from tkinter import *
from PIL import ImageTk, Image
def forward(img_no):
global label
global button_forward
global button_back
global button_exit
label.grid_forget()
label = Label(image=List_images[img_no-1])
label.grid(row=1, column=0, columnspan=3)
button_for = Button(root, text="forward",
command=lambda: forward(img_no+1))
if img_no == 4:
button_forward = Button(root, text="Forward",
state=DISABLED)
button_back = Button(root, text="Back",
command=lambda: back(img_no-1))
button_back.grid(row=5, column=0)
button_exit.grid(row=5, column=1)
button_for.grid(row=5, column=2)
def back(img_no):
global label
global button_forward
global button_back
global button_exit
label.grid_forget()
label = Label(image=List_images[img_no - 1])
label.grid(row=1, column=0, columnspan=3)
button_forward = Button(root, text="forward",
command=lambda: forward(img_no + 1))
button_back = Button(root, text="Back",
command=lambda: back(img_no - 1))
print(img_no)
if img_no == 1:
button_back = Button(root, Text="Back", state=DISABLED)
label.grid(row=1, column=0, columnspan=3)
button_back.grid(row=5, column=0)
button_exit.grid(row=5, column=1)
button_for.grid(row=5, column=2)
root = Tk()
root.title("Image Viewer")
root.geometry("700x700")
image_no_1 = ImageTk.PhotoImage(Image.open("sample.jpg"))
image_no_2 = ImageTk.PhotoImage(Image.open("sample.jpg"))
image_no_3 = ImageTk.PhotoImage(Image.open("sample.jpg"))
image_no_4 = ImageTk.PhotoImage(Image.open("sample.jpg"))
List_images = [image_no_1, image_no_2, image_no_3, image_no_4]
label = Label(image=image_no_1)
label.grid(row=1, column=0, columnspan=3)
button_back = Button(root, text="Back", command=back,
state=DISABLED)
button_exit = Button(root, text="Exit",
command=root.quit)
button_forward = Button(root, text="Forward",
command=lambda: forward(1))
button_back.grid(row=5, column=0)
button_exit.grid(row=5, column=1)
button_forward.grid(row=5, column=2)
root.mainloop()
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