Python3 tkinter radiobutton problem

[BashBedlam]

I've modified your code so that select_food () re-configures label_print_food instead of recreating it each time. That takes care of the second problem. I inserted food_name_var.set ("Bread") after food_name_var = StringVar() and that should turn all of the buttons white like you wanted. Here's the altered code :

from tkinter import *
 
root = Tk()
root.title("Super Market")
root.geometry("1500x1300")
 
food = [
        ("Rice" , 0.99) ,                       # value for radio_button -> 1
        ("Spaghetti" , 0.95) ,                  # value for radio_button -> 2
        ("Ice cream" , 3.44) ,                  # value for radio_button -> 3
        ("Pizza" , 7.50) ,                      # value for radio_button -> 4
        ("Cheese" , 2.10) ,                     # value for radio_button -> 5
        ("Cheddar" , 0.45) ,                    # value for radio_button -> 6
        ("Cherry" , 0.88) ,                     # value for radio_button -> 7
        ("Banana" , 0.40) ,                     # value for radio_button -> 8
        ("Apple" , 0.67) ,                      # value for radio_button -> 9
        ("Meat" , 7.28) ,                       # value for radio_button -> 10
        ("Fish" , 9.72) ,                       # value for radio_button -> 11
        ("Orange" , 0.62) ,                     # value for radio_button -> 12
        ("Orange juice" , 2.10) ,               # value for radio_button -> 13
        ("Chocolate" , 0.99) ,                  # value for radio_button -> 14
        ("Bread" , 0.55)                        # value for radio_button -> 15
       ]
 
 
food_name_var = StringVar()
food_name_var.set ("Bread")
frame = LabelFrame(root , relief = SUNKEN , bd = 1)
frame.grid(row = 0 , column = 0 , sticky = W)
 
r = 0
for food_name , food_price in food:
        Radiobutton(frame , text = food_name , variable = food_name_var , value = r+1 , padx = 10 , pady = 5).grid(row = r , column = 0 , sticky = W)
        label_price = LabelFrame(root , relief = SUNKEN , bd = 1 , text = "Price")
        label_price.grid(row = r , column = 1 , sticky = W)
        r += 1
 
def select_food(food_name):
        label_print_food.configure (text = food_name)
 

button = Button(root , text = "Basket" , command = lambda: select_food(food[ int(food_name_var.get() ) - 1][0]) )
button.grid(row = 0 , column = 3)
label_print_food = Label(root , text = '')
label_print_food.grid(row = 0 , column = 4)
 
root.mainloop()