old_contents: """empty message
  
  Revision ID: 1d91199c02c5
  Revises:
  Create Date: 2017-05-01 23:02:26.034481
  
  """
  from alembic import op
  import sqlalchemy as sa
  
  
  # revision identifiers, used by Alembic.
  revision = '1d91199c02c5'
  down_revision = None
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.add_column('user', sa.Column('banned', sa.Boolean(), nullable=True))
      # ### end Alembic commands ###
  
  
  def downgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.drop_column('user', 'banned')
      # ### end Alembic commands ###
  
new_contents: """Add user banned column
  
  Revision ID: 1d91199c02c5
  Revises:
  Create Date: 2017-05-01 23:02:26.034481
  
  """
  from alembic import op
  import sqlalchemy as sa
  
  
  # revision identifiers, used by Alembic.
  revision = '1d91199c02c5'
  down_revision = None
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.add_column('user', sa.Column('banned', sa.Boolean(), nullable=True))
      # ### end Alembic commands ###
  
  
  def downgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.drop_column('user', 'banned')
      # ### end Alembic commands ###
  
subject: Add message to user ban migration