text: # -*- coding: utf-8 -*-
  ###########################################################################
  # Copyright (c), The AiiDA team. All rights reserved.                     #
  # This file is part of the AiiDA code.                                    #
  #                                                                         #
  # The code is hosted on GitHub at https://github.com/aiidateam/aiida_core #
  # For further information on the license, see the LICENSE.txt file        #
  # For further information please visit http://www.aiida.net               #
  ###########################################################################
  """Drop various columns from the `DbUser` model.
  
  These columns were part of the default Django user model
  
  Revision ID: de2eaf6978b4
  Revises: 1830c8430131
  Create Date: 2019-05-28 11:15:33.242602
  
  """
  # pylint: disable=invalid-name,no-member,import-error,no-name-in-module
  from __future__ import division
  from __future__ import print_function
  from __future__ import absolute_import
  
  from alembic import op
  import sqlalchemy as sa
  from sqlalchemy.dialects import postgresql
  
  # revision identifiers, used by Alembic.
  revision = 'de2eaf6978b4'
  down_revision = '1830c8430131'
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      """Migrations for the upgrade."""
      op.drop_column('db_dbuser', 'is_active')
      op.drop_column('db_dbuser', 'is_superuser')
      op.drop_column('db_dbuser', 'is_staff')
      op.drop_column('db_dbuser', 'last_login')
      op.drop_column('db_dbuser', 'password')
      op.drop_column('db_dbuser', 'date_joined')
  
  
  def downgrade():
      """Migrations for the downgrade."""
      op.add_column('db_dbuser',
                    sa.Column('date_joined', postgresql.TIMESTAMP(timezone=True), autoincrement=False, nullable=True))
      op.add_column('db_dbuser', sa.Column('password', sa.VARCHAR(length=128), autoincrement=False, nullable=True))
      op.add_column('db_dbuser',
                    sa.Column('last_login', postgresql.TIMESTAMP(timezone=True), autoincrement=False, nullable=True))
      op.add_column('db_dbuser', sa.Column('is_staff', sa.BOOLEAN(), autoincrement=False, nullable=True))
      op.add_column('db_dbuser', sa.Column('is_superuser', sa.BOOLEAN(), autoincrement=False, nullable=True))
      op.add_column('db_dbuser', sa.Column('is_active', sa.BOOLEAN(), autoincrement=False, nullable=True))
  