[pygtk] Window existance

[Michal Pasternak]

Russell Shaw [Sun, Feb 15, 2004 at 07:06:10PM +1100]:
> Hi,
> 
> In a class, i have:
> 
>   self.window=gtk.Window(gtk.WINDOW_TOPLEVEL)
> 
> Later on, there is:
> 
>   if(self.window)
>     self.window.destroy()
> 
> I get an error:
> 
>   File "db.py", line 82
>       if(self.window)
>                     ^
> 
> How do i test that the window exists? (or that a pointer is not null)

Python doesn't have "null pointers". You should do:

	if self.window is not None:
	
or:

	if self.window != None:
	
instead. Python tutorial is here:

	http://python.org/doc/current/tut/tut.html