To run this program, will need to create a virtual enviroment, and then instal requeriments.txt
By this way a request will be made using app.py as server and client.py to make the request
cd fee_and_tax
python3 -m venv venv
source venv/bin/activate
pip3 install -r requirements.txt
python app.pycd fee_and_tax
source venv/bin/activate
python client.py