0.3 Write a Python program that manages a store with the following specifications:0.3.1 Program flow:1. When the program starts, main() calls readStoreItems() that asks the user to input a file name which contains the store items. If the file is notfound, appropriate message should be shown and exceptions should be handled. The program should keep asking the user for a file name until a file isfound.2. When a file is found, the program reads the available store items (item name and price) from the file and stores them in a dictionary which is returned tothe main() function. A sample input file is shown below:Milk4.95Tea3.0Coffee18.53. The printMenu() is then called to display the menu with the following options:1 Display all items.2 Add an item3 Remove an item4 Update the price of an item5 Save the items to a file6 Exit4. The program then prompts the user to input a selection.5. Every time the user makes invalid selection, a message is displayed, and the user is asked to input another selection until a valid selection is made.6. After the execution of every selection, the menu is displayed again, and the user is prompted to enter a selection until he selects option 6.0.3.2 Coding specification:1. Define a class Item that has the following methods:. displayAllItems: Display all available items (Item name and price).• addItem: Ask the user to input a new item name to add. If the item already exists, a message should be shown, and the item is not added. If theitem is not found, ask the user to input the price for that item, then add the item and its price to the item list (the dictionary).• removeItem: Ask the user to input an item to remove, if the item is not available, an appropriate error message should be shown, otherwise, theitem is removed.• updateItem: Ask the user for an Item to update. If the item is not available, an appropriate error message should be displayed, otherwise, ask theuser for the new price and update it. If the price is not valid an appropriate error message should be displayed.• saveItems: Ask the user to input a file name and save all items in the dictionary to the file. Appropriate exceptions should be handled.2. The main() function should• Create an object "myStore" from Item class. Ask the user to select an input file• Display the menu and ask the use to select an option from the menu• Control the calls for the functions in Item class0.3.3 General requirements:1. Make sure to handle all required exceptions when dealing with files (read or write) or data type conversion.2. Provide appropriate documentation for the code.3. Define appropriate variables.4. Assume the data in the file is with valid format.• Sample program runEnter filename: myfile.txtError: the input file: myfile.txt is not foundEnter Filename: data.txtSelect your option1 Display all items2 Add an item3 Renove an iten4 Update the price of an item5 Save the items to a file6 Exit****Enter your selection: 1The available items are:Milk4.75Coffee18.50Bread4.20Tea2.1071Select your option1 Display all items2 Add an item3 Remove an iton4 Update the price of an ites5 Save the items to a file6 Exitinter your selection: 2Enter an Ites nase to add: TeaThe iten TeaThe aleate existe st cent be addedalSelect your optionDisplay all items2 Add t3 Remove an ite4 update the price of an ites5 Save the items to a file6 Exit.......Enter your selection: 2Enter an Its name to add: AppleEnter the new Ites Price: 2.8Apple has been added successfullySelect your option1 Display all items2 Add an ite3 Removeit4 update the price of an item5 Save the items to a file6 ExitEnter your selection: 3Enter an Itos nase to Rosove: PotatoThe item Potato is not available, try another itewww.******Select your option1Display all items2 Add an It3 Removeit4 update the price of an item5 Save the items to a file6 ExitDEN****************************inter your selection: 3Enter an Its name to Remove: TeaTea Has been removed successfullySelect your optionDisplay all items2 Add to3 Remove an ites4 update the price of an item5 Save the items to a fileExitMASEnter your selection: 4telectionEnter an ite Nase to update: TeaThe iten Tea is not available, try another itemSelect your optionDisplay all items2 Add an ite3 Remove an item3vit4 update the price of an itess Save the items to a file6 ExitEnter your selection: 4Enter an itos Nase to update: MilkEnter the new price: 4.1The price for: milk has been modified successfully, the new pr******************Select your option1 Display all items2 Addto3 Remove an item4 update the price of an ites5 Save the items to a file6 Exitinter your selection:Enter Filename: data.txt********Select your option1 Display all its2 Add an i3 Remove an iton4 update the price of an item5 Save the items to a file6 Exitinter your selection:Thank you for using my Program

