• use a dictionary to store menu items
• use a function to print formatted menu options
• use a while loop to create an interactive program
• check the user input using if branches
• check that an option is correct (verify that a dictionary key exists)
• use break to interrupt the program execution

Introduction

In this lab, we will be building an application that uses an interactive menu.

Let's say our high-level menu has the following options:

L : List A : Add U : Update D : Delete S : Save R : Restore Q : Quit

These key-option mappings will be stored in a dictionary in the main program.

print_main_menu() function

Write the print_main_menu() that accepts a dictionary of keys-options like the one shown above and prints the menu options stored in that dictionary in an easy-to-read format. Below is an example of the result of calling print_main_menu() (notice the question it asks at the top - it is part of the function output):

Example

Given the menu with the following options as mentioned above, the call to print_main_menu(main_menu) will output:

========================== What would you like to do? L - List A - Add U - Update D - Delete S - Save the data R - Restore data from file Q - Quit this program ==========================

Program flow

The expected program flow is:

• The main program starts with a menu of options given above
• Loop indefinitely (while the user didn't choose to exit):
  • Print the menu to the user
  • Get the user's choice from input()
  • Check if the user's choice is a valid option in the menu (is it one of the dictionary keys?).
    • If the input is a valid option, print the option that user selected
    • If not, simply continue from the top of the loop
  • If the user entered 'Q', break the while loop

Instructions

1. Fix TODO 1: Add the options from the instructions to the_menu dictionary inside the main program.

2. Fix TODO 2: Implement the "Quit" option, breaking from the while loop if the user input is an uppercase OR lowercase "Q".

3. Fix TODO 3: Check whether a provided option is a valid menu option.

Each time a valid menu option is provided, the program "echoes" it back to the user as follows:

print(f"You selected option {opt} to > {the_menu[opt]}.")

Hints

• Make sure you do not hard-code the menu options in your functions - the options need to be retrieved from the dictionary provided as a parameter to the function.

enter solution here: