Python requirements

These 3 commands:

pip3 install markupsafe
pip3 install requests
pip3 install flask

Can be replaced with:

pip3 install markupsafe requests flask

Or, you can create a requirements.txt in the project folder with the following contents:

markupsafe==2.1.2
requests==2.28.1
flask==3.0.0

and after that install all the requirements at once:

pip3 install -r requirements.txt