new_contents: import math
  import random
  
  def circle(out, centre, radius, resolution = 1000):
      for i in range(0, resolution):
          angle = i / resolution * 2 * math.pi
          y = math.sin(angle) * radius + centre[0]
          x = math.cos(angle) * radius + centre[1]
          out.write("{} {}\n".format(x, y))
  
  def main():
      radius_range = (5,10)
      x_range = (-1000, 1000)
      y_range = (-1000, 1000)
      count = 1000
      resolution = 1000
  
      out = open('circles.txt', 'w')
  
      for i in range(0, count):
          x = random.uniform(x_range[0], x_range[1])
          y = random.uniform(y_range[0], y_range[1])
          r = random.uniform(radius_range[0], radius_range[1])
          circle(out, (x,y), r, resolution)
  
  main()
  
subject: Introduce test data generator