You have been contacted and are thinking about developing a "first" prototype for a mobile app that let users save a shopping list on their devices. How would you create a preliminary architectural design for it$?$ Chose the necessary tools $($UML or other diagramming tools$)$ to show your strategy. Then create a series of sketches representing the key screens for a paper prototype for the shopping list app. Use Python to write a script that will print out the names and number of pages in your prototype and the sequence or flow of the pages.

Feel free to use one of the following UML tools to create your diagrams for this assignment:

UMLet Links to an external site.

Gliffy Links to an external site.

Microsoft Visio Links to an external site. $($This tool is not free, so only use it if you already have access to it$.$ No purchase required.$)$

Submit the source file $(.$py$),$ the screenshots of a successful execution of your program, and all related diagrams in a zipped folder.