new_contents: from distutils.version import LooseVersion
  import glob
  import os
  
  
  def get_version_files(from_version, to_version, directory):
      """
      Get a list of the files named after a version number (eg. 0.1.py, 0.1.2.py,
      etc) from the given directory and return a sorted list of tuples (version,
      file) of files which version number match the from_version (non inclusive)
      and to_version (inclusive) limits.
  
      Arguments:
      from_version -- A string representing the low version number (eg. 1.0)
      to_version -- A string representing the high version number (eg. 1.2.6)
      directory -- The path to the directory that holds the version files
      """
  
      files = []
  
      from_version = LooseVersion(from_version)
      to_version = LooseVersion(to_version)
  
      for file in glob.glob(os.path.join(directory, '*.py')):
          version, _ = os.path.splitext(os.path.basename(file))
          v = LooseVersion(version)
  
          if from_version < v <= to_version:
              files.append((v, file))
  
      files = sorted(files, key=lambda version: version[0])
  
      return files
  
subject: add version module and get_version_files function