What is considered an "advanced" topic in Python?

[sohcahtoa82 at gmail.com]

On Friday, May 29, 2015 at 9:02:06 AM UTC-7, Mike Driscoll wrote:
> Hi,
> 
> I've been asked on several occasions to write about intermediate or advanced topics in Python and I was wondering what the community considers to be "intermediate" or "advanced". I realize we're all growing in our abilities with the language, so this is going to be very subjective, but I am still curious what my fellow Python developers think about this topic.
> 
> Thanks,
> Mike

Metaclasses.

I've read about them.  I still don't understand them, why you would want them, and what you gain from them.