input: Write a python function to calculate the distance between two points.
  assert math.isclose(route_distance((0, 0), (3, 4)), 5.0, rel_tol=1e-9)
  assert math.isclose(route_distance((1, 2), (4, 6)), 5.0, rel_tol=1e-9)
  assert math.isclose(route_distance((-1, -1), (-4, -5)), 5.0, rel_tol=1e-9)
output: import math
  
  def route_distance(point1, point2):
      return math.sqrt((point2[0] - point1[0])**2 + (point2[1] - point1[1])**2)