new_contents: from django.contrib.auth.models import User
  from copy import deepcopy
  
  
  def _migrate(file_path):
      arq = open(file_path)
      for line in arq.readlines():
          old_email, new_email = line.strip().split(',')
          old_email = old_email.strip()
          new_email = new_email.strip()
          try:
              old_user = User.objects.get(username=old_email)
          except User.DoesNotExist:
              continue
          new_user = User.objects.filter(username=new_email)
          if new_user:
              continue
          new_user = deepcopy(old_user)
          new_user.id = None
          new_user.username = new_email
          new_user.email = new_email
          new_user.save()
          map(new_user.team_set.add, old_user.team_set.all())
      arq.close()
  
  
  def migrate_corp():
      _migrate('/tmp/corp.csv')
  
  
  def migrate_prestadores():
      _migrate('/tmp/prestadores.csv')
  
  
  def migrate_tvglobo():
      _migrate('/tmp/tvglobo.csv')
  
  
  def update_username():
      from django.db.models import Q
      for user in User.objects.all().exclude(
              Q(username='admin') | Q(username='slack_bot')):
          if user.email:
              user.username = user.email
              user.save()
  
subject: Create script to migrate email