handler uptime return time in seconds

    def get_tag_uptime(self):

        '''Return uptime output'''

        try:

            p = subprocess.Popen(["uptime"], close_fds=True, shell=False, stdout=subprocess.PIPE)

            return  p.stdout.read().rstrip("\n")

            return int(float(open("/proc/uptime", "r").readline().split()[0]))

        except Exception:

            return ""

    get_tag_uptime.ttl = 3