*Advanced* Python book?

[mk]

Hello everyone,

I looked for it I swear, but just can't find it.

Most Python books seem to focus on examples of how to call functions 
from standard library. I don't need that, I have online Python 
documentation for that.

I mean really advanced mental gymnastics, like gory details of how 
Python objects operate, how to exploit its dynamic capabilities, dos and 
donts with particular Python objects, advanced tricks, everything from 
chained decorators to metaprogramming. Dive Into Python comes closest to 
this ideal from what I have found, but still not far enough.

Anybody found such holy grail?

Regards,
mk