31. New vs old classes

When declaring a class, always inherit from object as there are additional, optimized properties and behaviors that your class will inherit (e.g. __slots__).

31.1. Don’t do this

class Car():
    def __init_(self, make, model):
        self.make = make
        self.model = model

31.2. Do this

class Car(object):
    def __init_(self, make, model):
        self.make = make
        self.model = model