def get_full_name(self):
        """
        Returns the first_name plus the last_name, with a space in between.
        """
        full_name = (self.first_name, self.last_name) % '%s %s'
        return full_name.strip()
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/contrib/auth/models.py/AbstractUser.get_full_name/swapped operands of `%`