Unpack all the frames from an animated gif

If you want to get all the frames out of an animated gif image, you can use this script. I get the code to “unpack” the gif file from stackoverflow. I just added the save_all_frames function. The unpack_gif function, pastes the uncomplete frames (that has just the changes from the previous frame and that has the disposal == 2) on the previous frame, so that all the frames can be converted in png in their complete form.

import tkinter as tk
from PIL import Image, ImageTk
from PIL import Image, ImageSequence
import os


def unpack_gif(src):
    "If disposal == 2 (unclomplete) it copies it on the previous"
    image = Image.open(src)
    frames = []
    disposal = []
    for gifFrame in ImageSequence.Iterator(image):
        disposal.append(gifFrame.disposal_method)
        frames.append(gifFrame.convert('P'))
    output = []
    lastFrame = None
    thisFrame = None
    for i, loadedFrame in enumerate(frames):
        thisFrame = loadedFrame
        if disposal[i] == 2:
            if i != 0:
                lastFrame.paste(thisFrame, mask=thisFrame.convert('RGBA'))
                output.append(lastFrame)
            else:
                output.append(thisFrame)
        elif disposal[i] == 1 or disposal[i] == 0:
            output.append(thisFrame)
        else:
            raise ValueError('Disposal Methods other than 2:Restore to Background,\
             1:Do Not Dispose, and 0:No Disposal are supported at this time')
        lastFrame = loadedFrame
    return output


def save_all_frames(file):
    "Saves all the frames of the gif as numbered png files"
    name = os.path.splitext(file)[0]
    im = unpack_gif(file)
    for n, i in enumerate(im):
        if n<10:
            zero = "0"
        else:
            zero = ""
        i.save(f"{name}{zero}{n}.png")
    print(im)

save_all_frames("tenor.gif")