Installing Flask in a Raspberry Pi
01 Install virtual environment
sudo apt install python3-venv
02 Go to www folder
cd /var/www/
03 Create a flask app server here
sudo mkdir TacticalApp
04 Go into the folder
cd TacticalApp
05 Create a virtual environment in this folder
sudo python3 -m venv venv
06 Check who owns the venv
stat venv/
07 Change the owner to your user (mine is mrb)
sudo chown -R mrb:mrb venv
08 Activate de virtual environment
. venv/bin/activate
09 Deactivate de virtual environment
deactivate
10 Install Flask
pip3 install flask
