code: def get_dialect(mixed: Union[SQLCompiler, Engine, Dialect]) -> Dialect:
      
      if isinstance(mixed, Dialect):
          return mixed
      elif isinstance(mixed, Engine):
          return mixed.dialect
      elif isinstance(mixed, SQLCompiler):
          return mixed.dialect
      else:
          raise ValueError("get_dialect: 'mixed' parameter of wrong type")
docs: Finds the SQLAlchemy dialect in use.
  
      Args:
          mixed: an SQLAlchemy :class:`SQLCompiler`, :class:`Engine`, or
              :class:`Dialect` object
  
      Returns: the SQLAlchemy :class:`Dialect` being used