text: """user Migration
  
  Revision ID: 4983ad6ee1c4
  Revises: 
  Create Date: 2021-04-29 21:19:08.537738
  
  """
  from alembic import op
  import sqlalchemy as sa
  
  
  # revision identifiers, used by Alembic.
  revision = '4983ad6ee1c4'
  down_revision = None
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.create_table('users',
      sa.Column('id', sa.Integer(), nullable=False),
      sa.Column('username', sa.String(length=255), nullable=True),
      sa.Column('email', sa.String(length=255), nullable=True),
      sa.Column('password_hash', sa.String(length=255), nullable=True),
      sa.PrimaryKeyConstraint('id')
      )
      op.create_index(op.f('ix_users_email'), 'users', ['email'], unique=True)
      op.create_index(op.f('ix_users_username'), 'users', ['username'], unique=False)
      # ### end Alembic commands ###
  
  
  def downgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.drop_index(op.f('ix_users_username'), table_name='users')
      op.drop_index(op.f('ix_users_email'), table_name='users')
      op.drop_table('users')
      # ### end Alembic commands ###
  