how to separate view and controller in python tkinter?
the lambda approach problem was exactly as above which is now resolved by using the pack in a new line. it seems more beautiful, here is the sample using lambda which is working fine:
1.view.py
from tkinter import *from controller import *class View(): def __init__(self,parent): button=Button(parent,text='click me') button.config(command=lambda : callback(button)) button.pack()root=Tk()app=View(root)root.mainloop()2.controller.py
def callback(button): button.config(text='you clicked me!') print('Hello World!')using this approach we can move all functionality away from UI and make it clean and readable.
In view.py you are calling:
self.button=Button(parent,text='click me').pack()
The pack function doesn't return the Button object that you want to assign to self.button, which causes the AttributeError later on. You should do:
self.button = Button(parent, text='click me')self.button.pack()