如何在Django中根据域名或TLD设置urlpatter？

INSTALLED_APPS = [
    ...
    'django.contrib.sites',
    ...
]

SITE_ID = 1

MIDDLEWARE = [
    ...
    'django.contrib.sites.middleware.CurrentSiteMiddleware',
    ...
]

from django.contrib.sites.models import Site

def get_domain(request):
    site = Site.objects.get_current()
    domain = request.META.get('HTTP_HOST', site.domain)
    tld = domain.split('.')[-1]
    if tld == 'com':
        return 'www.example.com'
    elif tld == 'cn':
        return 'www.example.cn'
    else:
        return domain

from django.urls import path
from . import views
from .settings import get_domain

urlpatterns = [
    path('', views.home, name='home'),
    path('about/', views.about, name='about'),
]

if get_domain(request) == 'www.example.com':
    urlpatterns += [
        path('products/', views.products, name='products'),
    ]
elif get_domain(request) == 'www.example.cn':
    urlpatterns += [
        path('services/', views.services, name='services'),
    ]