code: def _shorten_version(ver, num_components=2):
          
          parts = ver.split('.')
          if len(parts) <= num_components:
              return ver
          return '.'.join(parts[:num_components])
docs: If ``ver`` is a dot-separated string with at least (num_components +1)
          components, return only the first two. Else return the original string.
  
          :param ver: version string
          :type ver: str
          :return: shortened (major, minor) version
          :rtype: str