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# blog/urls.py — application namespace defined here
from django.urls import path
from . import views

app_name = 'blog'

urlpatterns = [
    path('',            views.PostListView.as_view(),   name='post-list'),
    path('<int:pk>/',   views.PostDetailView.as_view(), name='post-detail'),
    path('create/',     views.PostCreateView.as_view(), name='post-create'),
]

# accounts/urls.py
from django.urls import path
from . import views

app_name = 'accounts'

urlpatterns = [
    path('register/', views.RegisterView.as_view(), name='register'),
    path('profile/',  views.ProfileView.as_view(),  name='profile'),
]

# mysite/urls.py — root URLconf
from django.contrib import admin
from django.urls import path, include

urlpatterns = [
    path('admin/',    admin.site.urls),
    path('blog/',     include('blog.urls')),      # app_name sets namespace
    path('accounts/', include('accounts.urls')),
    path('auth/',     include('django.contrib.auth.urls')),
]

# Reversing namespaced URLs in views
from django.urls import reverse
from django.shortcuts import redirect

def my_view(request):
    return redirect(reverse('blog:post-list'))

# Reversing in templates
# {% url 'blog:post-detail' pk=post.pk %}
# {% url 'accounts:register' %}