double_click_5.py

from tkinter import *


def go(event):
    cs = Lb.curselection()

    # Updating label text to selected option
    w.config(text=Lb.get(Lb.curselection()))

    # Setting Background Colour
    for list in cs:

        if list == 0:
            top.configure(background='red')
        elif list == 1:
            top.configure(background='green')
        elif list == 2:
            top.configure(background='yellow')
        elif list == 3:
            top.configure(background='white')


top = Tk()
top.geometry('250x275')
top.title('Double Click')

# Creating Listbox
Lb = Listbox(top, height=6)
# Inserting items in Listbox
Lb.insert(0, 'Red')
Lb.insert(1, 'Green')
Lb.insert(2, 'Yellow')
Lb.insert(3, 'White')

# Binding double click with left mouse
# button with go function
Lb.bind('<Double-1>', go)
Lb.pack()

# Creating Edit box to show selected option
w = Label(top, text='Default')
w.pack()
top.mainloop()