class whalrus.ConverterBallotToStrictOrder(priority: whalrus.priorities.priority.Priority = Priority.UNAMBIGUOUS)[source]

Default converter to a strictly ordered ballot.

This is a default converter to a strictly ordered ballot (cf. BallotOrder.is_strict). It tries to infer the type of input and converts it to a BallotOrder (possibly a ballot of a subclass, such as BallotLevels), ensuring that the represented order is strict.

Parameters:priority (Priority) – The Priority used to break ties. Default: Priority.UNAMBIGUOUS.


>>> converter = ConverterBallotToStrictOrder(priority=Priority.ASCENDING)
>>> converter('a > b ~ c')
BallotOrder(['a', 'b', 'c'], candidates={'a', 'b', 'c'})
>>> converter(['a', {'b', 'c'}])
BallotOrder(['a', 'b', 'c'], candidates={'a', 'b', 'c'})
>>> converter({'a': 10, 'b': 7, 'c': 0})
BallotLevels({'a': 10, 'b': 7, 'c': 0}, candidates={'a', 'b', 'c'}, scale=Scale())
>>> converter(BallotOneName('a', candidates={'a', 'b', 'c'}))
BallotOrder(['a', 'b', 'c'], candidates={'a', 'b', 'c'})
>>> converter(BallotPlurality('a', candidates={'a', 'b', 'c'}))
BallotOrder(['a', 'b', 'c'], candidates={'a', 'b', 'c'})
>>> converter(BallotVeto('a', candidates={'a', 'b', 'c'}))
BallotOrder(['b', 'c', 'a'], candidates={'a', 'b', 'c'})