如何将django模型中的多对多按个人分开？

from django.db import models

class Person(models.Model):
    name = models.CharField(max_length=100)

class Group(models.Model):
    name = models.CharField(max_length=100)
    members = models.ManyToManyField(Person, related_name='groups')

# 获取特定个人所属的所有组
def get_groups_for_person(person_id):
    person = Person.objects.get(id=person_id)
    groups = person.groups.all()
    return groups

persons = Person.objects.prefetch_related('groups')
for person in persons:
    print(person.name, [group.name for group in person.groups.all()])

from django.db.models.signals import m2m_changed
from django.dispatch import receiver

@receiver(m2m_changed, sender=Group.members.through)
def group_members_changed(sender, instance, action, reverse, model, pk_set, **kwargs):
    if action == "post_add":
        # 执行一些操作
        pass