Heh? i2c?

#!/usr/bin/python3

# from docs.beagleboard.org and the BeagleBone-Cookbook

import time
import smbus

ms = 1000
bus = smbus.SMBus(1)
addr = 0x28

while True:
    data = bus.read_byte_data(addr, 0)
    print("Gas per ______ " + str(data))
    time.sleep(ms/1000)