/usr/lib/python2.7/dist-packages/schooltool/intervention/generations/evolve3.py is in python-schooltool.intervention 2.7.1-0ubuntu1.
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# SchoolTool - common information systems platform for school administration
# Copyright (c) 2009 Shuttleworth Foundation
#
# 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 2 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/>.
#
"""
Upgrade scholtool.intervention to generation 3.
Evolution script to get rid of intervention students for which there is no
student.
"""
from zope.app.generations.utility import findObjectsProviding
from zope.app.generations.utility import getRootFolder
from zope.component.hooks import getSite, setSite
from schooltool.app.interfaces import ISchoolToolApplication
def evolve(context):
root = getRootFolder(context)
old_site = getSite()
apps = findObjectsProviding(root, ISchoolToolApplication)
for app in apps:
setSite(app)
interventionRoot = app.get(u'schooltool.interventions', {})
for schoolYear in interventionRoot.values():
for student in list(schoolYear):
if student not in app[u'persons']:
del schoolYear[student]
setSite(old_site)
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