#What if our file has multiple columns of data?  Closer to a CSV
FILELOCATION = '/home/isqsdac/Desktop/workspace/l3_1/carlist_vals.txt'


def readcarlist(location):
    carlist = []

    with open(location, 'r') as f:
        for line in f: #iterate over each line in the file.
            carlist.append(line.rstrip().split(','))

    return carlist

def writecarlist(carlist, location):
    with open(location, 'w') as f:
        for c in carlist:
            f.write(c[0] + ',' + c[1])
            f.write('\n')

def outputlist(carlist):
    for c in carlist:
        print(c[0], '-', c[1])

def main():

    carlist = readcarlist(FILELOCATION)
    outputlist(carlist)
    carval = input('Name a car:')

    while carval != "done":
        carmoney = input('What is the value of this car:  ')
        carlist.append([carval, carmoney])
        carval = input('Name a car (or type done to end):  ')

    writecarlist(carlist, FILELOCATION)

main()