There have been a couple of very interesting Python recipes added to the Python Cookbook recently.

I love Michele Simionato's Parsing the command line. Parsing the module's docstring for the command line options is a brilliant idea. It feels really pythonic; most other languages, for example, treat indentation as purely documentary, and require you to repeat your code block delimitation using delimitation characters and using indentation, whereas Python treats the indentation as definitive, and doesn't require you to repeat yourself - DRY! Similarly, this recipe treats the docstring's definition of the supported command line options as definitive, and doesn't require you to repeat yourself.

Raymond Hettinger's Bind Globals into Constants at compile time is a lovely example of the kind of thing that Python 2.4's method decorators are designed to support.

I have to say, I'm not that keen on the current decorator syntax; a list of decorators on the line preceding the function/method definition looks ugly to me. I'd prefer the decorators in the def statement somewhere, or inside the function somewhere, like the docstring. But what do I know; Guido's the world-class language designer, after all!