Image Insertion.py

from tkinter import *
from PIL import ImageTk, Image

root = Tk()

root.title("Image Insertion")
root.iconbitmap("image.ico")

my_image1 = ImageTk.PhotoImage(Image.open("facebook.png"))
my_image2 = ImageTk.PhotoImage(Image.open("messenger.png"))
my_image3 = ImageTk.PhotoImage(Image.open("twitter.png"))
my_image4 = ImageTk.PhotoImage(Image.open("youtube.png"))
my_image5 = ImageTk.PhotoImage(Image.open("google.png"))

image_list = [my_image1, my_image2, my_image3, my_image4, my_image5]


my_label = Label(image=my_image1)
my_label.grid(row=0, column=0, columnspan=3)

def forward(image_number):
    global my_label
    global button_forward
    global button_back

    my_label.grid_forget()
    my_label = Label(image=image_list[image_number-1])
    button_forward = Button(root, text=">>", command=lambda: forward(image_number+1))
    button_back = Button(root, text="<<", command=lambda: back(image_number-1))

    if image_number == 5:
        button_forward = Button(root, text=">>", state=DISABLED)

    my_label.grid(row=0, column=0, columnspan=3)
    button_back.grid(row=1, column=0)
    button_forward.grid(row=1, column=2)

    if image_number == 5:
        button_forward = Button(root, text=">>", state=DISABLED)


def back(image_number):
    global my_label
    global button_forward
    global button_back

    my_label.grid_forget()
    my_label = Label(image=image_list[image_number -1])
    button_forward = Button(root, text=">>", command=lambda: forward(image_number+1))
    button_back = Button(root, text="<<", command=lambda: back(image_number-1))

    if image_number == 1:
        button_back = Button(root, text="<<", state=DISABLED)

    my_label.grid(row=0, column=0, columnspan=3)
    button_back.grid(row=1, column=0)
    button_forward.grid(row=1, column=2)




button_back = Button(root, text="<<", command=lambda: back, state=DISABLED)
button_back.grid(row=1, column=0)

button_exit = Button(root, text="Exit", command=root.quit)
button_exit.grid(row=1, column=1, )

button_forward = Button(root, text=">>", command=lambda: forward(2))
button_forward.grid(row=1,column=2)

root.mainloop()