未配置Admin站点的Django+DRF项目使用Pympler的muppy时触发LookupError错误的解决咨询

我有一个没有配置Admin站点的Django+DRF应用，运行一直都很顺畅。不过当我在代码里这样使用Pympler和muppy时：

class DashboardViewSet(
    SpecialEndpoint,
):
    def list(self, request, *args, **kwargs):
        from pympler import tracker
        tr = tracker.SummaryTracker()
        [...]
        tr.print_diff()

        return Response(...)

却触发了如下错误：

File "src/api/views/case_manager/dashboard/dashboard_viewset.py", line 33, in list
    tr = tracker.SummaryTracker()
  File "lib/python3.13/site-packages/pympler/tracker.py", line 45, in __init__
    self.s0 = summary.summarize(muppy.get_objects())
                                ~~~~~~~~~~~~~~~~~^^
  File "lib/python3.13/site-packages/pympler/muppy.py", line 42, in get_objects
    tmp = [o for o in tmp if not ignore_object(o)]
                                 ~~~~~~~~~~~~~^^^
  File "lib/python3.13/site-packages/pympler/muppy.py", line 17, in ignore_object
    return isframe(obj)
  File "lib/python3.13/inspect.py", line 507, in isframe
    return isinstance(object, types.FrameType)
  File "lib/python3.13/site-packages/django/utils/functional.py", line 280, in __getattribute__
    value = super().__getattribute__(name)
  File "lib/python3.13/site-packages/django/utils/functional.py", line 251, in inner
    self._setup()
    ~~~~~~~~~~~^^
  File "lib/python3.13/site-packages/django/contrib/admin/sites.py", line 605, in _setup
    AdminSiteClass = import_string(apps.get_app_config("admin").default_site)
                                   ~~~~~~~~~~~~~~~~~~~^^^^^^^^^
  File "lib/python3.13/site-packages/django/apps/registry.py", line 165, in get_app_config
    raise LookupError(message)
LookupError: No installed app with label 'admin'.

我排查后发现，问题应该是Django会在全局变量里延迟创建一个DefaultAdminSite实例，而muppy在遍历获取所有对象进行内存分析时，访问到了这个未初始化的实例，进而触发了找不到admin应用的错误。

有没有大佬知道该怎么绕开这个问题呀？

备注：内容来源于stack exchange，提问作者Thorben Croisé