I think it might make more sense for this to be ```user='default'```, as opposed to ```default='default'```. The first part is the argument name, and the argument you are passing to the ```login``` method is the user, which is why it may be best to call this ```user```. The second part is the default value of that argument, and in this case the default value of the user argument is ```default```.

I hope that's clearer than it sounds. ;)