunderstood things again :-))

I recommend you try the patch, to see how it works in the real
world.

Regards,
Martin