class_docstr: Marshmallow validation error when dataset columns have a duplicate on the list
class_docstr_tok: ["Marshmallow","validation","error","when","dataset","columns","have","a","duplicate","on","the","list"]
code: def __init__(self) -> None:
      super().__init__(
          [_("One or more columns are duplicated")],
          field_name="columns",
      )
  
imports: from flask_babel import lazy_gettext
  from marshmallow.validate import ValidationError
  from superset.commands.exceptions import CommandException, CommandInvalidError, CreateFailedError, DeleteFailedError, ForbiddenError, ImportFailedError, UpdateFailedError
label_desc: Use image node_id 1 to create a new DatasetColumnsDuplicateValidationError object from inherited base classes: ValidationError with example: obj = DatasetColumnsDuplicateValidationError()