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pyRCV2/pyRCV2/ties.py

79 lines
2.1 KiB
Python

# pyRCV2: Preferential vote counting
# Copyright © 2020 Lee Yingtong Li (RunasSudo)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
__pragma__ = lambda x: None
is_py = False
__pragma__('skip')
is_py = True
__pragma__('noskip')
class TiesPrompt:
"""Prompt the user to break ties"""
def choose_lowest(self, l):
if is_py:
print('Multiple tied candidates:')
for i, x in enumerate(l):
print('{}. {}'.format(i + 1, x[0].name))
while True:
choice = input('Which candidate to select? ')
try:
choice = int(choice)
if choice >= 1 and choice < len(l) + 1:
break
except ValueError:
pass
print()
return l[i - 1]
else:
# UNUSED IN JS - Cannot call window.prompt from Web Worker
# TODO: Work this out
message = ''
for i, x in enumerate(l):
message += (i + 1) + '. ' + x[0].name
message += 'Which candidate to select?'
while True:
choice = window.prompt(message)
try:
choice = int(choice)
if choice >= 1 and choice < len(l) + 1:
break
except ValueError:
pass
return l[i - 1]
def choose_highest(self, l):
return self.choose_lowest(l)
class TiesBackwards:
def choose_lowest(self, l):
raise Exception('Not yet implemented')
def choose_highest(self, l):
raise Exception('Not yet implemented')
class TiesRandom:
def choose_lowest(self, l):
raise Exception('Not yet implemented')
def choose_highest(self, l):
raise Exception('Not yet implemented')