{
    "name": "burrito",
    "calories": 500,
    "price": 12.90,
    "is_vegetarian": "yes",
    "spicy_level": 2
}

restaurant_menu_list = [
  {
    "name": "burrito",
    "calories": 500,
    "price": 12.90,
    "is_vegetarian": "yes",
    "spicy_level": 2
  },
  {
    "name": "rice bowl",
    "calories": 400,
    "price": 14.90,
    "is_vegetarian": "no",
    "spicy_level": 3
  },
  {
    "name": "margherita",
    "calories": 800,
    "price": 18.90,
    "is_vegetarian": "no",
    "spicy_level": 2
  }
]

    list_menu = {
        "A": "complete menu",
        "V": "vegetarian dishes only",
    }

    spicy_scale_map = {
        1: "Not spicy",
        2: "Low key spicy",
        3: "Hot",
        4: "Diabolical",
    }

    elif opt == 'L':
        list_helper(list_menu, restaurant_menu_list, spicy_scale_map)

def list_helper(list_menu, restaurant_menu_list, spicy_scale_map):
    if len(restaurant_menu_list) == 0:
        print("WARNING: There is nothing to display!")
        # Pause before going back to the main menu
        input("::: Press Enter to continue")
    else:
        subopt = get_selection("List", list_menu)
        if subopt == 'A':
            print_restaurant_menu(restaurant_menu_list, spicy_scale_map, show_idx=True, start_idx=1)
        elif subopt == 'V':
            print_restaurant_menu(restaurant_menu_list, spicy_scale_map, show_idx=True, start_idx=1, vegetarian_only=True)

######## LIST OPTION ########

def get_selection(action, suboptions, to_upper=True, go_back=False):
    """
    param: action (string) - the action that the user
            would like to perform; printed as part of
            the function prompt
    param: suboptions (dictionary) - contains suboptions
            that are listed underneath the function prompt.
    param: to_upper (Boolean) - by default, set to True, so
            the user selection is converted to upper-case.
            If set to False, then the user input is used
            as-is.
    param: go_back (Boolean) - by default, set to False.
            If set to True, then allows the user to select the
            option M to return back to the main menu
    The function displays a submenu for the user to choose from.
    Asks the user to select an option using the input() function.
    Re-prints the submenu if an invalid option is given.
    Prints the confirmation of the selection by retrieving the
    description of the option from the suboptions dictionary.
    returns: the option selection (by default, an upper-case string).
            The selection be a valid key in the suboptions
            or a letter M, if go_back is True.
    """
    selection = None
    if go_back:
        if 'm' in suboptions or 'M' in suboptions:
            print("Invalid submenu, which contains M as a key.")
            return None
    while selection not in suboptions:
        print(f"::: What field would you like to {action.lower()}?")
        for key in suboptions:
            print(f"{key} - {suboptions[key]}")
        if go_back:
            selection = input(f"::: Enter your selection "
                              f"or press 'm' to return to the main menu\n> ")
        else:
            selection = input("::: Enter your selection\n> ")
        if to_upper:
            selection = selection.upper()  # to allow us to input lower- or upper-case letters
        if go_back and selection.upper() == 'M':
            return 'M'

    print(f"You selected |{selection}| to",
          f"{action.lower()} |{suboptions[selection]}|.")
    return selection

def print_restaurant_menu(restaurant_menu, spicy_scale_map, name_only=False, show_idx=True, start_idx=0, vegetarian_only=False):
    """
    param: restaurant_menu (list) - a list object that holds the dictionaries for each dish
    param: spicy_scale_map (dict) - a dictionary object that is expected
            to have the integer keys that correspond to the "level of spiciness."
    param: name_only (Boolean)
            If False, then only the name of the dish is printed.
            Otherwise, displays the formatted dish information.
    param: show_idx (Boolean)
            If False, then the index of the menu is not displayed.
            Otherwise, displays the "{idx + start_idx}." before the
            dish name, where idx is the 0-based index in the list.
    param: start_idx (int)
            an expected starting value for idx that
            gets displayed for the first dish, if show_idx is True.
    param:  vegetarian_only (Boolean)
            If set to False, prints all dishes, regardless of their
            is_vegetarian status ("yes/no" field status).
             If set to True , display only the dishes with
            "is_vegetarian" status set to "yes".
    returns: None; only prints the restaurant menu
    """
   # Go through the dishes in the restaurant menu:
    for ...: 
        # if vegetarian_only is True and the dish is not vegetarian, skip
        if vegetarian_only and ...:
            ..... 

        # if the index of the task needs to be displayed (show_idx is True), print dish index only
        if show_idx == True:  
            print(.....)

        # print the name of the dish

        # if name_only is False
        if not name_only:
            print(.....)
            print(.....)
            print(.....)
            print(.....)
    """