python-vote-full 1.0

Description:

pythonvotefull 1.0

python-vote-core implements various electoral methods, providing the results
calculated off a provided set of ballots and options.

Project page: http://github.com/bradbeattie/python-vote-core
Issue tracker: http://github.com/bradbeattie/python-vote-core/issues
Example usage: http://modernballots.com


Methods implemented

Single Winner Methods

Plurality (aka first-past-the-post or fptp)
Instant-Runoff Voting (aka IRV)
Schulze Method (aka Beatpath)


Multiple Winner Methods

Plurality at large (aka block voting)
Single Transferable Vote (aka STV)
Schulze STV


Ordering Methods

Schulze Proportional Representation
Schulze Nonproportional Representation





Basic Usage
Schulze method example:
>>> from pyvotecore.schulze_method import SchulzeMethod
>>> ballots = [
... { "count":3, "ballot":[["A"], ["C"], ["D"], ["B"]] },
... { "count":9, "ballot":[["B"], ["A"], ["C"], ["D"]] },
... { "count":8, "ballot":[["C"], ["D"], ["A"], ["B"]] },
... { "count":5, "ballot":[["D"], ["A"], ["B"], ["C"]] },
... { "count":5, "ballot":[["D"], ["B"], ["C"], ["A"]] }
... ]
>>> SchulzeMethod(ballots, ballot_notation = "grouping").as_dict()
{'actions': [{'edges': {('A', 'B')}},
{'edges': {('A', 'C')}},
{'nodes': {'A'}},
{'edges': {('B', 'C')}},
{'nodes': {'B', 'D'}}],
'candidates': {'A', 'B', 'C', 'D'},
'pairs': {('A', 'B'): 16,
('A', 'C'): 17,
('A', 'D'): 12,
('B', 'A'): 14,
('B', 'C'): 19,
('B', 'D'): 9,
('C', 'A'): 13,
('C', 'B'): 11,
('C', 'D'): 20,
('D', 'A'): 18,
('D', 'B'): 21,
('D', 'C'): 10},
'strong_pairs': {('A', 'B'): 16,
('A', 'C'): 17,
('B', 'C'): 19,
('C', 'D'): 20,
('D', 'A'): 18,
('D', 'B'): 21},
'winner': 'C'}
20110509.1
—

Fixing PyPi release

20110509.0
—

Initial PyPi release



License
Copyright (C) 2009, Brad Beattie
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see http://www.gnu.org/licenses.