Please indent the second line when you have continued strings. When you have a multiline string like this, you can also do:

```python
err_msg = (
   u"An error occurred while creating submission "
   u"{} for student item: {}"
   .format(model_kwargs, student_item_dict)
)
```

Also, I know you shortened the lines at my request and I appreciate it. But it's fine to me if the occasional line goes a little over if it significantly helps readability. For instance, I would have probably written this as:

```python
   except DatabaseError:
        error_message = (
            u"An error occurred while creating submission {} for student item: {}"
            .format(model_kwargs, student_item_dict)
        )
```

Which goes 2 columns over, but is more readable. Can we say a soft cap at 80, and a hard one at 100?