+ @classmethod
+ def by_id(cls, db_conn: DatabaseConnection, id_: int) -> Todo:
+ """Get Todo of .id_=id_."""
+ for row in db_conn.exec('SELECT * FROM todos WHERE id = ?', (id_,)):
+ return cls.from_table_row(row, db_conn)
+ raise NotFoundException(f'Todo of ID not found: {id_}')
+