import os# Function to convert a line from the inventory file to a dictionarydef line$\_$to$\_$dict$($line$)$: parts $=$ line.strip$().$split$(",")$ details $=$ parts$[6$:$]$ return $\{\text{'}$ID$\text{'}$: parts$[0],$ 'Name': parts$[1],$ 'Category': parts$[2],$ 'Quantity': int$($parts$[3]),$ 'Unit Price': float$($parts$[4]),$ 'Supplier Email': parts$[5],$ 'Details': details $\}$# Function to add an item to the inventorydef add$\_$item$()$: # Collect item information from the user id $=$ input$("$Enter the ID of the item: $")$ name $=$ input$("$Enter the name of the item: $")$ category $=$ input$("$Enter the category of the item: $")$ quantity $=$ int$($input$("$Enter the quantity of the item: $"))$ unit$\_$price $=$ float$($input$("$Enter the unit price of the item: $"))$ supplier$\_$email $=$ input$("$Enter the supplier email of the item: $")$ details $=[]$ while True: detail $=$ input$("$Enter a detail for the item $($press Enter to finish$)$: $")$ if not detail: break details.append$($detail$)$ # Convert item information to a line in the inventory file format item$\_$line $=$ f$"\{$id$\},\{$name$\},\{$category$\},\{$quantity$\},\{$unit$\_$price$\},\{$supplier$\_$email$\},\{\text{'},\text{'}.$join$($details$)\}$

$"$ # Append item to the inventory file with open$("$inventory$.$txt$","$a$")$ as file: file.write$($item$\_$line$)$ print$("$Item added successfully."$)$# Function to remove an item from the inventorydef remove$\_$item$()$: # Check if the inventory file exists if not os$.$path.exists$("$inventory$.$txt$")$: print$("$Inventory file not found."$)$ return # Collect item ID from the user id $=$ input$("$Enter the ID of the item to remove: $")$ # Check if item exists in inventory file with open$("$inventory$.$txt$","$r$")$ as file: lines $=$ file.readlines$()$ found $=$ False with open$("$inventory$.$txt$","$w$")$ as file: for line in lines: if line.strip$().$split$(",")[0]!=$ id: file.write$($line$)$ else: found $=$ True if found: print$("$Item removed successfully."$)$ else: print$("$Item not found."$)$# Function to update an item's informationdef update$\_$item$()$: # Collect item ID from the user id $=$ input$("$Enter the ID of the item to update: $")$ # Check if item exists in inventory file with open$("$inventory$.$txt$","$r$")$ as file: lines $=$ file.readlines$()$ found $=$ False updated$\_$lines $=[]$ for line in lines: if line.strip$().$split$(",")[0]==$ id: found $=$ True new$\_$name $=$ input$("$Enter the new name $($press Enter to skip$)$: $")$ new$\_$category $=$ input$("$Enter the new category $($press Enter to skip$)$: $")$ new$\_$quantity $=$ input$("$Enter the new quantity $($press Enter to skip$)$: $")$ new$\_$price $=$ input$("$Enter the new unit price $($press Enter to skip$)$: $")$ new$\_$email $=$ input$("$Enter the new supplier email $($press Enter to skip$)$: $")$ parts $=$ line.strip$().$split$(",")$ if new$\_$name: parts$[1]=$ new$\_$name if new$\_$category: parts$[2]=$ new$\_$category if new$\_$quantity: parts$[3]=$ new$\_$quantity if new$\_$price: parts$[4]=$ new$\_$price if new$\_$email: parts$[5]=$ new$\_$email line $=",".$join$($parts$)+"$

$"$ updated$\_$lines.append$($line$)$ if not found: print$("$Item not found."$)$ return # Write updated information back to the file with open$("$inventory$.$txt$","$w$")$ as file: file.writelines$($updated$\_$lines$)$ print$("$Item information updated successfully."$)$# Function to display all items' informationdef display$\_$all$\_$items$()$: if not os$.$path.exists$("$inventory$.$txt$")$: print$("$Inventory file not found."$)$ return with open$("$inventory$.$txt$","$r$")$ as file: for line in file: item$\_$dict $=$ line$\_$to$\_$dict$($line$)$ print$($item$\_$dict$)$# Main functiondef main$()$: while True: print$("$

Store XYZ Inventory Management System"$)$ print$("1.$ Add an Item to the Inventory"$)$ print$("2.$ Remove an Item from the Inventory"$)$ print$("3.$ Update an Item's Information"$)$ print$("4.$ Display all Items' Information"$)$ print$("5.$ Exit"$)$ choice $=$ input$("$Enter your choice $(1-5)$: $")$ if choice $==\text{'}1\text{'}$: add$\_$item$()$ elif choice $==\text{'}2\text{'}$: remove$\_$item$()$ elif choice $==\text{'}3\text{'}$: update$\_$item$()$ elif choice $==\text{'}4\text{'}$: display$\_$all$\_$items$()$ elif choice $==\text{'}5\text{'}$: print$("$Exiting program..."$)$ break else: print$("$Invalid choice. Please enter a number between $1$ and $5.")$# Entry point of the programif $\_\_$name$\_\_=="\_\_$main$\_\_"$: main$().$ make our output file as dictionry