'Create 8 users and return them'

def _create_users(self):

    users = []
    for i in range(8):
        username = 'user{}'.format(i)
        email = 'test+user{}@edx.org'.format(i)
        user = User.objects.create_user(username, email, 'foo')
        user.is_active = True
        user.save()
        users.append(user)
    return users
