Irrespective of the kind of Arm machine you use, the instructions for this learning paths are going to be the same. You need to login via SSH into your remote server or open a terminal on your local VM or physical machine. This learning path uses Ubuntu 22.04 LTS.
Ubuntu 22.04 offers pre-installed Python 3.10 binaries. You can just use this version or alternatively, you can install the latest version of Python. A quick way to install the most recent version of Python is via Deadsnakes PPA .
Add the Deadsnakes repository:
sudo add-apt-repository ppa:deadsnakes/ppa sudo apt update
Install Python 3.12.
sudo apt install python3.12 python3.12-venv
Check that Python 3.12 works as expected, shown in the output below:
~$ python3.12 Python 3.12.0 (main, Oct 21 2023, 17:42:12) [GCC 11.4.0] on linux Type "help", "copyright", "credits" or "license" for more information. >>> exit()
This learning path uses Nginx as the web server and PostgreSQL as the database for the Django application.
To install Nginx using a package manager on Ubuntu:
sudo apt install nginx
To install PostgreSQL using a package manager on Ubuntu, follow the postgresql.org install instructions .
You can also use a different web server and database. If you do, you will have to change the appropriate configuration files in the later sections.
As you will use the
tree command in later sections to inspect your directory file tree structure, ensure you have the package installed first:
sudo apt install tree
Using a virtual environment when dealing with python code is always good practice. This is because it allows you to run multiple applications with different dependencies in the same OS without conflicts.
Create and activate the virtual environment:
python3.12 -m venv venv source venv/bin/activate
The prompt of your terminal has
(venv) as a prefix and this means the virtual
environment is now active. From this point on, you will run all the commands inside your virtual environment.
With the active virtual environment, you can now install the Python dependencies for running your Django application.
pip install django gunicorn psycopg[binary]
After the installation, verify that you have the right packages installed:
The output should look similar to (version numbers might change):
Package Version ----------------- ------- asgiref 3.7.2 Django 4.2.7 gunicorn 21.2.0 packaging 23.2 pip 23.3.1 psycopg 3.1.12 psycopg-binary 3.1.12 sqlparse 0.4.4 typing_extensions 4.8.0
In order to have a production-like installation, you need
gunicorn which is a
Python WSGI (Web Server Gateway Interface) HTTP server for UNIX and is
compatible with Django.
To verify you are able to run Django and Gunicorn, try importing them with Python as shown below:
(venv) ~$ python Python 3.12.0 (main, Oct 21 2023, 17:42:12) [GCC 11.4.0] on linux Type "help", "copyright", "credits" or "license" for more information. >>> import django >>> import gunicorn >>> django.VERSION (4, 2, 7, 'final', 0) >>> gunicorn.version_info (21, 2, 0)
Whenever you are in the virtual environment, just type
python (without appending any version) as it will point to the python binary used
to create the virtual environment.