python -m venv .venv
source .venv/bin/activate ==> Linux
source .venv/Scripts/activate ==> Windows
pip install -r requirements.txt
python app.py
deactivate
python -m venv .venv
source .venv/bin/activate ==> Linux
source .venv/Scripts/activate ==> Windows
pip install -r requirements.txt
python app.py
deactivate