Any Python code from Armin Ronacher (https://github.com/mitsuhiko https://github.com/mitsuhiko) or Kenneth Reitz (https://github.com/kennethreitz https://github

Any Python code from Armin Ronacher (https://github.com/mitsuhiko https://github.com/mitsuhiko) or Kenneth Reitz (https://github.com/kennethreitz https://github.com/kennethreitz). They have really clean code, popular packages and are open about their decisions. It is interesting to understand their design thinking.