new_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  
  from django.db import migrations, models
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('courses', '0004_course_institution'),
      ]
  
      operations = [
          migrations.AlterField(
              model_name='problemset',
              name='solution_visibility',
              field=models.CharField(default=b'S', max_length=20, verbose_name='Solution visibility', choices=[(b'H', 'Official solutions are hidden'), (b'S', 'Official solutions are visible when solved'), (b'V', 'Official solutions are visible')]),
          ),
      ]
  
subject: Add a missing migration for Course.solution_visibility description