Django create mptt groups in two ways.

models.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
'''
方法二：mptt自有的方法见http://django-mptt.github.io/django-mptt/models.html#registration-of-existing-models
'''

import mptt
from django.contrib.auth.models import Group


mptt.fields.TreeForeignKey(Group, blank=True, null=True).contribute_to_class(Group, 'parent')
mptt.register(Group, order_insertion_by=['name'])

usergroup>admin.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
'''
方法一
'''

from django.contrib import admin
from mptt.admin import MPTTModelAdmin
from .models import UserGroup


# Django Admin Site中以层级结构显示
admin.site.register(UserGroup, MPTTModelAdmin) 

usergroup>models.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
'''
方法一
'''

from mptt.models import MPTTModel, TreeForeignKey
from mptt.managers import TreeManager

from django.db import models
from django.contrib.auth.models import Group, GroupManager


class UserGroup(MPTTModel, Group):
    some_fields = models.CharField('Any field you want to add.', max_length=100)
    parent = TreeForeignKey('self', null=True, blank=True, related_name='children', db_index=True)
    objects = GroupManager()
    objects = TreeManager()