text: """empty message
  
  Revision ID: 59a8d290f4d0
  Revises: 74f2bccb1af4
  Create Date: 2018-06-05 12:35:24.701733
  
  """
  from alembic import op
  import sqlalchemy as sa
  
  
  # revision identifiers, used by Alembic.
  revision = '59a8d290f4d0'
  down_revision = '74f2bccb1af4'
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.add_column('category', sa.Column('brief_description', sa.String(), nullable=True))
      op.add_column('category', sa.Column('color', sa.String(), nullable=True))
      op.add_column('category', sa.Column('image', sa.String(), nullable=True))
      # ### end Alembic commands ###
  
  
  def downgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.drop_column('category', 'image')
      op.drop_column('category', 'color')
      op.drop_column('category', 'brief_description')
      # ### end Alembic commands ###
  