BeagleBone - Read an analog signal from pin: 37Header: P9

#Script By Shane B.
#Website: PIPBOY3000.com -- Contribute to the OpenSource PipBoy 3000 project
#MIT LICENSE
#Power Supply of 1.8v is on Header: P9 and PIN Number: 32
#Hook the negative to Ground pins 1(or 2) on Header: P9
#Hook signal to PIN Number: 37 on Header: P9

#RESOURCE TUTORIAL: http://www.gigamegablog.com/2012/01/22/beaglebone-coding-101-using-the-serial-and-analog-pins/

#Import libraries#
##################
#No Libaries yet


#Define Functions#
##################
def average(seq, total=0.0):
    num = 0
    for item in seq:
        total += item
        num += 1
    return total / num



#Define variables#
##################
avg = 0
inputData = []
sendOutputcounter = 0


#Begin Script
#########################################################################
while(True):
        #Analog 2
        inputData.append(int(open("/sys/devices/platform/tsc/ain2","rb").read()))

        #Once inputData reaches the length of 100 -- delete the most out of date input value
        if len(inputData) >= 20:
                inputData.pop(0);

        avg = average(inputData)
        avg = avg/1000
        avg = avg*10
    avg = round(avg)

    #Slow down read out
    sendOutputcounter = sendOutputcounter + 1
    if sendOutputcounter > 100:
        sendOutputcounter = 0
        print avg