<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_column_names(engine: Engine, tablename: str) -> List[str]: """ Get all the database column names for the specified table. """

    return [info.name for info in gen_columns_info(engine, tablename)]