def make_list_uppercase(original_list):
    '''Return a list of strings that contains the words from
       list original_list but in all uppercase letters.'''

    uppercase_list = []
    for s in original_list:
        uppercase_list.append(s.upper())
    return uppercase_list        

def square_list(int_list):
    '''Return a list that contains the ints from list int_list
       squared'''

    squared_list = []
    for i in int_list:
        squared_list.append(i**2)
    return squared_list        


if __name__ == "__main__":
    instructors = ["Jen","David","Rover","Paul"]
    for s in instructors:
        print len(s)

    ans = make_list_uppercase(["Hello", "My Friendly", "Kitten"])
    # make sure you understand the following line!
    print ans, "sb ['HELLO', 'MY FRIENDLY', 'KITTEN']"
    ans = make_list_uppercase([])
    print ans, "sb []"

    ans = square_list([0,1,2,3,4])
    print ans, "sb [0, 1, 4, 9, 16]"