'Frame' has no attribute 'tk' - Python Thinter

I try resolve my problem with this message from PyCharm and Idle.
'type object 'Frame' has no attribute 'tk''

What this mean? Why Python don't show new window with 3 Buttons?

Thank you very much for your help!

from tkinter import*


class Application(Frame):
def __init__(self, master):
""" Frame """
super(Application, self).__init__(master)
self.grid()
self.create_widgets()

def create_widgets(self):
"""Buttons"""
#Buttons1
self.bttn1 = Button("Test1")
self.bttn1.grid()

#Buttons2
self.aaaa2 = Button(self)
self.aaaa2.grid()
self.aaaa2.configure(text="Test2")

#Buttons3
self.bttn3 = Button (self)
self.bttn3.grid()
self.bttn3["text"] = "Test3"

#Main part of the program

root = Tk()
root.title("Name Window")
root.geometry("210x85")

Application(Frame)

root.mainloop()


1 Answer
1

Your code has a class called Application which sublcasses tkinter.Frame. On initialization, tkinter.Frame accepts a master argument, which it then inspects for the attribute tk.

Application

tkinter.Frame

tkinter.Frame

master

tk

When you initialize the class Application, it takes the argument you apply (Frame) and passes it to its superclass tkinter.Frame (which I already explained inspects the object for a tk attribute). Frame.tk does not exist, so it raises an error.

Application

Frame

tkinter.Frame

tk

Frame.tk

An alternative, simpler example for edification:

class MyClass():
def __init__(self,value):
self.key = value.key

MyClass(None)


The above code raises the same error (obviously with different names) because it tries to get the value of None.key and None does not have an attribute called key.

None.key

None

key

As for how you display your frame with 3 buttons, you need to pass root as the master of your new Application instance. This will add the instance to root (the TopLevel/Tk Window) and then you need to set the geometry manager for that Application instance (pack, grid, or place).

root

Application

root

Application

Furthermore, you are going to run into the same exact error with bttn1 because you are passing "Test1" as the master of tkinter.Button (and strings don't have an attribute tk).

bttn1

"Test1"

tkinter.Button

tk

Finally, this question has been asked a lot (especially on this site), so please in the future make a google search before you ask.

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.