Raspberry Pi - Python code for reading temperature data from a connected sensor on the w1 bus. The temperature data is printed out on a connected Adafruit 16x2 LCD plate.

temp2lcd.py

from Adafruit_CharLCDPlate import Adafruit_CharLCDPlate
from time import sleep

def read_temp():
    """
    Read temperature from w1 bus.
    """
    with open("/sys/bus/w1/devices/28-000004ac7761/w1_slave") as f:
        text = f.read()
    secondline = text.split("\n")[1]
    temperaturedata = secondline.split(" ")[9]
    temperature = float(temperaturedata[2:]) / 1000
    return temperature

#Init the Adafruit LCD Plate
lcd = Adafruit_CharLCDPlate()
lcd.numlines=2
lcd.clear()
msg = "Temperatur:"
lcd.message(msg)

while True:
    lcd.setCursor(0, 1)
    lcd.message("%.2f C" % read_temp())
    sleep(1)