#!/usr/bin/python

def appendCol(fName, colName, values):
    with open(fName) as fn:
        lines = fn.read().splitlines()
    with open(fName, "w") as fnw:
        print(lines[0] + ", " + colName, file=fnw)
        for x in range(1, len(lines)):
            if x <= len(values):
                print(lines[x] + ", " + str(values[x-1]), file=fnw)
            else:
                print(lines[x], file=fnw)

appendCol("Q4.txt","Grade",[20, 60, 75, 15])