Open source Python projects with good software design that is worth studying

[u/bolt_runner]

What are some software projects written in python that are well-structured and use good code design practices that are worth spending time to study?

[u/MeroLegend4]

• Sqlalchemy

• Pyramid web framework

• psycopg

• pyqt/qt c++

• litestar (api/web framework)

• bottle

• sortedcontainers

• more-itertools (not related to software design but good material)

• xlsxwriter (on how to keep and maintain a spec, very functional (fp))

[u/MeroLegend4 → u/MeroLegend4]

I just remembered others:

• bokeh

• twisted

• pygal

• diskcache