References last far longer than they should, because the interpreter doesn't always let go of references to returned results.
There used to be a problem with certain statements being executed as expressions and printed, but I'm told that's been fixed.
The encoding is always Latin-1. Always. Hope you don't use Unicode literals.
It's not Python. It's Python plus other things. That's always a Bad Thing because it precludes taking results from the interpreter and using them in plain Python contexts. web2py also has this problem.
