python language

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Online store: users should be able to order items for sale or combo items (items when bought together trigger a discount). The order should include number of items and prices for items and should generate and display receipts.

Basic:

1. Project should have a functioning menu
2. Project should have adequate functions (minimum 3 functions)
3. Project should make use of files to save the data
4. Project should handle adequate exceptions
5. Project should display information formatted adequately
6. Project should make use of lists or dictionaries as appropriate.
7. Project should follow adequate naming conventions for variables and functions, and should have comments as appropriate.

Intermediate:

8. Project should use an object-oriented approach, (inheritance is optional)