implicit namespace packages

[fkloosterman]

According to the documentation, support for implicit namespace packages (Python 3.3+, PEP 420) is currently not implemented. As I am making heavy use of implicit namespace packages, I would really like to see jedi support this. Is there a plan or already work done to add support for this feature in the near future? If not, I can try myself if someone can point me to the relevant code.

[davidhalter]

I'm not planning to support this for now, because I'm not using it myself, currently (I'm working a lot with mixed Py2/3 code bases). I would like to see this implemented as well.

Implicit namespace packages will not be extremely easy to add I think. You probably have to touch jedi.evaluate.imports and maybe the jedi._compatibility module. I'm not really sure how I would tackle this one.

[davidhalter]

Maybe also related: #122.

[fkloosterman]

The Importer class uses pkgutil.iter_modules to discover packages, but this function explicitly looks for a init.py (see also this issue in the python bug tracker: https://bugs.python.org/issue29258). I suppose, jedi could either provide its own enhanced version of pkgutil.iter_modules, or wait until the pkgutil issue gets resolved upstream.

[davidhalter]

or wait until the pkgutil issue gets resolved upstream.

That's probably not possible, because that bug is not going into 2.7 and I'm thinking that it's probably also only fixed for 3.6+ and maybe 3.5. This means that it's going to take a long time until namespace packages would actually be working generally in Jedi. Like 5 years until these versions are not really used/supported anymore.