[PyQt] Any Large PyQt Projects?

[Brent Villalobos]

I'm looking for examples from people who have written large PyQt 
applications and I would like to hear your opinions on what worked well 
and what did not specifically with choosing python over C/C++.  In 
particular, how does your python application handle tasks that require a 
lot of computation?  How does it handle multiple thread performance 
given python's limitations on only running on one CPU (global 
interpreter lock)?  I don't need too much detail (obviously nothing 
proprietary), but I just want to know if anyone has any "red flags" that 
people should be aware of before writing a large python gui app with 
things like openGL contexts and heavy mathematical computation?

Let's make this interesting and see who has written the largest PyQt 
application.  How many lines of code are we talking about?  10,000?  
100,000? 1,000,000!!!!???
-Brent