Circular Buffer

[Russel Winder]

On Thu, 2014-02-13 at 18:03 +0000, bearophile wrote:
[…]
> Take also a look at itertools.cycle.

How about this:


        #! /usr/bin/env py.test-3.3
        
        from itertools import cycle, islice
        
        data = [1, 2, 3]
        
        def test_forward():
            assert tuple(islice(cycle(data), 5)) == (1,2,3,1,2)
        
        def test_reverse():
            assert tuple(islice(cycle(reversed(data)), 5)) ==
        (3,2,1,3,2)
        


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