Firstly, If you don't have Python 3.x.x to your PC, download and install to your PC.
Make sure that you have Python is installed successfully in you PC by using this command:
python --version
Creating a virtual environment to the project directory:
python -m venv ./.venv
To activate virtual environment (with powershell):
cd .venv/Scripts
./activate
cd ../../
Install pip packages via command line after activating the virtual environment:
pip install -r requirements.txt
To run, use command:
python app.py
and go to http://127.0.0.1:5000 (or location that said the command line message).