Exercise 2.8 from http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-189-a-gentle-introduction-to-programming-using-python-january-iap-2011/assignments/MIT6_189IAP11_hw2.pdf

gpa.py

# **********  Exercise 2.8 **********

import math

def report_card():
    ##### YOUR CODE HERE #####
    count_classes = int(input("How many classes did you take? "))
    grade_book = {}
    total = 0
    for i in range(count_classes):
        name = input("What was the name of this class? ")
        grade = input("What was your grade? ")
        grade_book[name] = grade
        total += grade
    # print total
    print "REPORT CARD:"
    for course in grade_book:
        print course, "-", grade_book[course]
    print "Overall GPA ", round(float(total)/count_classes,2)
    
# report_card()

# Test Cases
## In comments, show the output of one run of your function.
##How many classes did you take? 3.01
##What was the name of this class? 18.01
##What was your grade? 97
##What was the name of this class? 18.02
##What was your grade? 97
##What was the name of this class? 18.03
##What was your grade? 98
##REPORT CARD:
##18.01 - 97
##18.02 - 97
##18.03 - 98
##Overall GPA  97.33