text: """empty message
  
  Revision ID: b3a8ed604978
  Revises: 5335af8f4e79
  Create Date: 2018-09-25 08:44:00.959204
  
  """
  from alembic import op
  import sqlalchemy as sa
  from sqlalchemy.dialects import mysql
  
  # revision identifiers, used by Alembic.
  revision = 'b3a8ed604978'
  down_revision = '5335af8f4e79'
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.add_column('user', sa.Column('_password', sa.String(length=50), nullable=False))
      op.drop_column('user', 'password')
      # ### end Alembic commands ###
  
  
  def downgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.add_column('user', sa.Column('password', mysql.VARCHAR(length=50), nullable=False))
      op.drop_column('user', '_password')
      # ### end Alembic commands ###
  