def process_formdata(self, valuelist):
        try:
            self.data = list(self.coerce(x) for x in valuelist)
        except __HOLE__:
            raise ValueError(
                self.gettext(
                    'Invalid choice(s): one or more data inputs '
                    'could not be coerced'
                )
            )
dataset/ETHPy150Open kvesteri/wtforms-components/wtforms_components/fields/select_multiple.py/SelectMultipleField.process_formdata