[pjmlp]

Then it is time to learn some clever use of Python metaprogramming, metaclasses, how slots interact with old style attributes, old and new style classes, clever tricks with magical methods, stackless vs regular Python, multiple ways to format strings, arithmetic semantic changes,...

[dragonwriter]

I was aware of all those things when I made the original statement, thank you.

[uryga]

> old style attributes, old and new style classes

pretty sure that's only a factor if you need to deal with Python 2

[pjmlp]

I expect any Developer X, to comfortably understand a random codebase of language X.