[Python] Having some trouble subtracting a number value when removed from a listbox via a...

I've tried different combinations to try to get values to be subtracted when I order a meal and have successfully gotten the items to be removed from the listbox but have yet to get the items value to be removed from the 'total value'. This is the problem that I've encountered the multiple times I tried to get the values to be subtracted. Is anyone able to get the values to be subtracted from the total value once removed from the listbox?

import time
import tkinter as tk
from PIL import Image, ImageTk

#creates window + sizes + title
window = Tk()
window.title('Brocks Restaurant Ordering System!!!!!!')
window.geometry("1000x750")
window.minsize(1000,750)
window.maxsize(1000,750)

#arrays
final_order = []
final_order_price = []

#order/receipt sheet with value
def function(name, value):
int_list = map(float,final_order_price)

final_order.append(f'{name}')
final_order_price.append(f'{value}')
Lb.delete(0,END)

global new_price
new_price = (sum(int_list))

total_cost_label.configure(text=f'total cost is: ${new_price} ',font=("Comic Sans MS", 12))

for i in final_order:
Lb.insert(END, i)
global new_price

#main menu size and background
main_menu = Frame(window)
main_menu.configure(width=1000,height=750, bg='#0B0B3B')
main_menu.place(x=0,y=0)

#main menu restraunt image background canvas
bg = PhotoImage(file="restraunt_wname.png")
canvas1 = Canvas(main_menu, width = 1000,height = 1000)
canvas1.place(x=0,y=0)
canvas1.create_image( 500, 350, image = bg, anchor='center')

#lunch menu frame size and background
lunch_menu = Frame(window)
lunch_menu.configure(width=1000,height=750, bg='#0B0B3B')
lunch_menu.place(x=0,y=0)

#dinner menu frame size and background
dinner_menu = Frame(window)
dinner_menu.configure(width=1000,height=750, bg='#0B0B3B')
dinner_menu.place(x=0,y=0)

#drinks menu frame size and background
drinks_menu = Frame(window)
drinks_menu.configure(width=1000,height=750, bg='#0B0B3B')
drinks_menu.place(x=0,y=0)

#specials menu frame size and background
specials_menu = Frame(window)
specials_menu.configure(width=1000,height=750, bg='#0B0B3B')
specials_menu.place(x=0,y=0)

#desserts menu frame size and background
desserts_menu = Frame(window)
desserts_menu.configure(width=1000,height=750, bg='#0B0B3B')
desserts_menu.place(x=0,y=0)

#breakfast menu frame size and background
breakfast_menu = Frame(window)
breakfast_menu.configure(width=1000,height=750, bg='#0B0B3B')
breakfast_menu.place(x=0,y=0)

#display frame (receipt) size and background
display_frame = Frame(window)
display_frame.configure(width=1000,height=750, bg='#0B0B3B')
display_frame.place(x=0,y=0)

#live clock (updates every 1 second)
def update_time():
live_time = time.strftime('%I:%M:%S%p')
time_label.config(text=live_time)
window.after(1000, update_time)

time_label = Label(main_menu, font=("Comic Sans MS", 50),bg="black",fg='white')
time_label.place(x=370,y=670)
update_time()

#when menu is clicked (opened) below messages come up in terminal
def dinner():
print('dinner menu opened!')
dinner_menu.tkraise()

def lunch():
print('lunch menu opened!')
lunch_menu.tkraise()

def drinks():
print('drinks menu opened!')
drinks_menu.tkraise()

def specials():
print('drinks menu opened!')
specials_menu.tkraise()

def deserts():
print('deserts menu opened!')
desserts_menu.tkraise()

def breakfast():
print('breakfast menu opened!')
breakfast_menu.tkraise()

#dinner menu button
dinner_menu_button = Button(
main_menu,
text="Dinner",
width=25,
height=7,
fg="black",
bg="#f9fbff",
highlightbackground='gray',
command=lambda: (dinner_menu.tkraise(),dinner() )
)
dinner_menu_button.place(x=0,y=120)

#lunch menu button
lunch_menu_button = Button(
main_menu,
text="Lunch",
width=25,
height=7,
fg="black",
bg="#f9fbff",
highlightbackground='gray',
command=lambda: (lunch_menu.tkraise(),lunch() )
)
lunch_menu_button.place(x=0,y=240)

#drinks menu button
drinks_menu_button = Button(
main_menu,
text="Drinks",
width=25,
height=7,
fg="black",
bg="#f9fbff",
highlightbackground='gray',
command=lambda: (drinks_menu.tkraise(),drinks() )
)
drinks_menu_button.place(x=0,y=600)

