Plagued with random Bus Errors in Python on my Tiger install, and wanting to upgrade to Python 2.5.1 (as Python 2.5 is not supported by Google App Engine and the SDK has errors in it that won't be fixed), I decided to upgrade to Leopard again. I had initially upgraded right after Leopard was released, [...]

iPython is an awesome extended Python shell that gives you goodies like tab completion for instances, history tracing (so you can easily copy interactive sessions as doctests), etc. And, if you install it, your Django project on Google App Engine will automatically start using it instead of the regular python shell when you use ./manage.py [...]