old_contents: 
  """
  Interpolation algorithms using cubic Hermite polynomials.
  """
  
  from __future__ import division, print_function, absolute_import
  
  import numpy as np
  from scipy.interpolate import KroghInterpolator
  
  def interpolate(x0, x1, m0, m1, t0, t1):
      x = np.repeat([t0, t1], 2)
      y = np.ravel(np.dstack(([x0, x1], [m0, m1])))
      return KroghInterpolator(x, y)
  
new_contents: 
  """
  Interpolation algorithms using cubic Hermite polynomials.
  """
  
  from __future__ import division, print_function, absolute_import
  
  import numpy as np
  from scipy.interpolate import KroghInterpolator
  
  
  def interpolate(x0, x1, m0, m1, t0, t1):
      x = np.repeat([t0, t1], 2)
      y = np.ravel(np.dstack(([x0, x1], [m0, m1])))
      return KroghInterpolator(x, y)
  
subject: Update interpolate.py