用python做一个压缩图片的小程序

学生正在学习图像的编码与压缩，记录一下这个python小程序，给他们提供一下帮助。需要用到PIL库，记得安装：

pip install pillow

import tkinter as tk
from tkinter import filedialog 
from PIL import Image
import tkinter.messagebox as messagebox
 
class ImageCompressor:
    def __init__(self, window):
        self.window = window
        self.window.title("图片压缩工具By ZYX 2023")
 
        self.source_path = tk.StringVar()
        self.output_path = tk.StringVar()
 
        frame1 = tk.Frame(window)
        frame1.pack(padx=5, pady=5)
 
        lbl_source = tk.Label(frame1, text="原始图片路径:")
        lbl_source.pack(side=tk.LEFT)
 
        entry_source = tk.Entry(frame1,textvariable=self.source_path, width=40)
        entry_source.pack(side=tk.LEFT)
 
        btn_source =tk.Button(frame1, text="打开", command=self.open_source_image)
        btn_source.pack(side=tk.LEFT)
 
        frame2 = tk.Frame(window)
        frame2.pack(padx=5, pady=5)
 
        lbl_output = tk.Label(frame2, text="输出图片路径:")
        lbl_output.pack(side=tk.LEFT)
 
        entry_output = tk.Entry(frame2,textvariable=self.output_path, width=40)
        entry_output.pack(side=tk.LEFT)
 
        btn_output =tk.Button(frame2, text="保存", command=self.save_output_image)
        btn_output.pack(side=tk.LEFT)
 
        quality_label = tk.Label(window, text='质量（1-95）:')
        quality_label.pack(pady=5)
 
        self.quality_slider = tk.Scale(window, from_=1, to=95,
            length=400,tickinterval=19,
            orient='horizontal', resolution=1)
        self.quality_slider.set(80)
        self.quality_slider.pack()
 
        btn_compress =tk.Button(window, text="开始压缩", command=self.compress_image)
        btn_compress.pack(pady=10)
 
    def open_source_image(self):
        file_path = filedialog.askopenfilename()
        self.source_path.set(file_path)
 
    def save_output_image(self):
        file_path = filedialog.asksaveasfilename(defaultextension=".jpg")
        self.output_path.set(file_path)
 
    def compress_image(self):
        try:
            img = Image.open(self.source_path.get())
            img.save(self.output_path.get(), "JPEG", quality=self.quality_slider.get())
            messagebox.showinfo("成功", "图片压缩成功!")
        except Exception as e:
            messagebox.showerror("失败", f"压缩过程中发生错误：{e}")
 
if __name__ == '__main__':
    window = tk.Tk()
    app = ImageCompressor(window)
    window.mainloop()