what is the use of class in python

#Source: https://vegibit.com/python-class-examples/
class Vehicle:
    def __init__(self, brand, model, type):
        self.brand = brand
        self.model = model
        self.type = type
        self.gas_tank_size = 14
        self.fuel_level = 0

    def fuel_up(self):
        self.fuel_level = self.gas_tank_size
        print('Gas tank is now full.')

    def drive(self):
        print(f'The {self.model} is now driving.')

obj = Vehicle("Toyota", "Carola", "Car")
obj.drive()

class MyClass:
    """A simple example class"""
    i = 12345

    def f(self):
        return 'hello world'