Need Help With .get()

Python Help
1

Hello,

I have a test code snippet of which I read in the user name and password. However, when
I attempt to read the entered input via the ‘get()’ function/method, I keep getting the following error:

AttributeError: 'NoneType' object has no attribute 'get'

My code snippet is:

import tkinter as tk

class login(tk.Tk):
    
    def __init__(self):
        
        super().__init__()
        
        tk.Tk.title(self,'PN: F4581-01 Test')   # Window title (not real pn)
        tk.Tk.geometry(self, '280x150') 
        
        login_info = tk.LabelFrame(self, padx = 15, pady = 10,
                                text = "Login Info")
        
        tk.Label(login_info, text = "First name").grid(row = 0)
        tk.Label(login_info, text = "Password").grid(row = 1)
        self.name = tk.Entry(login_info).grid(row = 0, column = 1, sticky = tk.W)
        self.password = tk.Entry(login_info, show = '*').grid(row = 1, column = 1, sticky = tk.W)
        login_info.pack(padx = 10, pady = 10)

        self.btn_start_test = tk.Button(self, text = "Start Test", command = self.print_password)
        self.btn_start_test.pack(padx = 10, pady = 10, side = tk.BOTTOM)

    def print_password(self): # test method to verify password entry
        
        print('Hello everyone!')
        print('Password: {}'.format(self.name.get()))
        print('Password: {}'.format(self.password.get()))

if __name__ == "__main__":
        
    app = login()
    app.mainloop()

Can someone please help as to why the get() method is not working as expected.

2

I think the calls to .grid() should be on a different line. .grid() returns None.

You want to make the element, save it, call .get() on it later.

For example:

self.password = tk.Entry(login_info, show = '*')
self.password.grid(row = 1, column = 1, sticky = tk.W)

And later on, use self.password.get()

1 Like
3

Wow!. Got it. Thank you very much! You’re a lifesaver. :smiley:

1 Like