"python3 manage.py shell" using IPython instead of Python.

[J Arun Mani]

Hello, I was learning Django from the official docs.
To run the command python3 manage.py shell, I thought of using IPython, so I ran this command ipython3 manage.py shell. First the command gave me a list of available commands (for manage.py), then it gave me the IPython prompt. Me, confused, ran the same command with python3, but I still got IPython. I closed the shell and launched it again, I went back to home directory and checked if IPython and Python are working fine, yes they were, they were working with the right way.

So I cded the tutorial's directory and ran python3 manage.py shell but again got IPython shell.
The issue is why am I getting IPython when I run the command for normal Python interpreter?
I think Django has modified some environment flags or something else. I thought of posting this to mailing-list, as I'm a noob and this could be a "feature"; but I got an error that there is googlegroups cannot find "django-users" account. I have attached a link to the screenshot for sake of convenience.

My System:
Django installed using : pip (only for user, non-sudo)
OS : Debian 10
Python version : 3.7.3
Terminal : GNOME Terminal
Shell : fish

[Mariusz Felisiak]

I don't see any issue in the ticket description. Using ipython is a ​documented behavior.

[J Arun Mani]

Replying to felixxm:

I don't see any issue in the ticket description. Using ipython is a ​documented behavior.

But I'm not using django-admin shell -i ipython I ran the command like this python3 manage.py shell, previously (in previous tutorials of Django from other websites), this command invoked the default Python 3 interpreter, then why suddenly did it start using IPython?

[Mariusz Felisiak]

Documentation is clear for me: "By default, Django will use IPython or bpython if either is installed." so if you have IPython or bpython installed then Django will use one of them. If you have both you can specify which one you want with -i argument.