Suggest Conventions or Style for use with ArcPy

This is probably a very open-ended question, but I'm looking for any available resources on proper style and convention with respect to ArcPy scripts. In other words, could you point me to some examples of well-written ArcPy?

To be clear, I'm looking for style and convention tips specific to what makes for effective ArcPy. For example, using with statements for cursors is good practice, as far as I know.

Any materials are greatly appreciated here. Looking forward to seeing some well-executed ArcPy examples.

Thanks.