Functions are an object in Python too, I think that's why they're trying to get at. So you can do some funky things with them if you really want.

You certainly don't have to write OO Python if you don't want to. Objecting to functions being objects like the person you're replying to is, is a flavour of puritanism I find baffling.

They definitely are,

       Python 3.15.0 (tags/v3.15.0:d220409, Oct  9 2026, 11:55:56) [MSC v.1951 64 bit (AMD64)] on win32
       Enter "help" below or click "Help" above for more information.
       >>> def sum(x,y):
              return x + y

       >>> sum(40, 2)
       42

       >>> type(sum)
       <class 'function'>

       >>> dir(sum)
       ['__annotate__', '__annotations__', '__builtins__', '__call__', '__class__', '__closure__', '__code__', '__defaults__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__get__', '__getattribute__', '__getstate__', '__globals__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__kwdefaults__', '__le__', '__lt__', '__module__', '__name__', '__ne__', '__new__', '__qualname__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__type_params__']