Check heroku’s python ‘Get Started‘ docs for latest requirements. As per this, python3.9 is required. So let’s first install that:
On my Ubuntu 20 system, to install python 3.9:
sudo apt-get install software-properties-common
sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt-get update
sudo apt-get install python3.9
Install heroku cli if you don’t have it yet:
sudo snap install heroku --classic
Login to heroku:
heroku login
Clone the provided sample package:
git clone https://github.com/heroku/python-getting-started.git
mv python-getting-started emr
cd emr
Create an app on Heroku, which prepares Heroku to receive your source code:
heroku create
heroku create
› Warning: heroku update available from 7.52.0 to 7.53.1.
Creating app... done, ⬢ safe-topaz-31075
https://safe-topaz-31075.herokuapp.com/ | https://git.heroku.com/safe-topaz-31075.git
Now, we can deploy the code:
git push heroku main
To make sure one instance is always running:
heroku ps:scale web=1
Shortcut to open the website:
heroku open
To view logs:
heroku logs --tail
Create a virtualenv for deployment:
virtualenv -p python3.9 venv
virtualenv -p python3.9 venv
created virtual environment CPython3.9.5.final.0-64 in 142ms
creator CPython3Posix(dest=/home/joel/emr/venv, clear=False, global=False)
seeder FromAppData(download=False, pip=latest, setuptools=latest, wheel=latest, pkg_resources=latest, via=copy, app_data_dir=/home/joel/.local/share/virtualenv/seed-app-data/v1.0.1.debian.1)
activators BashActivator,CShellActivator,FishActivator,PowerShellActivator,PythonActivator,XonshActivator
Upgrade pip:
pip3 install --upgrade pip
Install all dependencies:
cat requirements.txt | xargs -n 1 pip3 install --retries 1
You can start the app locally with
./manage.py runserver
To add your own app, remove the directory hello, and create own app with:
manage.py startapp newappname
Can add one’s own custom domain for this site with:
heroku domains:add domainname.tld
Next on the domain’s DNS panel, add CNAME entry to point to the heroku name: