Google and Python

[TheFlyingDutchman]

Around 2000 I heard that Google was using Python to some extent. Now I
see that Guido Van Rossum works for them as well as Alex Martellis who
has the title "Uber Technical Lead" which seems to imply some fairly
heavy Python usage there. I was wondering what is done at Google with
Python and which Python "environments/applications" (Zope, TurboGears,
mod_python ...) are in use, and what is done with other languages, and
which other languages are they using.