Python - class example - (FB: learnpython.org)

# define class
class Calc:

    def __init__(self, a, b):
        self.x = a
        self.y = b

    def add(self):
        return self.x + self.y

    def sub(self):
        return self.x - self.y

    def mul(self):
        return self.x * self.y

    def div(self):
        return self.x / self.y

# create instance
my_calc = Calc(6, 3)

# use methods of instance
print(my_calc.add()) # 9
print(my_calc.sub()) # 3
print(my_calc.mul()) # 18
print(my_calc.div()) # 2