# Copyright (c) 2012 Matthew Kirk
# Licensed under MIT License, see 
# http://www.cl.cam.ac.uk/freshers/raspberrypi/tutorials/temperature/LICENSE

tfile = open("/sys/bus/w1/devices/10-000802824e58/w1_slave")
text = tfile.read()
tfile.close()
temperature_data = text.split()[-1]
temperature = float(temperature_data[2:])
temperature = temperature / 1000
print temperature