Calling Python from Javascript?

[Kenneth McDonald]

I know that there's some work out there to let Python make use of 
Javascript (Spidermonkey) via (I assume) some sort of bridging C/C++ 
code. Anyone know of efforts to allow the reverse? I'd really like to 
make use of Python when doing Mozilla DOM programming, and I can never 
get a clear idea of when PyXPCOM might be available to those of us who 
don't know the ins and outs of compiling Mozilla, and its XPCOM 
structures. So if there was an easy way to simply and quickly pass even 
just strings back and forth between Python and Moz Javascript, that 
would make certain things a heck of a lot easier.

Thanks,
Ken