input: Write a python function to calculate the distance between two points.
  assert calculate_distance(Point(0, 0), Point(3, 4)) == 5.0
  assert calculate_distance(Point(1, 1), Point(4, 5)) == 5.0
  assert calculate_distance(Point(2, 3), Point(6, 7)) == 5.656854249492381
output: import math
  from collections import namedtuple
  
  Point = namedtuple('Point', ['x', 'y'])
  
  def calculate_distance(p1, p2):
      return math.sqrt((p2.x - p1.x) ** 2 + (p2.y - p1.y) ** 2)