Install Python from the official source. Then, open the terminal or command line and type commands below for corresponding platform:
cd \path\to\project
python -m venv venv
venv\Scripts\activate
pip install -r requirements.txt
cd \path\to\project
venv\Scripts\activate
python run.py
cd /path/to/project
python -m venv venv
source venv/bin/activate
pip install -r requirements.txt
cd /path/to/project
source venv/bin/activate
python run.py