#class Car:
 #   wheels_number = 4

  #  def __init__(self, name, color, year, is_crashed):
   #     self.name = name
    #    self.color = color
     #   self.year = year
      #  self.is_crashed = is_crashed
    #def drive(self, city):
     #   print(self.name + ' is driving to ' + city)

    #def change_color(self, new_color):
     #   self.color = new_color

#opel_car = Car('Opel Tigra', 'grey', '1999', True)
#opel_car.drive('London')
#mazda_car = Car('Mazda CX7', 'black', '2014', False)
#mazda_car.drive('Paris')
#mazda_car.change_color('yellow')
#print(mazda_car.color)

#print(opel_car.drive)
#print(opel_car.wheels_number)
#print(opel_car.name)
#print(opel_car.color)
#print(opel_car.year)
#print(opel_car.is_crashed)

class Circle:
    pi = 3.14

    def __init__(self, radius=1):
        self.radius = radius
        self.circumference = 2 * Circle.pi * self.radius


    def get_area(self):
        return self.pi * (self.radius ** 2)

    #def get_circumference(self):
     #   return 2 * self.pi * self.radius
circle_1 = Circle(5)
print(circle_1.get_area())
print(circle_1.circumference)
#print(circle_1.get_area())
#circle_2 = Circle(3)
#print(circle_2.get_area())
#print(circle_2.get_circumference())
#circle_3 = Circle(5)
#circle_area = circle_3.get_area()
#print(circle_area)
#print(circle_3.get_circumference())