yes, precisely. just as pep8 suggests.
but it also suggests another way (when we leave no symbols after the `(`), so alternatively, this whole piece could be written like this:
```
value.all = partial(
    lambda self, scalar, *args: self._scalar(scalar, *args, mode='all'), self,
    scalar)
```
looks a bit prettier to me, so i can change these parts. what do you think?