namespace.py

In a nutshell, namespace.py allows you to create composite namespace packages without altering any submodule.

>>> import namespace
>>> ns = namespace.Namespace()
>>> ns.proxy("ns.path", "os.path")
>>> import ns.path
>>> import sys
>>> ns.path == sys.modules["os.path"]
True

The general idea here is that you'd create a PyPI package for the namespace and then attach the individual subpackages to the namespace. Something like:

# mynamespace.py
import namespace
ns = namespace.Namespace()
ns.proxy("mynamespace.web", "django")

And then client packages could use this namespace package as:

import mynamespace.web.forms as forms

That's perhaps not the best example, but hopefully it gets the idea across.

Other caveats is that this doesn't allow for magical addition to the namespace if a package elects to be in it. I'm not feeling creative enough to think of a good solution to this. I'm pretty sure it could be done with a hook in setuptools though.