How to send data between different classes (frames)?

[yapiyapo28]

Hi,

I am struggling with sending data between two different frames. The idea is simple: in one frame, there is an entry and a button and in the other frame there is a label that will display what I have enter in the entry when I press the button. However, I am not able to get the expected result.

The code is as follows:

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

import customtkinter as ctk

class Main(ctk.CTk): # Define Main class
def init(self):
super().init()
self.frame = Frame1(self)
self.frame.grid(row=0, column=0, padx=20, pady=20)
self.frame = Frame2(self)
self.frame.grid(row=0, column=1, padx=20, pady=20)

class Frame1(ctk.CTkFrame): # Define frame class for containing the label
def init(self, master):
super().init(master)
self.label = ctk.CTkLabel(master=self, text='', fg_color='grey25')
self.label.grid(row=0, column=0, padx=20, pady=20)

class Frame2(ctk.CTkFrame): # Define frame class for containing the entry and the button
def init(self, master):
super().init(master)
self.entry = ctk.CTkEntry(master=self, placeholder_text='Input')
self.entry.grid(row=0, column=0, padx=20, pady=20)
self.button = ctk.CTkButton(master=self, text='Click', command=lambda: self.send(self.entry.get()))
self.button.grid(row=0, column=1, padx=20, pady=20)

@classmethod # Calling method when the button is pressed
def send(cls, text):
Frame1.label.text = text

app = Main()

app.mainloop()

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

The error that pops up is:

AttributeError: type object 'Frame1' has no attribute 'label'

Any idea what is going on?

Thanks in advance :)

[dipeshSam]

It is recommended that you should learn some Python OOP and Tkinter basics. Your modified code is as follows:

import customtkinter as ctk

class Main(ctk.CTk): # Define Main class
    def __init__(self):
        super().__init__()
        self.frame1 = Frame1(self)
        self.frame1.grid(row=0, column=0, padx=20, pady=20)
        self.frame2 = Frame2(self, frame1_ref=self.frame1)
        self.frame2.grid(row=0, column=1, padx=20, pady=20)

class Frame1(ctk.CTkFrame): # Define frame class for containing the label
    def __init__(self, master):
        super().__init__(master)
        self.label = ctk.CTkLabel(master=self, text='', fg_color='grey25')
        self.label.grid(row=0, column=0, padx=20, pady=20)

class Frame2(ctk.CTkFrame): # Define frame class for containing the entry and the button    
    def __init__(self, master, frame1_ref):
        super().__init__(master)
        self.entry = ctk.CTkEntry(master=self, placeholder_text='Input')
        self.entry.grid(row=0, column=0, padx=20, pady=20)
        self.button = ctk.CTkButton(master=self, text='Click', command=lambda: self.send(self.entry.get()))
        self.button.grid(row=0, column=1, padx=20, pady=20)
        
        self.frame1_ref = frame1_ref
        
    def send(self, text):
        self.frame1_ref.label.configure(text=text)

app = Main()

app.mainloop()

Let me know if you need further help.
Regards.

[yapiyapo28]

Thanks for the help. This is what I was looking for. And thanks for the tip, I'm working on it ;)