如何解决Tkinter python：有没有办法在关闭窗口后保存checkbutton变量的状态？？

我是 tkinter 的新手，我正在尝试做以下事情：

• 打开文件对话窗口以选择文本文件。 （完成）
• 处理文件的信息。 （完成）
• 在 tkinter 窗口中显示文件的一些信息。 （完成）
• 用户从前一个 tkinter 窗口中选择一些复选框，然后关闭该窗口，稍后在代码中使用来自复选框的信息。 （不工作）

这是我的代码，可能不是管理 tkinter 内容的最佳方式。

# Import tkinter for file/directory dialogs.
from tkinter import *

# DeFinition of the structure of file''s regions
# Just want to keep titles and subtitles in this part.
class SectionHeaders:
    def __init__(self,title,subtitles = []):
        self.title = title
        self.subtitles = subtitles

class CheckBoxesMap():
    # fileSections is a list of SectionHeaders objects.
    def __init__(self,parent=None,fileSections=[]):
        # List of variables for each checkBox.
        self.vars = []
        # Helper variable
        r = 0
        for fileSection in fileSections:
            # Variable and checkBox for the title.
            var = Intvar()
            chk = Checkbutton(parent,text=fileSection.title,variable=var)
            chk.grid(row = r,column = 0,sticky = W)
            self.vars.append(var)
            r+=1
            for subtitle in fileSection.subtitles:
                var = Intvar()
                chk = Checkbutton(parent,text=subtitle,variable=var)
                chk.grid(row = r,column = 1,sticky = W)
                self.vars.append(var)
                r+=1

    def get_states(self):
        return map((lambda var: var.get()),self.vars)

# Function to run at the second tkinter window closing.
def closing_action(something,tkinstance=None):
    if tkinstance != None:
        tkinstance.destroy()
    if isinstance(something,CheckBoxesMap):
        print(list(something.get_states()))

def main():
    # Creating instance of Tk,initializing tcl/tk interpreter.
    # We need to create this Tk instance and withdraw it in order to
    # initialize the interpreter.
    root = Tk()
    # Avoiding to keep the Tk window open,withdraw hides it.
    root.withdraw()

    ##### Some processing of the file content #####
    ## titles variable referenced below is a list
    ## of SectionHeaders objects.
    ## Added as part of EDIT 1.
    titles = []
    titles.append(SectionHeaders(''Title 1'',[]))
    titles.append(SectionHeaders(''Title 2'',[''Subtitle 2.1'',''Subtitle 2.2'']))
    titles.append(SectionHeaders(''Title 3'',[''Subtitle 3.1'']))

    # Creating a selection tool with the titles listed.
    title_window = Tk()
    tk_titles = CheckBoxesMap(title_window,titles)

    # The following three commands are needed so the window pops
    # up on top on Windows...
    title_window.iconify()
    title_window.update()
    title_window.deiconify()

    title_window.protocol("WM_DELETE_WINDOW",closing_action(tk_titles,root))
    title_window.mainloop()

    # Obtaining variable states
    print(list(tk_titles.get_states()))

即使按照图片进行了选择，我也会在控制台中得到以下信息： [0,0]

关于如何在 tkinter 窗口关闭后保留这些值的任何想法？我对 tkinter 的东西处理有什么可以改进的？

EDIT 1：添加了可用于示例的标题列表。 编辑 2：留下最少的代码示例。

解决方法

var = IntVar()

var = IntVar(parent)

title_window.protocol("WM_DELETE_WINDOW",lambda: closing_action(tk_titles,root))

settings = {sound: True,auto_complete: False,.....}

json_string = json.dumps(settings)
with open(filepath,''w'') as fh:
    fh.write(json_string)

with open(filepath,''r'') as fh:
    setting = json.loads(fh.read())