Method setdefault

starlette/middleware/sessions.py:126–129

(self, key: str, default: typing.Any = None)

        return item

    def setdefault(self, key: str, default: typing.Any = None) -> typing.Any:
        if key not in self:
            self.mark_modified()
        return super().setdefault(key, default)

    def update(self, *args: typing.Any, **kwargs: typing.Any) -> None:
        self.mark_modified()