mongodb-engine | Django MongoDB Backend

That is because django-nonrelis a fork from the original Django project.

You can consider that as a different project. django-nonrel was developed side by side with the original Django project until version 1.6, the last commit for nonrel is 2 years old.

To sum it up, if you want to use django-nonrel it is not recommended and you are limited to latest Django version it supports - 1.6.

The django-nonrel project is dead - If you want to use a NoSQL I will recommend not using Django. There is't any official support for that, and I did not find any on-going projects (third-party) that exist anymore.

I like using django-mongoengine as it makes things clearer when dealing with MongoDB models.

For example, you can create structured Documents that are going to be transformed into models or EmbeddedDocument`s that are structured documents to be used in an already existed model.

I found few reasons why MongoDb-engine(Python ORM form mongo database) tutorial was not working:

1. It supports Python version <3.5

2. And to connect to the database you should put the following code in settings.py

The -m option to python allows you to (try to) run a module/package. From the docs:

-m

Search sys.path for the named module and execute its contents as the __main__ module.

Since the argument is a module name, you must not give a file extension (.py). The module name should be a valid absolute Python module name, but the implementation may not always enforce this (e.g. it may allow you to use a name that includes a hyphen).

Package names (including namespace packages) are also permitted. When a package name is supplied instead of a normal module, the interpreter will execute .__main__ as the main module. This behaviour is deliberately similar to the handling of directories and zipfiles that are passed to the interpreter as the script argument.

So, the thing following -m needs to support being run by defining a __main__, which is why python -m pymongo then states "No module named pymongo.__main__".

For the case of Django, or specifically, django-nonrel: It looks like django-nonrel hasn't been updated in years, and the most recent branch looks like a fork of Django 1.7. Django proper added django.__main__ in 1.9, so that's why the docs you're reading are misleading you. You might be able to use the Django 1.7 tutorial, but a NoSQL database might heavily affect the models and queries, so using the tutorial provided by the nonrel project (if it does) would be preferred.