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Laurens Sandt3,513 Points
reduce and lambda doesn't pass challenge, but does result in the longest string in PyCharm
longest = reduce(lambda a, b: a if len(a) > len(b) else b, [x for x in strings])
doesn't pass in the challenge
running this in PyCharm print(longest) results in My grandmother started walking five miles a day when she was sixty. She's ninety-seven know and we don't know where she is. which is the longest sentence such a bummer
One of the beauties of functional programming is list comprehension is something that is rarely needed.
the comprehension is already iterating over
strings so there isn't a need for a list comprehension here.
Also the output it is expecting is a string, not an integer.
longest = reduce(lambda x,y: x if len(x) > len(y) else y, strings)