Python in the Mozilla world

[Eric S. Johansson]

this morning I was looking at Python and XUL.  I was impressed by the very 
interesting projects that were happening around 2005 but it seems like they have 
all died.  Integrating Python at the Mozilla was also very intriguing as it held 
the promise of eliminating JavaScript for extension development (yaaa).  But 
that seems to have died as well.  In fact, it looks like that almost all of the 
alternative languages for browsers have died for lack of interest or something. 
  I was really looking forward to pyax

As a result, I started looking at Python generating JavaScript and I know there 
is pypy but is that really something one can count on or is it more a good 
demonstration of technology?

Just wondering.