it is a simple GUI based python project. i have created a simple interface where user can book lpg gas , track his booking records and cancel the bookings. this project is based on python language and using sql query storing the records of customers activity in the database. i have created 2 .py file , one is for booking interface and another is for appointment. you can download this zip file and simply run in jupyter notebook or spyder or anyother python interpreter.
In your appointment.py, some errors were there in your code. I have updated it. please merge it in your main branch.