Method with_ddl_events

lib/sqlalchemy/sql/ddl.py:900–910

helper context manager that will apply appropriate DDL events to a CREATE or DROP operation.

(self, target, **kw)

class InvokeDropDDLBase(InvokeDDLBase):
    @contextlib.contextmanager
    def with_ddl_events(self, target, **kw):
        """helper context manager that will apply appropriate DDL events
        to a CREATE or DROP operation."""

        target.dispatch.before_drop(
            target, self.connection, _ddl_runner=self, **kw
        )
        yield
        target.dispatch.after_drop(
            target, self.connection, _ddl_runner=self, **kw
        )


class SchemaGenerator(InvokeCreateDDLBase):