For identifying senders of a signal, I would recommend the blog post that just came up on planet.python.org

http://pysnippet.blogspot.com/2010/0...r-service.html

I'm wanting to write my new apps in PyQt. As such I have a roadmap of programs that stress various corner cases that I plan to port. I plan to start a blog and make a series about the lessons learned.

• Gonvert (Learning basic PyQt): Already Ported
• ejpi (Learning custom widgets for my pie menus)
• Dialcentral (Threading)
• An unnamed unreleased piece of software (all of the above plus GStreamer)

Eventually we should organize all of these into a wiki page (like what I did for Python and performance).