On 2/24/2024 9:51 PM, Steve GS via Python-list wrote:
First of all, please make sure that the formatting is readable and
especially the indentation. This is Python, after all.
Do not use tabs; use 3 or 4 spaces instead of each tab.
import tkinter as tk
#global Ww Neither global
helps
def on_configure(*args):
# print(args)
#global Ww Neither
global helps
Ww = root.winfo_width()
print("WwInside = <" +
str(Ww) + ">")
root = tk.Tk()
root.bind('<Configure>',
on_configure)
print("WwOutside = <" +
str(Ww) + ">")
#NameError: name 'Ww' is not
defined
The function that declares Ww hasn't run yet. As I wrote earlier, the
function bound to the callback should do all the work for the callback,
or it should call other functions that do. That's if you don't let a
layout do it all for you, as others have written.
root.mainloop()
SGA
-----Original Message-----
From: Python-list
<python-list-bounces+gronicus=
sga.ni...@python.org> On
Behalf Of MRAB via Python-list
Sent: Saturday, February 24,
2024 7:49 PM
To: python-list@python.org
Subject: Re: Problem resizing
a window and button placement
On 2024-02-25 00:33, Steve GS
via Python-list wrote:
"Well, yes, in Python a
variable created inside a
function or method is local
to
that function unless you
declare it global."
Yes, I knew that. I tried to
global it both before the
function call and within it.
Same for when I created the
variable. If I try to use it
in the rest of the code, it
keeps coming up as not
declared. In other
functions,
I can 'return' the variable
but that apparently would
not
work for this function.
Is this type of function any
different that that which I
have been using?
Please post a short example
that shows the problem.
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