如何在Tkinter中通过按下下一张和上一张图片来更改两张并排图片

from tkinter import *
from PIL import ImageTk, Image

root = Tk()
root.title("Image Viewer")

def change_image(direction):
    global current_image_index, image_list, image_label

    # 根据方向更新当前图片索引
    if direction == "next":
        current_image_index += 1
    elif direction == "previous":
        current_image_index -= 1

    # 循环显示图片
    current_image_index %= len(image_list)

    # 更新图片标签的图片
    image_label.config(image=image_list[current_image_index])

# 加载图片
image1 = Image.open("image1.jpg")
image2 = Image.open("image2.jpg")

# 调整图片大小以适应窗口
image1 = image1.resize((300, 300))
image2 = image2.resize((300, 300))

# 创建图片对象
image1 = ImageTk.PhotoImage(image1)
image2 = ImageTk.PhotoImage(image2)

# 创建图片列表
image_list = [image1, image2]

# 设置初始图片索引
current_image_index = 0

# 创建图片标签
image_label = Label(root, image=image_list[current_image_index])
image_label.pack()

# 创建下一张图片按钮
next_button = Button(root, text="下一张", command=lambda: change_image("next"))
next_button.pack(side=RIGHT)

# 创建上一张图片按钮
previous_button = Button(root, text="上一张", command=lambda: change_image("previous"))
previous_button.pack(side=LEFT)

root.mainloop()

from tkinter import *
from PIL import ImageTk, Image

def change_image(direction):
    global current_image_index, image_list, image_label

    if direction == "next":
        current_image_index += 1
    elif direction == "previous":
        current_image_index -= 1

    current_image_index %= len(image_list)

    image_label.config(image=image_list[current_image_index])

root = Tk()
root.title("Image Viewer")

image1 = Image.open("image1.jpg")
image2 = Image.open("image2.jpg")

image1 = image1.resize((300, 300))
image2 = image2.resize((300, 300))

image1 = ImageTk.PhotoImage(image1)
image2 = ImageTk.PhotoImage(image2)

image_list = [image1, image2]
current_image_index = 0

image_label = Label(root, image=image_list[current_image_index])
image_label.pack()

next_button = Button(root, text="下一张", command=lambda: change_image("next"))
next_button.pack(side=RIGHT)

previous_button = Button(root, text="上一张", command=lambda: change_image("previous"))
previous_button.pack(side=LEFT)

root.mainloop()