code: def is_sqlatype_numeric(coltype: Union[TypeEngine, VisitableType]) -> bool:
      
      coltype = _coltype_to_typeengine(coltype)
      return isinstance(coltype, sqltypes.Numeric)
docs: Is the SQLAlchemy column type one that inherits from :class:`Numeric`,
      such as :class:`Float`, :class:`Decimal`?