#specials menu button
specials_menu_button = Button(
main_menu,
text="Specials",
width=25,
height=7,
fg="black",
bg="#f9fbff",
highlightbackground='gray',
command=lambda: (specials_menu.tkraise(),specials() )
)
specials_menu_button.place(x=0,y=0)

#desserts menu button
desserts_menu_button = Button(
main_menu,
text="Desserts",
width=25,
height=7,
fg="black",
bg="#f9fbff",
highlightbackground='gray',
command=lambda: (desserts_menu.tkraise(),deserts() )
)
desserts_menu_button.place(x=0,y=480)

#breakfast menu button
breakfast_menu_button = Button(
main_menu,
text="Breakfast",
width=25,
height=7,
fg="black",
bg='#f9fbff',
highlightbackground='gray',
command=lambda: (breakfast_menu.tkraise(),breakfast() )
)
breakfast_menu_button.place(x=0,y=360)

#receipt menu button
receipt_menu_button = Button(
main_menu,
text="Open Receipt",
width=10,
height=7,
fg="black",
bg='#f9fbff',
highlightbackground='gray',
command=lambda: (display_frame.tkraise())
)
receipt_menu_button.place(x=900,y=630)

#back buttons for each window/frame
#breakfast menu back button (BM)
back_button_BM = Button(breakfast_menu,text='X',background='red',fg='white',width=10,height=5,highlightbackground='red',command=lambda: main_menu.tkraise())
back_button_BM.place(x=900, y=0)

#specials menu back button (SM)
back_button_SM = Button(specials_menu,text='X',background='red',fg='white',width=10,height=5,highlightbackground='red',command=lambda: main_menu.tkraise())
back_button_SM.place(x=900, y=0)

#lunch menu back button (LM)
back_button_LM = Button(lunch_menu,text='X',background='red',fg='white',width=10,height=5,highlightbackground='red',command=lambda: main_menu.tkraise())
back_button_LM.place(x=900, y=0)

#dinner menu back button (DM)
back_button_DM = Button(dinner_menu,text='X',background='red',fg='white',width=10,height=5,highlightbackground='red',command=lambda: main_menu.tkraise())
back_button_DM.place(x=900, y=0)

#drinks menu back button (DRM)
back_button_DRM = Button(drinks_menu,text='X',background='red',fg='white',width=10,height=5,highlightbackground='red',command=lambda: main_menu.tkraise())
back_button_DRM.place(x=900, y=0)

#desserts menu back button (DSM)
back_button_DSM = Button(desserts_menu,text='X',background='red',fg='white',width=10,height=5,highlightbackground='red',command=lambda: main_menu.tkraise())
back_button_DSM.place(x=900, y=0)

#display frame back button (DF)
back_button_DF = Button(display_frame,text='X',background='red',fg='white',width=10,height=5,highlightbackground='red',command=lambda: main_menu.tkraise())
back_button_DF.place(x=900, y=0)

#meal buttons and menu labels, along with array stuff
lunch_label = Label(lunch_menu)
lunch_button_PAS = Button(lunch_menu, text='Pasta Salad $10', width=20, height=5, command=lambda: function('Pasta Salad',10))
lunch_button_PAS.place(x=220,y=500)
lunch_button_HP = Button(lunch_menu, text='Hawaiian Pizza $22.50', width=20, height=5, command=lambda: function('Hawaiian Pizza',22.50))
lunch_button_HP.place(x=640,y=500)
lunch_label.place(x=0,y=0)

dinner_label = Label(dinner_menu)
dinner_button_TB = Button(dinner_menu, text='T-Bone Steak $40', width=20, height=5, command=lambda: function('T-Bone Steak',40))
dinner_button_TB.place(x=220,y=500)
dinner_button_CP = Button(dinner_menu, text='Chicken Parmi $25', width=20, height=5, command=lambda: function('Chicken Parmi',25))
dinner_button_CP.place(x=640,y=500)
dinner_label.place(x=0,y=0)

drinks_label = Label(drinks_menu)
drinks_button_BE = Button(drinks_menu, text='Beer $4', width=20, height=5, command=lambda: function('Beer',4))
drinks_button_BE.place(x=220,y=500)
drinks_button_HL = Button(drinks_menu, text='Homemade Lemonade $3.50', width=20, height=5, command=lambda: function('Homemade Lemonade',3.50))
drinks_button_HL.place(x=640,y=500)
drinks_label.place(x=0,y=0)

