weeksie

So this is a good place to list really nice codebases. sqlite is a fantastic piece of source code, totally worth reading.

japhyr

For Python, I really like reading Kenneth Reitz' code. For example the Requests library is pretty good reading [0]. When reading code, I like to have the documentation handy as well [1].

The Django project is also good reading. [2], [3]

[0] - Requests code: https://github.com/kennethreitz/requests

[1] - Requests documentation: http://docs.python-requests.org/en/master/

[2] - Django code: https://github.com/django/django

[3] - Django documentation: https://docs.djangoproject.com/en/1.10/

matt_o

Django does have some really clean code and it is very easy to navigate. I feel like I only grokked Django after I started going through its internals.

I also highly recommend giving Tornado[0] and Bottle[1] a read. Outside of the the web stuff, Sqlalchemy[2] is good

[0] - https://github.com/tornadoweb/tornado [1] - https://github.com/bottlepy/bottle [2] - https://github.com/zzzeek/sqlalchemy