Current Django Version and next 4.0

anjanesh

How do I know what default version of Django is being used at shared Opal5 ?
When Django 4.0 gets released this December, how do I make use of it in a new app ?
pip install Django==4.0.0. will do ?

sean

anjanesh You can check your installed version for an app via django.VERSION, eg:

~/apps/my_app/env/bin/python -c "import django; print(django.VERSION)"

Our Django installer always installs the latest release, so when you create a new app after 4.0 is released it will be that version.

When you want to upgrade Django in one of your installed apps then follow the Django upgrade instructions. The specific commands for upgrading Django in a Django app installed via our dashboard are:

cd ~/apps/my_app
source env/bin/activate
python -m pip install -U Django

anjanesh

sean Thank You.

anjanesh

(3, 2, 3, 'final', 0)

How do I upgrade to 3.2.8 for current setup of an already existing app ?

sean

anjanesh

cd ~/apps/my_app
source env/bin/activate
python -m pip install -U Django==3.2.8

anjanesh

Thank You.

anjanesh

How safe is it to upgrade to 4.1 ? (python -m pip install -U Django==4.1)

sean

anjanesh the official guide to upgrading Django is: How to upgrade Django to a newer version

If you've read the instructions, understand the breaking changes (if any), updated your code to be compatible with the newest version, and have done everything else you're supposed to do when upgrading Django then it is safe to upgrade.

Parthian

I'm upgrading from a 3.x version to 4.1.
(venv) $ python -m pip install -U django==4.1
But I get ERROR: Could not find a version that satisfies the requirement django==4.1 (from versions: 1.1.3, .... loads of versions to ... 3.2.16)
ERROR: No matching distribution found for django==4.1

I've upgraded Pip.
Stuck.

anjanesh

Parthian What happens when you do pip install -U Django==4.1.2 ?

sean

Parthian your virtualenv is ~~probably~~ using Python 3.6 which is not compatible with Django 4+.

To solve this either:

Create a new Django app via your Opalstack dashboard and re-deploy your project under the new app. New Django apps use Python 3.10 by default, or....
Make a Python 3.10 virtualenv in your project directory and install Django, uwsgi, and all of your project dependencies into that. You can make a Python 3.10 virtualenv like so:

deactivate 
cd ~/apps/name_of_app
mv env env.old
python3.10 -m venv env
source env/bin/activate
pip install django==4.1.2 uwsgi # and whatever else

Parthian

No improvement. Discovered it's to do with the Python version.
"Django 4.0 supports Python 3.8, 3.9, and 3.10." I'm on python 3.6.8.

I think upgrading Python involves a local install. Whereas a new Django App will automatically get a later version. That's possibly easier...

Parthian

Thank Sean, decided to go with the venv change. Seems more repeatable. Have you missed the source.. activate step?

sean

Parthian ave you missed the source.. activate step?

yes, my bad. fixed.

Parthian

Super. Nice python 3.10.8 and django 4.1.2.