Ubuntu
Installing Flask Guide 20.04 LTS
https://asdkazmi.medium.com/deploying-flask-app-with-wsgi-and-apache-server-on-ubuntu-20-04-396607e0e40f
$ sudo apt-get install python3
$ sudo apt-get install python3-pip
$ sudo apt-get install apache2
$ sudo apt-get install libapache2-mod-wsgi-py3
sudo pip3 install flask, numpy, pandas