new_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  
  from functools import partial
  
  from django.db import migrations
  
  
  def add_to_season(apps, schema_editor, season_name, jury_names):
      JuryMember = apps.get_model('cpm_data.JuryMember')
      Season = apps.get_model('cpm_data.Season')
      SeasonJuryMember = apps.get_model('cpm_data.SeasonRelatedJuryMember')
  
      season = Season.objects.get(name_en=season_name)
  
      for name in jury_names:
          try:
              jury_member = JuryMember.objects.get(name_en=name)
          except JuryMember.DoesNotExist:
              raise
  
          SeasonJuryMember.objects.get_or_create(season=season,
                                                 jury_member=jury_member)
  
  
  def remove_from_season(apps, schema_editor, season_name, jury_names):
      Season = apps.get_model('cpm_data.Season')
      SeasonJuryMember = apps.get_model('cpm_data.SeasonRelatedJuryMember')
  
      season = Season.objects.get(name_en=season_name)
      season_jury_members = SeasonJuryMember.objects.filter(
          season=season, jury_member__name_en__in=jury_names
      )
  
      season_jury_members.delete()
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('cpm_data', '0014_remove_jury_duplicates'),
      ]
  
      operations = [
          migrations.RunPython(
              partial(add_to_season,
                      season_name=season_name,
                      jury_names=jury_names),
              partial(remove_from_season,
                      season_name=season_name,
                      jury_names=jury_names),
          ) for season_name, jury_names in [
              ('2012', ['Agricola de Cologne', 'Victor Aslyuk', 'Maciej Gil',
                        'Pavel Ivanov', 'Yuri Igrusha', 'Andrew Kureichik',
                        'Sergey Krasikov', 'Bohdana Smirnova', 'Cory McAbee']),
              ('2013', ['Volha Dashuk', 'Irina Demyanova', 'Anton Sidorenko',
                        'Pavel Ivanov', 'Yuri Igrusha', 'Sergey Krasikov',
                        'Bohdana Smirnova', 'Jon Rubin', 'Maciej Gil',
                        'Pierre-Luc Vaillancourt', 'Karsten Weber',
                        'Lee Sang-woo', 'Cory McAbee']),
              ('2014', ['Yuri Igrusha']),  # more added in previous migrations
          ]
      ]
  
subject: Add jury to 2012-2014 - take the data from results pages