I need help with the following python problem.

itemsInBackpack = ["book", "computer", "keys", "travel mug"] while True: print("Would you like to:") print("1. Add an item to the backpack?") print("2. Check if an item is in the backpack?") print("3. Quit") userChoice = input() if(userChoice == "1"): print("What item do you want to add to the backpack?") itemToAdd = input() ####### YOUR CODE HERE ###### #add the item to the backpack ####### YOUR CODE HERE ###### if(userChoice == "2"): print("What item do you want to check to see if it is in the backpack?") itemToCheck = input() ####### YOUR CODE HERE ###### #Print out if the user's item is in the backpack ####### YOUR CODE HERE ###### if(userChoice == "3"): sys.exit()