Class methods and variables

• You can declare variables and methods that are pertaining to the class itself, not to specific instances. In that case, you just don’t use the parameter self.

• To use those, you don’t call the method on the object (like x.method()), but on the class itself (like Dog.average_color).

• Following our last example:

class Dog():
  
  max_age = 20
  
  def average_color(c1, c2):
    return c1 + ' and ' + c2


print(Dog.max_age)
print(Dog.average_color('black','white'))

20
black and white