关闭时是否可以让 Tkinter 记住变量 [英] Is it possible to make Tkinter remember variables when you close it

问题描述

当我打开程序时，我想拥有我离开时相同的设置.例如，将标签设置为一个值，当我关闭程序并再次打开它时仍然是该值.这在 Tkinter 中可能吗?如果是这样，我会怎么做?

When i open the program, I want to have the same settings there were when i left. For instance setting a label to a value and still be that value when i close the program and open it again. Is this possible in Tkinter? If so, how would i do it?

推荐答案

将数据存储到某处(文本文件、json、pickle 或其他东西)并加载它在启动期间.

Store the data to somewhere (a text file, json, pickle or something else) and load it during startup.

所以你的程序可能是这样的:

So your program may look like this:

from tkinter import *
import os

tk=Tk()
var=StringVar()
Entry(tk,textvariable=var).pack()

# load the text before startup
if os.path.isfile('save.txt'):
    with open('save.txt','r') as f:
        var.set(f.read())

mainloop()

# save the text after shutdown
with open('save.txt','w') as f:
    f.write(var.get())

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