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1) Students:



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2) Clearly state your claim for which is the correct hypothesis
   regarding the expression, item in data.

   (we include both here; you should delete the wrong one and leave
   only the hypothesis you believe is correct)

   Hypothesis (A): 
   The expression is True if and only if the actual object identified
   as item is contained within the list.

   Hypothesis (B):
   The expression is True if and only if there exists an element in
   the list that is equivalent to the identified item.


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3) Provide evidence for your hypothesis by copying/pasting the Python
   code you used to perform experiments and any relevant output that
   was produced as a result.





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4) Explain how the evidence supports your claim, and in particular,
   how the observed results would have been different had the other
   hypothesis had been true.



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5) Extra Credit

The developers of Python surely could have chosen either of the two
semantics for this behavior. Suggest why the actual semantics chosen
by the developers of Python is the most useful.


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