Method _check_delimiter

catboost/python-package/catboost/core.py:880–884

(self, delimiter)

                raise CatBoostError("Invalid {} path='{}': file does not exist.".format(name, item))

    def _check_delimiter(self, delimiter):
        if not isinstance(delimiter, STRING_TYPES):
            raise CatBoostError("Invalid delimiter type={} : must be str.".format(type(delimiter)))
        if len(delimiter) < 1:
            raise CatBoostError("Invalid delimiter length={} : must be > 0.".format(len(delimiter)))

    def _check_column_description_type(self, column_description):
        """