#How to add to a file

#Makes use of "append"  i.e.  it will add to the file if
#the file exists otherwise it will create hte file

def main():

    carval = input('Name a car:')

    #just ask for a list of cars from the user
    #then append the values to a file.  Note,
    #I do not suggest this unless you are working with
    #very large files, as the file handle is open for a long period of time.
    #better if not too large, to read into a data structure (list)
    #add to the list
    #then flush back to file.
    with open('/home/isqsdac/Desktop/workspace/l3_1/carlist.txt', 'a') as f:
        while carval != "done":
            f.write(carval + '\n')
            carval = input('Name a car (or type done to end):  ')


main()