Python type hints are not used at runtime ... (Also, we’d normally make such a thing into a method for the class, but it’s broken out separately here for the purpose of illustration.) ...

The ‘type’ metaclass The built-in metaclass in Python is type. Surprisingly, type is not only a metaclass but also a class and a function! This versatility is what allows it to serve as the ...

Python doesn’t check types at runtime—at least ... you have to add the attribute _HAS_DYNAMIC_ATTRIBUTES = True to the class or module in question, as opposed to setting some kind of Pytype ...