Python 2.2 or 3.5

[Rustom Mody]

At https://docs.python.org/3.5/faq/extending.html#can-i-create-an-object-class-with-some-methods-implemented-in-c-and-others-in-python-e-g-through-inheritance

it says
In Python 2.2, you can inherit from built-in classes such as int, list, dict, etc.

So is it 3.5 or 2.2?

For some reason google takes me to the 3.3 docs
Replacing the 3.3 by 3.5 seems to keep the same entry