python使用tkinter添加下载进度UI

1. 添加进度组件

   def download():          
               # 创建下载进度框
               progress_window = tk.Toplevel()
               progress_window.title("下载进度")
               progress_label = tk.Label(progress_window, text="正在下载视频文件...")
               progress_label.pack(pady=10)
               progress_bar = ttk.Progressbar(progress_window, orient="horizontal", length=300, mode="determinate")
               progress_bar.pack(pady=10)
   
               # 获取窗口宽高并居中显示
               progress_window.update_idletasks()
               window_width = progress_window.winfo_width()
               window_height = progress_window.winfo_height()
               screen_width = progress_window.winfo_screenwidth()
               screen_height = progress_window.winfo_screenheight()
               x = (screen_width - window_width) // 2
               y = (screen_height - window_height) // 2
               progress_window.geomet