To use the app you need to make sure the requirements are installed. It is best to do this in a virtual environment OR use a Docker container.
sudo apt update && sudo apt install python3-pip python3-venv -y
python3 -m venv venv
. ./venv/bin/activate
Then you can run the tests. This can only be done if the dependencies in requirements.txt are installed.
# In the root of the project
pytest
Or you can run the app.
python3 app.py