smcoll

# -*- coding: utf-8 -*-
from __future__ import unicode_literals
import uuid

from django.db import migrations, models


def fill_mymodel_uuid(apps, schema_editor):
    db_alias = schema_editor.connection.alias
    MyModel = apps.get_model('myapp', 'MyModel')

hrldcpr

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!