Creating a multiple Selection using Tkinter

# Python program demonstrating
# Multiple selection in Listbox widget


from tkinter import * 

window = Tk()
window.geometry('100x150')

# Choosing selectmode as multiple 
# for selecting multiple options
list = Listbox(window, selectmode = "multiple")

# Widget expands horizontally and
# vertically by assigning both to 
# fill option
list.pack(expand = YES, fill = "both")

# Taking a list 'x' with the items 
# as languages
x = ["C", "C++", "Java", "Python", "R",
     "Go", "Ruby", "JavaScript", "Swift"]

for each_item in range(len(x)):
    
    list.insert(END, x[each_item])
    
    # coloring alternative lines of listbox
    list.itemconfig(each_item,
             bg = "yellow" if each_item % 2 == 0 else "cyan")
    
window.mainloop()

# Python program demonstrating Multiple selection
# in Listbox widget with a scrollbar


from tkinter import *

window = Tk()
window.title('Multiple selection')

# for scrolling vertically
yscrollbar = Scrollbar(window)
yscrollbar.pack(side = RIGHT, fill = Y)

label = Label(window,
              text = "Select the languages below :  ",
              font = ("Times New Roman", 10), 
              padx = 10, pady = 10)
label.pack()
list = Listbox(window, selectmode = "multiple", 
               yscrollcommand = yscrollbar.set)

# Widget expands horizontally and 
# vertically by assigning both to
# fill option
list.pack(padx = 10, pady = 10,
          expand = YES, fill = "both")

x =["C", "C++", "C#", "Java", "Python",
    "R", "Go", "Ruby", "JavaScript", "Swift",
    "SQL", "Perl", "XML"]

for each_item in range(len(x)):
    
    list.insert(END, x[each_item])
    list.itemconfig(each_item, bg = "lime")

# Attach listbox to vertical scrollbar
yscrollbar.config(command = list.yview)
window.mainloop()