new_contents: """empty message
  
  Revision ID: 2f0711d5e7f
  Revises: 3c3d260027e
  Create Date: 2015-04-26 22:08:47.138701
  
  """
  
  # revision identifiers, used by Alembic.
  revision = '2f0711d5e7f'
  down_revision = '3c3d260027e'
  
  from alembic import op
  import sqlalchemy as sa
  
  
  def upgrade():
      ### commands auto generated by Alembic - please adjust! ###
      op.create_foreign_key(None, 'response', 'art', ['art_id'], ['id'])
      ### end Alembic commands ###
  
  
  def downgrade():
      ### commands auto generated by Alembic - please adjust! ###
      op.drop_constraint(None, 'response', type_='foreignkey')
      ### end Alembic commands ###
  
subject: add migration