new_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  from django.db import migrations
  
  
  def forwards_func(apps, schema_editor):
      '''
      I accidentially deleted a citation in production.
      This migration adds it again.
      '''
      # Models to work with:
      CognateJudgementCitation = apps.get_model(
          'lexicon', 'CognateJudgementCitation')
      MeaningList = apps.get_model('lexicon', 'MeaningList')
      LanguageList = apps.get_model('lexicon', 'LanguageList')
      Lexeme = apps.get_model('lexicon', 'Lexeme')
      # Interesting data:
      lList = LanguageList.objects.get(name='Current')
      mList = MeaningList.objects.get(name='Jena200')
      languageIds = lList.languages.values_list('id', flat=True)
      meaningIds = mList.meanings.values_list('id', flat=True)
      lexemeIds = Lexeme.objects.filter(
          language_id__in=languageIds,
          meaning_id__in=meaningIds).values_list('id', flat=True)
      # Entries to modify:
      cjcs = CognateJudgementCitation.objects.filter(
          cognate_judgement__lexeme_id__in=lexemeIds)
      # Setting reliability to high:
      cjcs.update(reliability='A')
  
  
  def reverse_func(apps, schema_editor):
      pass
  
  
  class Migration(migrations.Migration):
  
      dependencies = [('lexicon', '0091_bhojpuri')]
  
      operations = [
          migrations.RunPython(forwards_func, reverse_func),
      ]
  
subject: Set CognateJudgementCitation reliabilities to high