class Car:
    def __init__(self, color):
        self.color = color
        self.other = Other()
        self.other.i_like_color_of_this_car(self)

class Other:
    def i_like_color_of_this_car(self, car):
        self.chosen_color = car.color

    def show_chosen_color(self):
        print(self.chosen_color)

red_car = Car("Red")
red_car.other.show_chosen_color(red_car)