class_docstr: Marshmallow validation error for dataset already exists
class_docstr_tok: ["Marshmallow","validation","error","for","dataset","already","exists"]
code: def __init__(self) -> None:
      super().__init__(
          _("A database with the same name already exists."),
          field_name="database_name",
      )
  
imports: from flask_babel import lazy_gettext
  from marshmallow.validate import ValidationError
  from superset.commands.exceptions import CommandException, CommandInvalidError, CreateFailedError, DeleteFailedError, ImportFailedError, UpdateFailedError
  from superset.exceptions import SupersetErrorException, SupersetErrorsException
label_desc: Use image node_id 1 to create a new DatabaseExistsValidationError object from inherited base classes: ValidationError with example: obj = DatabaseExistsValidationError()