input: Write a python function to create an instance of the Vehicle class and retrieve its attributes.
  assert create_vehicle("Toyota", "Corolla", 2020).get_make() == "Toyota"
  assert create_vehicle("Toyota", "Corolla", 2020).get_model() == "Corolla"
  assert create_vehicle("Toyota", "Corolla", 2020).get_year() == 2020
output: class Vehicle:
      def __init__(self, make, model, year):
          self.make = make
          self.model = model
          self.year = year
  
      def get_make(self):
          return self.make
  
      def get_model(self):
          return self.model
  
      def get_year(self):
          return self.year
  
  def create_vehicle(make, model, year):
      vehicle = Vehicle(make, model, year)
      return vehicle