Method insert

src/werkzeug/datastructures/mixins.py:63–64

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

        _immutable_error(self)

    def insert(self, pos: t.Any, value: t.Any) -> t.NoReturn:
        _immutable_error(self)

    def pop(self, index: t.Any = -1) -> t.NoReturn:
        _immutable_error(self)