script.py.mako•1.04 kB
"""${message}
Revision ID: ${up_revision}
Revises: ${down_revision | comma,n}
Create Date: ${create_date}
"""
from typing import Sequence, Union
from alembic import op
import sqlalchemy as sa
${imports if imports else ""}
# revision identifiers, used by Alembic.
revision: str = ${repr(up_revision)}
down_revision: Union[str, None] = ${repr(down_revision)}
branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
def upgrade() -> None:
"""Apply migration changes to database schema.
This function should contain all changes to move forward from the
previous revision to this revision.
"""
${upgrades if upgrades else "pass"}
def downgrade() -> None:
"""Revert migration changes from database schema.
This function should contain all changes to move backward from this
revision to the previous revision. Should mirror upgrade() operations
in reverse order.
"""
${downgrades if downgrades else "pass"}