Method length_error

traitlets/traitlets.py:3700–3705

(self, obj: t.Any, value: t.Any)

        super().__init__(trait=trait, default_value=default_value, **kwargs)

    def length_error(self, obj: t.Any, value: t.Any) -> None:
        e = (
            "The '%s' trait of %s instance must be of length %i <= L <= %i, but a value of %s was specified."
            % (self.name, class_of(obj), self._minlen, self._maxlen, value)
        )
        raise TraitError(e)

    def validate_elements(self, obj: t.Any, value: t.Any) -> t.Any:
        length = len(value)