from math import sqrt

class Punkt2D(object):
  def __init__(self, x , y):
    self.x = x
    self.y = y

  def odl(self, other):
    return sqrt(((other.x - self.x)*(other.x - self.x)+(other.y - self.y)*(other.y - self.y)))

class Punkt3D(Punkt2D):
  def __init__(self, x, y, z):
    super().__init__(x, y)
    self.z = z

  def odl(self, other):
    return sqrt(((other.x-self.x)*(other.x-self.x)+(other.y-self.y)*(other.y-self.y)+(other.z-self.z)*(other.z-self.z)))


ob1 = Punkt2D(1, 1)

ob2 = Punkt2D(2, 2)

ob3 = Punkt3D(1, 1, 1)

ob4 = Punkt3D(3, 3, 3)

print(ob1.odl(ob2))

print(ob3.odl(ob4))