Newb Tkinter Question: Object has no attribute 'tk'

[python programming newb]

Hi all, first post.

I'm new to python and tkinter. I'm trying to write a program that
opens the root window with a button that then opens a toplevel window
that then has it's own widgets. I can get the new toplevel window to
open but none of the widgets appear. The console gives me:

AttributeError: 'NewWindow' object has no attribute 'tk'

Here's my code:

####
from Tkinter import *


class Application(Fra me):
"""The full screen window with menu"""
def __init__(self, master):

Frame.__init__( self, master)
self.grid()
self.create_men u()
self.create_wid get()

def create_menu(sel f):
"""Create file and help menu"""
#Create Filemenu
filemenu = Menu(menubar, tearoff=0)
filemenu.add_co mmand(label = "Exit", command = root.quit)
menubar.add_cas cade(label="Fil e", menu=filemenu)
#Create Helpmenu
helpmenu = Menu(menubar, tearoff=0)
helpmenu.add_co mmand(label="Ab out", command=hello)
menubar.add_cas cade(label="Hel p", menu=helpmenu)

def create_widget(s elf):
"""Make a button in the center that when pushed opens another
window"""
self.bttn1 = Button(self, text = "Push to open new window",
command=NewWind ow)
self.bttn1.grid ()


class NewWindow(objec t):

def __init__(self):
self.z = Toplevel()
self.z.geometry ("640x480")
self.z.title("T his is the New Window")
self.frame = Frame(self.z)
self.create_wid getnew()
self.frame.grid ()

def create_widgetne w(self):
self.lbl = Label(self, text = "Here is a label")
self.lbl.grid(r ow = 0, column = 1, sticky = N)
self.bttn = Button(self, text = "Close", command=self.z. quit)
self.bttn.grid( row = 2, column = 1, sticky = S)

#Main

def hello():
print "hello in the terminal"

root = Tk()
root.title("ROO T WINDOW")
root.geometry(" 300x200")
menubar = Menu(root)
root.config(men u=menubar)
mainapp=Applica tion(root)
root.mainloop()

[Simon Forman]

Re: Newb Tkinter Question: Object has no attribute 'tk'

python programming newb wrote:[color=blue]
> Hi all, first post.
>
> I'm new to python and tkinter. I'm trying to write a program that
> opens the root window with a button that then opens a toplevel window
> that then has it's own widgets. I can get the new toplevel window to
> open but none of the widgets appear. The console gives me:
>
> AttributeError: 'NewWindow' object has no attribute 'tk'
>
> Here's my code:[/color]


Please post the entire traceback, not just the error message, thanks.

~Simon

[Simon Yau]

Re: Newb Tkinter Question: Object has no attribute 'tk'

python programming newb wrote:[color=blue]
>
> I'm new to python and tkinter. I'm trying to write a program that
> opens the root window with a button that then opens a toplevel window
> that then has it's own widgets. I can get the new toplevel window to
> open but none of the widgets appear. The console gives me:
>
> AttributeError: 'NewWindow' object has no attribute 'tk'
>
> Here's my code:
>
> [snipped...]
>
> class NewWindow(objec t):
>
> def __init__(self):
> self.z = Toplevel()
> self.z.geometry ("640x480")
> self.z.title("T his is the New Window")
> self.frame = Frame(self.z)
> self.create_wid getnew()
> self.frame.grid ()
>
> def create_widgetne w(self):
> self.lbl = Label(self, text = "Here is a label")
> self.lbl.grid(r ow = 0, column = 1, sticky = N)
> self.bttn = Button(self, text = "Close", command=self.z. quit)
> self.bttn.grid( row = 2, column = 1, sticky = S)
> [snipped...][/color]

You're referencing self (object) instead of a Frame when creating the
Label. Change self to self.frame in both the Label and Button
initialization and it'll work.

Hope it helps,
Simon