my2dos/core/migrations/0007_userpreference_overview_lines.py

from django.db import migrations, models


class Migration(migrations.Migration):
    dependencies = [('core', '0006_userpreference')]
    operations = [
        migrations.AddField(
            model_name='userpreference',
            name='overview_lines',
            field=models.PositiveSmallIntegerField(default=4),
        ),
    ]