└── platform: main folder of our project
    ├── avatars: store the avatar for each user
    ├── error_handlers: folder for error handling
    ├── friends: folder for all the friends data
    ├── login: folder for login page
    ├── matching: folder for welcome page
    ├── myproject: main folder contains settings and urls
    ├── templates: folder for all the HTML files
    ├── welcome: folder for welcome page
    ├
    ├── db.sqlite3: store the back-end data with sqlite
    ├── manage.py: the code to start the website
    ├── migrate.sh: shell script for migrate
    └── README.md  

└── each app(page) folder
    ├── __init__.py
    ├── admin.py
    ├── apps.py
    ├── models.py
    ├── tests.py
    ├── urls.py
    ├── views.py
    └── ...