如何在Python3.6中的tkinter下从模块继承变量

Question

I'm beginner with Python. Q: I have two modules and I would to use a variable (self.vari) that exists in the module2, but I still have the same error ( AttributeError: type object 'mod2Class' has no attribute 'vari' ) even trying another way.

I'll samplify that with the following code:

========= #Module2:

import tkinter as tk

class mod2Class:

    def __init__(self, parent):

        self.vari=tk.StringVar()
        self.vari.set('Variable Value')

        self.txtBox2 = tk.Text(parent, width=10)
        self.txtBox2.grid(row=0, column=2)

#Module1

import tkinter as tk
from mod2 import mod2Class

class mod1Class(mod2Class):

    def __init__(self,parent):
        mod2Class.__init__(self,parent)

        self.lbl1=tk.Label(parent,width=15,text=mod2Class.vari)
        self.lbl1.grid(row=0,column=0)

s=tk.Tk()
n=mod1Class(s)
s.mainloop()

=====================

I would appreciate any help

Answer 1

In module 1 you've referred to the variable you want as:

mod2Class.self.vari

You've called mod2Class. init () with self as the first parameter, which makes your class in module 1 an instance of mod2Class. You also want to get the text from the variable, not just the object. Therefore, change that line to:

self.vari.get()

After a bit of research, I've confirmed my other thought, which is that you need to pass a Tk window to your StringVar. Try passing your parent window when you create self.vari.