#!/usr/bin/python
with open("/sys/class/power_supply/mains/online") as fp:
ac = fp.read(1)
ac = {'0':'off','1':'on'}[ac]
with open("/sys/class/power_supply/battery/charge_now") as fp:
now = int(fp.read())
with open("/sys/class/power_supply/battery/charge_full") as fp:
full = int(fp.read())
battery = now * 100 / full
print "battery=%d\nac_line=%s\n"%(battery,ac)
