[Fixed]-Django says – No module named 'blog'

Directory structure is unusual. More usual and the one that matches your app being named blog would be

myproject/
├── myproject
│   ├── __init__.py
│   ├── __pycache__
│   │   ├── __init__.cpython-36.pyc
│   │   ├── settings.cpython-36.pyc
│   │   ├── urls.cpython-36.pyc
│   │   └── wsgi.cpython-36.pyc
├── blog
│   ├── __init__.py
│   ├── admin.py
│   ├── apps.py
│   ├── migrations
│   │   └── __init__.py
│   ├── models.py
│   ├── tests.py
│   └── views.py
│   ├── settings.py
│   ├── urls.py
│   └── wsgi.py
├── db.sqlite3
└── manage.py

My problem is solved by adding the path of the app in the settings.py of myproject in this below format

INSTALLED_APPS = [
'blog.apps.BlogConfig', # <app_name>.apps.<class_name>
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',  ]

I had a similar issue .Turns out I had already registered my app in the settings.py before running ‘python manage.py startapp #myapp.

I usually add the config path to installed apps to avoid this problem. So installed apps would look like this:

NSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'blog,apps.BlogConfig',