I'm a newbie in the Python and GAE world and I have a question.
With Python the normal approach is to only optimize the code when needed, fixing the more urgent bottlenecks.
And one of the ways to achieve that is by rewriting the most critical parts of the program in C.

By using GAE are we losing this possibility forever?
Since [Google's Go language](http://golang.org/) is now (or it will be as soon as it is compiled more efficiently) the fastest language in GAE, will there be a way to mix Python and Go in the same app?
What other ways could be used to achieve a similar result?