In the pattern matching example, the line

>> map(fib, [0, 1, 2, 3, 4, 5, 6, 7, 8, 0])

produces inconsistent output value 34 for the last element (0) in the list. It should be 9 instead. Also, the output of this line would be a map iterator instead of a list in python 3 (if im not mistaken support for python 2 has been dropped?).

So it should be:

>> list(map(fib, [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]))

or

>> list(map(fib, range(10)))