specials_label = Label(specials_menu)
specials_button_PS = Button(specials_menu, text='Pumpkin Soup $15', width=20, height=5, command=lambda: function('Pumpkin Soup',15))
specials_button_PS.place(x=220,y=500)
specials_button_PR = Button(specials_menu, text='Pulled Pork Roll $13.50', width=20, height=5,command=lambda: function('Pulled Pork Roll',13.50))
specials_button_PR.place(x=640,y=500)
specials_label.place(x=0,y=0)

desserts_label = Label(desserts_menu)
desserts_button_BS = Button(desserts_menu, text='Banana Split $8', width=20, height=5, command=lambda: function('Banana Split',8))
desserts_button_BS.place(x=220,y=500)
desserts_button_IS = Button(desserts_menu, text='Ice Cream sundae $5.50', width=20, height=5, command=lambda: function('Ice Cream Sundae',5.50))
desserts_button_IS.place(x=640,y=500)
desserts_label.place(x=0,y=0)

breakfast_label = Label(breakfast_menu)
breakfast_button_ER = Button(breakfast_menu, text='Egg & Bacon Roll $9.50', width=20, height=5, command=lambda: function('Egg & Bacon Roll',9.50))
breakfast_button_ER.place(x=220,y=500)
breakfast_button_HB = Button(breakfast_menu, text='Hashbrown Bowl $12', width=20, height=5, command=lambda: function('Hashbrown Bowl',12))
breakfast_button_HB.place(x=640,y=500)
breakfast_label.place(x=0,y=0)

#total cost label
total_cost_label = Label(display_frame, text=final_order_price)
total_cost_label.place(x=460,y=665)

#listbox function and placement
Lb = Listbox(display_frame, height=30, width=50, selectmode=SINGLE)
Lb.place(x=385, y=150)

#remove button
def remove_item():
selected_checkboxs = Lb.curselection()
for selected_checkbox in selected_checkboxs[::-1]:
Lb.delete(selected_checkbox)
for item in final_order:
Lb.insert(END, item)

#remove button frame
remove_btn = Button(display_frame,text='remove item', command=remove_item, height=1, width=20, font=("Comic Sans MS", 12))
remove_btn.place(x=435, y=700)

#breakfast menu image 1 : egg roll (ER)
ER_frame = Frame(breakfast_menu, width=300, height=250)
ER_frame.place(x=160, y=200)
ER_image_path = "egg_roll.png"
ER_image = Image.open(ER_image_path)
ER_image = ER_image.resize((300, 250), Image.Resampling.LANCZOS)
ER_photo_image = ImageTk.PhotoImage(ER_image)
ER_image_label = Label(ER_frame, image=ER_photo_image)
ER_image_label.place(x=0,y=0)

#breakfast menu image 2 : hashbrown bowl (HB)
HB_frame = Frame(breakfast_menu, width=300, height=250)
HB_frame.place(x=555, y=200)
HB_image_path = "hashbrown_bowl.png"
HB_image = Image.open(HB_image_path)
HB_image = HB_image.resize((300, 250), Image.Resampling.LANCZOS)
HB_photo_image = ImageTk.PhotoImage(HB_image)
HB_image_label = Label(HB_frame, image=HB_photo_image)
HB_image_label.place(x=0,y=0)

#lunch menu image 1 : pasta salad (PAS)
PAS_frame = Frame(lunch_menu, width=300, height=250)
PAS_frame.place(x=160, y=200)
PAS_image_path = "pasta_salad.png"
PAS_image = Image.open(PAS_image_path)
PAS_image = PAS_image.resize((300, 250), Image.Resampling.LANCZOS)
PAS_photo_image = ImageTk.PhotoImage(PAS_image)
PAS_image_label = Label(PAS_frame, image=PAS_photo_image)
PAS_image_label.place(x=0,y=0)

#lunch menu image 2 : hawaiian pizza (HP)
HP_frame = Frame(lunch_menu, width=300, height=250)
HP_frame.place(x=555, y=200)
HP_image_path = "hawaiian_pizza.png"
HP_image = Image.open(HP_image_path)
HP_image = HP_image.resize((300, 250), Image.Resampling.LANCZOS)
HP_photo_image = ImageTk.PhotoImage(HP_image)
HP_image_label = Label(HP_frame, image=HP_photo_image)
HP_image_label.place(x=0,y=0)

