this is a WIP.

@ncw, for dir(), I need to be able to get at the content of the local scope.
how would I do that from within builtin_dir ?

The way I've done that in the past, eg for implementing locals() is to implement them as InternalMethods.

Eg here is where the magic is...

This is where the other magic is!

$ git grep InternalMethodLocals
builtin/builtin.go:             py.MustNewMethod("locals", py.InternalMethodLocals, 0, locals_doc),
py/method.go:   InternalMethodLocals
vm/eval.go:             case py.InternalMethodLocals:

That is the only way I could find to avoid using global variables etc. It might be too limiting eventually.

@sbinet after the py.Context merge, I could look at this out if we think dir() is worth it.

@sbinet lmk if this is worth adding/improving so we can work towards a cleared PR section. Also, any suggestions on the next version/tag? I think we're worthy of a 0.1 or 1.0 -- open to discussion.

in order to get the nice discoverability look and feel of CPython into gpython, having a working dir() builtin is definitely a plus.

but as we survived w/o it for almost 4 years, I don't think cleaning up this PR should be a blocker for the next tagged version of gpython.