code: def _parse_uptime_string(self, uptime):
          
          uptime = uptime.strip()
          load_averages = uptime[uptime.find('load average:') :].split(':')[1].strip().split(',')
          load_averages = [float(load_avg) for load_avg in load_averages]
          return load_averages
docs: Parse u' 16:53:48 up 1 day, 21:34,  3 users,  load average: 0.04, 0.14, 0.19\n'