database/migration/env.py
def run_migrations_offline():
    """Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.

    """
    engine = db_manager.get_session('default').get_bind()
    context.configure(url=engine.url, target_metadata=target_metadata)

    with context.begin_transaction():
        context.run_migrations()
Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.

    
Run migrations in 'offline' mode.
This configures the context with just a URL
and not an Engine, though an Engine is acceptable
here as well.  By skipping the Engine creation
we don't even need a DBAPI to be available.

Calls to context.execute() here emit the given string to the
script output.
Run migrations in ' offline ' mode . This configures the context with just a URL and not an Engine though an Engine is acceptable here as well . By skipping the Engine creation we don ' t even need a DBAPI to be available . Calls to context . execute () here emit the given string to the script output .
def run_migrations_offline():
    engine = db_manager.get_session('default').get_bind()
    context.configure(url=engine.url, target_metadata=target_metadata)
    with context.begin_transaction():
        context.run_migrations()
def run_migrations_offline ( ) : engine = db_manager . get_session ( 'default' ) . get_bind ( ) context . configure ( url = engine . url , target_metadata = target_metadata ) with context . begin_transaction ( ) : context . run_migrations ( )
Run migrations in 'offline' mode.
Run migrations in ' offline ' mode .
"""Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.

    """