try: root = tk.Tk() root.withdraw() f_path = filedialog.askopenfilename() if not f_path: messagebox.showinfo('提示', '请选取有效图片') img = cv.imread(f_path) pre_pts = -1, -1 cv.namedWindow('picture', cv.WINDOW_NORMAL) cv.resizeWindow('picture', 256, 256) cv.moveWindow('picture', 600, 300) cv.imshow('picture', img) cv.setMouseCallback('picture', draw) cv.waitKey(0) cv.destroyAllWindows() except Exception as e: print("出现错误:", e) 上述代码怎么改才会使得选取本地文件界面关掉后picture窗口不再出现

你可以在选取本地文件后，加上`root.destroy()`语句，使得Tkinter窗口关闭，从而不会再打开picture窗口。修改后的代码如下：

try:         
    root = tk.Tk()         
    root.withdraw()         
    f_path = filedialog.askopenfilename()         
    if not f_path:             
        messagebox.showinfo('提示', '请选取有效图片')          
    else:         
        img = cv.imread(f_path)         
        pre_pts = -1, -1         
        cv.namedWindow('picture', cv.WINDOW_NORMAL)         
        cv.resizeWindow('picture', 256, 256)         
        cv.moveWindow('picture', 600, 300)         
        cv.imshow('picture', img)         
        cv.setMouseCallback('picture', draw)         
        cv.waitKey(0)         
        cv.destroyAllWindows()         
    root.destroy() 
except Exception as e:         
    print("出现错误:", e)