old_contents: #
  # lib.py: utility functions for the Motebopok handlers
  #
  """This file takes the difficulties out of working with directories,
  and it also reduces clutter in at least one program."""
  
  import os
  
  def newer(file1, file2):
      file1_creation = os.stat(file1).st_mtime
      file2_creation = os.stat(file2).st_mtime
      return file1_creation > file2_creation
  
  def nullstrip(file):
      for line in file:
          if line.rstrip() and line[0] != "#":
              yield line
  
  
new_contents: #
  # lib.py: utility functions for the Motebopok handlers
  #
  """This file takes the difficulties out of working with directories,
  and it also reduces clutter in at least one program."""
  
  import os
  
  def newer(file1, file2):
      file1_modification = os.stat(file1).st_mtime
      file2_modification = os.stat(file2).st_mtime
      return file1_modification > file2_modification
  
  def nullstrip(file):
      for line in file:
          if line.rstrip() and line[0] != "#":
              yield line
  
  
subject: Use modification, not creation times to determine relative newness.