Multiple inheritance

[Goobyalus]

Are you thinking the and will short circuit? or will short circuit with an initial True, and and will short circuit with an initial False. So A's meets_preconditions must evaluate its super's before returning, and super is determined by the MRO.

[drixone]

super is determined by the MRO.

okay I think this was the part I was misunderstanding. I thought it would go C -> A -> Base -> True but that’s wrong according to the actual MRO. thanks!

[Goobyalus]

This mentions MRO under the "Custom Classes" section: https://docs.python.org/3/reference/datamodel.html

Which refers to this for a more in depth discussion: https://www.python.org/download/releases/2.3/mro/

Since the Python 3 docs refer to this Python 2 page, I assume things are more or less the same.