#desert menu image 1 : banana split (BS)
BS_frame = Frame(desserts_menu, width=300, height=250)
BS_frame.place(x=160, y=200)
BS_image_path = "banana_split.png"
BS_image = Image.open(BS_image_path)
BS_image = BS_image.resize((300, 250), Image.Resampling.LANCZOS)
BS_photo_image = ImageTk.PhotoImage(BS_image)
BS_image_label = Label(BS_frame, image=BS_photo_image)
BS_image_label.place(x=0,y=0)

#desert menu image 2 : ice cream sundae (IS)
IS_frame = Frame(desserts_menu, width=300, height=250)
IS_frame.place(x=555, y=200)
IS_image_path = "ice_cream_sundae.png"
IS_image = Image.open(IS_image_path)
IS_image = IS_image.resize((300, 250), Image.Resampling.LANCZOS)
IS_photo_image = ImageTk.PhotoImage(IS_image)
IS_image_label = Label(IS_frame, image=IS_photo_image)
IS_image_label.place(x=0,y=0)

#specials menu image 1 : pumpkin soup (PS)
PS_frame = Frame(specials_menu, width=300, height=250)
PS_frame.place(x=160, y=200)
PS_image_path = "pumpkin_soup_sale.png"
PS_image = Image.open(PS_image_path)
PS_image = PS_image.resize((300, 250), Image.Resampling.LANCZOS)
PS_photo_image = ImageTk.PhotoImage(PS_image)
PS_image_label = Label(PS_frame, image=PS_photo_image)
PS_image_label.place(x=0,y=0)

#specials menu image 2 : pulled pork roll (PR)
PR_frame = Frame(specials_menu, width=300, height=250)
PR_frame.place(x=555, y=200)
PR_image_path = "pulled_pork_roll_returning.png"
PR_image = Image.open(PR_image_path)
PR_image = PR_image.resize((300, 260), Image.Resampling.LANCZOS)
PR_photo_image = ImageTk.PhotoImage(PR_image)
PR_image_label = Label(PR_frame, image=PR_photo_image)
PR_image_label.place(x=0,y=0)

#dinner menu image 1 : t-bone steak (TB)
TB_frame = Frame(dinner_menu, width=300, height=250)
TB_frame.place(x=160, y=200)
TB_image_path = "t-bone_steak.png"
TB_image = Image.open(TB_image_path)
TB_image = TB_image.resize((300, 250), Image.Resampling.LANCZOS)
TB_photo_image = ImageTk.PhotoImage(TB_image)
TB_image_label = Label(TB_frame, image=TB_photo_image)
TB_image_label.place(x=0,y=0)

#dinner menu image 2 : chicken parmi (CP)
CP_frame = Frame(dinner_menu, width=300, height=250)
CP_frame.place(x=555, y=200)
CP_image_path = "chicken_parmi.png"
CP_image = Image.open(CP_image_path)
CP_image = CP_image.resize((300, 250), Image.Resampling.LANCZOS)
CP_photo_image = ImageTk.PhotoImage(CP_image)
CP_image_label = Label(CP_frame, image=CP_photo_image)
CP_image_label.place(x=0,y=0)

#drinks menu image 1 : beer (BE)
BE_frame = Frame(drinks_menu, width=300, height=250)
BE_frame.place(x=160, y=200)
BE_image_path = "beer.png"
BE_image = Image.open(BE_image_path)
BE_image = BE_image.resize((300, 250), Image.Resampling.LANCZOS)
BE_photo_image = ImageTk.PhotoImage(BE_image)
BE_image_label = Label(BE_frame, image=BE_photo_image)
BE_image_label.place(x=0,y=0)

#drinks menu image 2 : homemade lemonade (HL)
HL_frame = Frame(drinks_menu, width=300, height=250)
HL_frame.place(x=555, y=200)
HL_image_path = "homemade_lemonade.png"
HL_image = Image.open(HL_image_path)
HL_image = HL_image.resize((300, 250), Image.Resampling.LANCZOS)
HL_photo_image = ImageTk.PhotoImage(HL_image)
HL_image_label = Label(HL_frame, image=HL_photo_image)
HL_image_label.place(x=0,y=0)

#loops
main_menu.tkraise()
window.resizable(False, False)
window.mainloop()





#to do list
#----------------------------
#minus price from total when item is removed from listbox (below)
#total var = totalvar - finalorderlist[ffoodlist.index(item)]
#food list = final_order```

Continue reading...