Assume that the variable grades is a list of the letters A, B, C, D, and F. For

Question

Assume that the variable grades is a list of the letters A, B, C, D, and F. For example,

grades = ['A', 'F', 'C', 'F', 'A', 'B', 'A']

Write a Python expression that creates a list named, in which the elements are the number of times each of the letters A, B, C, D, and F appear in grades. For example, for the above value of grades, the following would be correct output.

frequency = [3, 1, 1, 0, 2]

Your expression must give the correct values for any list of grades, not just the one in this example. Hint: use the list method.

Explanation / Answer

>>> class test():

    def handy(self):

        a = raw_input('How many hands? ')

        d = { "hand" + str(i + 1) : self.do_something(i) for i in range(int(a)) }

        keys = d.keys()

        keys.sort()

        for x in keys:

            print x, '=', d[x]

    def do_something(self, i):

        return "something " + str(i)

>>> test().handy()

How many hands? 4

hand1 = something 0

hand2 = something 1

hand3 = something 2

hand4 = something 3

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