3.3 Trees

Submit your answers with python ok -q q3 -u.

Note: Read over the Tree class in lab07.py. Make sure you understand the doctests.

>>> t = Tree(1, Tree(2))
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>>> t = Tree(1, [Tree(2)])
>>> t.label
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>>> t.branches[0]
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>>> t.branches[0].label
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>>> t.label = t.branches[0].label
>>> t
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>>> t.branches.append(Tree(4, [Tree(8)]))
>>> len(t.branches)
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>>> t.branches[0]
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>>> t.branches[1]
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