Fitness Booking system on Python GUI tkinter with database sql

A fitness booking system that full fills these criteria:

Users are able to sign up for account
Users are able to login on account with authentication
Users are able to see their own bookings (with details) on profile
User can book specific date & times at the gym
Users can also book specific machines
Users can edit own bookings
Users can delete their own bookings
Users’ books will be verified by system to indicate no double bookings
Users’ will be denied if bookings is unavailable on that date/time
Other users will be notified once a booking has been deleted

- explanations of
- try & catch / exception handlings
- file handlings
- gui/user interfaces
- Complex loops / selection / sorting
- inheritance /polymorphism
- any other OOPs complexity

- comments explaining the things above