code: def run_async(coro: Coroutine) -> None:
      
      loop = asyncio.get_event_loop()
      try:
          loop.run_until_complete(coro)
      finally:
          loop.run_until_complete(Tortoise.close_connections())
docs: Simple async runner that cleans up DB connections on exit.
      This is meant for simple scripts.
  
      Usage::
  
          from tortoise import Tortoise, run_async
  
          async def do_stuff():
              await Tortoise.init(
                  db_url='sqlite://db.sqlite3',
                  models={'models': ['app.models']}
              )
  
              ...
  
          run_async(do_stuff())