django 2

project1\urls.py

from django.contrib import admin
from django.urls import path, include

urlpatterns = [
    path('admin/', admin.site.urls),
    path('music/', include('music.urls')),
    path('watchman/', include('watchman.urls')),
]

-------------------------------------------

music\urls.py

from django.urls import path
from . import views

urlpatterns = [
    path('', views.index, name='index'),
]

-------------------------------------------

music\views.py

from django.shortcuts import render

from django.http import  HttpResponse

def index(request):

    return HttpResponse('<h1>music app homepage</h1>')

-----------------------------------------------

project1\settings.py

INSTALLED_APPS = [

    'django.contrib.admin',

    'django.contrib.auth',

    'django.contrib.contenttypes',

    'django.contrib.sessions',

    'django.contrib.messages',

    'django.contrib.staticfiles',

    'watchman',

]