"""Fix template password field. Revision ID: 4bd95c99b2e7 Revises: 3002bac0c25a Create Date: 2017-05-24 10:56:41.256602 """ from alembic import op from mailman.database.types import SAUnicode # revision identifiers, used by Alembic. revision = '4bd95c99b2e7' down_revision = '3002bac0c25a' def upgrade(): with op.batch_alter_table('template') as batch_op: batch_op.alter_column('password', type_=SAUnicode) def downgrade(): # Don't go back to DateTime, it will fail if a password was set. pass