ImportError：未命名模块<appname>

Question

A lot of other people have come across the error No module named <appname> . However. I couldn't relate to the problem they had. I tried to run manage.py shell and then imported the app (blog). It worked. So what is wrong in my code?

urls.py:

from django.conf.urls import include, url
from django.contrib import admin

urlpatterns = [
    url(r'^admin/', include(admin.site.urls)),
    url(r'^$', 'projectname.blog.views.index', name = 'index')
]

settings.py:

INSTALLED_APPS = (
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'blog',
)

views.py:

from django.shortcuts import render

from blog.models import posts

def home(request):
    return render('index.html', {'title': 'My First Post'})

Error message:

Request Method:     GET
Request URL:    http://localhost:8000/
Django Version:     1.8.5
Exception Type:     ImportError
Exception Value:    

No module named blog

Exception Location:     /usr/lib/python2.7/importlib/__init__.py in import_module, line 37
Python Executable:  /usr/bin/python
Python Version:     2.7.6

Answer 1

A couple of issues:

1. Your project is not a package, so you shouldn't be adding projectname
2. Your view name is home , not index

Therefore, you should be using:

url(r'^$', 'blog.views.home', name='index')

Answer 2

Don't use your project name in path to specific app. Instead of

url(r'^$', 'projectname.blog.views.index', name = 'index')

use

url(r'^$', 'blog.views.index', name = 'index')

Answer 3

In your views.py you were defined the home instead of index Try below one

def index(request):
    return render('index.html', {'title': 'My First Post'})