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Jul 29, 2015 at 20:55 history edited 200_success CC BY-SA 3.0
Took @mescalinum's suggestion to be more cautious
Jul 29, 2015 at 20:53 comment added fferri Also note that for any string s, s.startswith('') is always true, so you treat also the empty answer as yes.
Jul 29, 2015 at 20:52 comment added fferri If you allow any string for yes and no, you should reject an answer which is a prefix of the longest common prefix among yes and no (and any other valid answer). Example, if yes='fantastic' and no='false', the longest common prefix is 'fa', and any answer prefix of this (namely 'f' and 'fa') is ambiguous, but your code will treat it as a yes answer.
Jul 29, 2015 at 17:56 history answered 200_success CC BY-SA 3.0