Problem resizing a window and button placement

[Thomas Passin]

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.ninja at python.org> On
> Behalf Of MRAB via Python-list
> Sent: Saturday, February 24,
> 2024 7:49 PM
> To: python-list at 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.
>