new_contents: from __future__ import print_function, absolute_import, division
  
  import numpy as np
  
  
  def parabola_gen(x, center, height, width):
      return width * (x-center)**2 + height
  
  
  def gauss_gen(x, center, height, width):
      return height * np.exp(-((x-center) / width)**2)
subject: Add utils.py for copy/paste code