examples of beautiful Python code for learning

Question

Python

I've been learning Python for a year and a half.
I use it for web applications.
Recommend any, frameworks, or others with beautiful, high-quality source code.

I expect to find in this code interesting and new techniques and approaches for myself in order to take them into service.

Answer 1

I was interested in exploring the insides of Flask / Werkzeug and the related projects of the Pocoo umbrella brand .
+ SQLAlchemy and WTForms

Answer 2

I am learning Tornado and WebPy

Answer 3

Python Koans is not exactly a lib or a framework. This is a type of exercise in using the various goodies of the language, the syntactic sugars.