what would python display on the following >>> from lab07 import * >>> link = Link(1000) >>> link.first 

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>>> link.rest is Link.empty

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>>> link = Link(1000, 2000)

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>>> link = Link(1000, Link())

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>>> from lab07 import * >>> link = Link(1, Link(2, Link(3))) >>> link.first 

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>>> link.rest.first

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>>> link.rest.rest.rest is Link.empty

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>>> link.first = 9001 >>> link.first

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>>> link.rest = link.rest.rest >>> link.rest.first

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>>> link = Link(1) >>> link.rest = link >>> link.rest.rest.rest.rest.first

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>>> link = Link(2, Link(3, Link(4))) >>> link2 = Link(1, link) >>> link2.first

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>>> link2.rest.first

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>>> from lab07 import * >>> link = Link(5, Link(6, Link(7))) >>> link.second 

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>>> link.rest.second

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>>> link.second = 10 >>> link # Look at the __repr__ method of Link

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>>> link.second = Link(8, Link(9)) >>> link.second.first

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>>> print(link) # Look at the __str__ method of Link