text: """empty message
  
  Revision ID: 2f71ea69cbc3
  Revises: 5fb508a7d618
  Create Date: 2019-12-06 15:15:18.182974
  
  """
  from alembic import op
  import sqlalchemy as sa
  
  
  # revision identifiers, used by Alembic.
  revision = '2f71ea69cbc3'
  down_revision = '5fb508a7d618'
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.add_column('block', sa.Column('urlfor1', sa.String(length=255), nullable=False))
      # ### end Alembic commands ###
  
  
  def downgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.drop_column('block', 'urlfor1')
      # ### end Alembic commands ###
  