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A Guide to Python Lambda Functions (adamj.eu)

submitted 6 months ago by [email protected] to c/[email protected]

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[–] [email protected] 2 points 6 months ago

Actually, now that I think of it, there's no reason you need to join the 2 names into a single str. You could just leave it as a tuple of last, first and Python will know what to do in comparing them.

>>> sorted(student_ids, key = lambda i: ((rec := student_recs[i])['last'], rec['first']))
[632453, 1261456, 532153]

So the lambda would be returning ('Potter', 'Harry') rather than 'Potter, Harry'. But whatever. The := part is still the same.