code: def _msToString(self, ms):
          
          hr, ms = divmod(ms, 3600000)
          mins, ms = divmod(ms, 60000)
          secs, mill = divmod(ms, 1000)
          return "%ihr %imin %isecs %ims" % (hr, mins, secs, mill)
docs: Change milliseconds to hours min sec ms format.