It seems SchulzePR is misbehaving, at least with the ballot input I have "engineered":
Python 2.7.4 (default, Apr 19 2013, 18:28:01)
[GCC 4.7.3] on linux2
>>> from pyvotecore.schulze_pr import SchulzePR
>>> b=[{'count': 1, 'ballot': [[1, 2, 3, 4], [0]]},
{'count': 1, 'ballot': [[3], [0, 1, 2, 4]]},
{'count': 1, 'ballot': [[0], [1, 2, 3, 4]]}]
>>> SchulzePR(b, ballot_notation="grouping").as_dict()
{'tie_breaker': [4, 0, 3, 1, 2],
'candidates': set([0, 1, 2, 3, 4]),
'order': [3, 0, 4, 1, 2],
'rounds': [{'winner': 3},
{'winner': 0},
{'winner': 4},
{'winner': 1, 'tied_winners': set([1, 2])},
{'winner': 2}]}The anomaly, as I see it, lies in the fact that in the ballot the candidates 1, 2 and 4 are always in the same group, so essentially they must be also grouped together in the results. But in the output you can see that for some reason candidate 4 is above candidates 1 and 2 that are tied.
Am I missing something?
It seems SchulzePR is misbehaving, at least with the ballot input I have "engineered":
The anomaly, as I see it, lies in the fact that in the ballot the candidates 1, 2 and 4 are always in the same group, so essentially they must be also grouped together in the results. But in the output you can see that for some reason candidate 4 is above candidates 1 and 2 that are tied.
Am I missing something?