如何使tkinter幻灯片缩放图像适合屏幕?

我正在尝试使用Tkinter做一个图像幻灯片放映，但我遇到了一个问题，任何图像不一样的本机分辨率我的显示器(或更少)将被切断。 我现在的代码:

import tkinter as tk
from itertools import cycle
from PIL import ImageTk, Image
import random


with open('list.txt', 'r') as f: #sparces the list file into something the code can understand
    lines = f.read().strip('[]')
    images = [i.strip("\" ") for i in lines.split(',')]

var1 = input("random?")
if var1 == "yes" or var1 == "Yes":
    #runs the randomized version of the code
    random.shuffle(images)

    photos = cycle(ImageTk.PhotoImage(Image.open(image)) for image in images)

    def slideShow():
        img = next(photos)
        displayCanvas.config(image=img)
        root.after(1200, slideShow) 

    root = tk.Tk()
    root.overrideredirect(True)
    width = root.winfo_screenwidth()
    height = root.winfo_screenwidth()
    root.geometry('%dx%d' % (1920, 1080))
    displayCanvas = tk.Label(root)
    displayCanvas.pack()
    root.after(1000, lambda: slideShow())
    root.mainloop()
elif var1 == "no" or var1 == "No":
    #runs the alphabetical version of the code

    photos = cycle(ImageTk.PhotoImage(Image.open(image)) for image in images)

    def slideShow():
        img = next(photos)
        displayCanvas.config(image=img)
        root.after(1200, slideShow) 

    root = tk.Tk()
    root.overrideredirect(True)
    width = root.winfo_screenwidth()
    height = root.winfo_screenwidth()
    root.geometry('%dx%d' % (1920, 1080))
    displayCanvas = tk.Label(root)
    displayCanvas.pack()
    root.after(1000, lambda: slideShow())
    root.mainloop()
else:
    print("you gotta answer with yes,Yes,no,No,")
    exit

我如何使它的图像缩放到适当的显示在屏幕上? 问题来源StackOverflow 地址：/questions/59383540/how-to-make-tkinter-slideshow-scale-images-to-fit-on-screen