Finding a module's sub modules at runtime

[Joshua J. Kugler]

[If this is documented somewhere, please just point me there.  I googled on
the terms that made sense to me, and didn't find anything.]

So, I have:

ModTest
        __init__.py
        AModule.py
        BModule.py
        CModule.py

All works fine.  However, when I import ModTest, I would like it to discover
and store the names of the modules beneath it, and construct a list, say
mod_list, that I can access later to find the names of the sub-modules in
this module.  Kind of setting __all__ at run time, I guess (yes, I'm aware
of the case caveats).

I figured __init__.py coudl take its own __path__ and walk the directory to
find all .py files other than __init__.py, but that seemed hackish.  Is
there an "official" way to do this?  Or a better way?

To give "context:" all the modules will have classes that have the same
name, same methods etc.  One of the modules will be picked depending on
which implementation is needed.

Thanks!

j

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Joshua Kugler
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