def readStoreItems(): # use while loop to keep asking user for a valid filename while True:…

0.3 Write a Python program that manages a store with the following specifications: 0.3.1 Program flow: 1. When the program starts, main() calls readStoreItems() that asks the user to input a file name which contains the store items. If the file is not found, appropriate message should be shown and exceptions should be handled. The program should keep asking the user for a file name until a file is found. 2. When a file is found, the program reads the available store items (item name and price) from the file and stores them in a dictionary which is returned to the main() function. A sample input file is shown below: Milk 4.95 Tea 3.0 Coffee 18.5 3. The printMenu() is then called to display the menu with the following options: 1 Display all items 2 Add an item 3 Remove an item 4 Update the price of an item 5 Save the items to a file 6 Exit 4. The program then prompts the user to input a selection. 5. Every time the user makes invalid selection, a message is displayed, and the user is asked to input another selection until a valid selection is made. 6. After the execution of every selection, the menu is displayed again, and the user is prompted to enter a selection until he selects option 8. 0.3.2 Coding specification: 1. Define a class Item that has the following methods: . displayAllItems: Display all available items (Item name and price). • addItem: Ask the user to input a new item name to add. If the item already exists, a message should be shown, and the item is not added. If the item is not found, ask the user to input the price for that item, then add the item and its price to the item list (the dictionary). • removeItem: Ask the user to input an item to remove, if the item is not available, an appropriate error message should be shown, otherwise, the item is removed. • updateItem: Ask the user for an Item to update. If the item is not available, an appropriate error message should be displayed, otherwise, ask the user for the new price and update it. If the price is not valid an appropriate error message should be displayed. • saveItems: Ask the user to input a file name and save all items in the dictionary to the file. Appropriate exceptions should be handled. 2. The main() function should . Create an object "myStore" from Item class . Ask the user to select an input file • Display the menu and ask the use to select an option from the menu . Control the calls for the functions in them class 0.3.3 General requirements: 1. Make sure to handle all required exceptions when dealing with files (read or write) or data type conversion. 2. Provide appropriate documentation for the code 3. Define appropriate variables. 4. Assume the data in the file is with valid format • Sample program run: Enter filename: myfile.txt Error: the input file: myfile.txt is not found Enter filename: data.txt Select your option 1 Display all items 2 Add an item 3 Remove an item 4 Update the price of an item 5 Save the items to a file 6 Exit Enter your selection: 1 The available items are: MIIK 4.75 Coffee 18.50 Bread 4.20 Tea 2.10 Select your option Select yo option Display all items 2 All St update the price of an item 5 Save the items to a file & Exit Enter an ito name to add: Tea The item Tea already exists, it cannot be added Display all items 2 Allan ten update the price of an item Save the items to a file & vit ****..... Enter your selection: 2 inter an Its name to add: Apple Enter the new Ites Price: 2.8 Apple has been added successfully Select your option 1 Display all items 2 Add an to 3 vit date the price of an item S Save the items to a file 6 fait Enter your selection: 3 inter an ito name to Potato The item Potate is not available, try another ites 1 Display all tas 2 Add a Sto date the price of an item 5 Save the items to a file & bit inter your selection: 3 Tea Mas been removed successfully Select your option Display all items 2 Allan Ste update the price of an ites S Save the items to a file Int Enter your selection: Enter an iton Nane to update: Te The ten Tea is not available, try another it Select your option 3 Display all items 1 ts update the price of an ite Save the items to file a & frit inter your selection Enteritos Nane to update: Pilk inter the new price: 4.1 The price for: is has been modified successfully, the new **************** *************** Select your option Display all its 2 Add an its 3 ite update the price of an ite S Save the items to a file fait wwwww. inter your selection Enter filme datata Select your aption 1 Display all items 2 Add an Ste 3 oven its update the price of an ite Save the items to a file Thank you for using my Program