class Example:
    def __init__(self, a, b):
        self.data = [a, b]
    def __iter__(self):
        return iter(reversed(self.data))
    def __tuple__(self):
        return map(str, self.data)
ex = Example(2, 3)
print([x for x in ex])  # Should return the data from __iter__().
>>> [3, 2]  # Reversed, good...
print(tuple(ex))  # Now calling: __tuple__().
>>> (3, 2)  # Should have returned ["2", "3"].

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