Very practical question

[Simon Forman]

madpython wrote:

> ...
> 	self.b=Tkinter.Button(root,txt="Button",command=self.doSmth).pack()
> 	self.l=Tkinter.Label(root,txt="default").pack()
> def doSmth(self):
> 	var=globals()["m"].__dict__["progLogic"].func("some
> input")
> 	self.l.config(txt=var)
> 	self.l.update_idletasks()
> ...


pack() method returns None, *not* the packed widget.

>>> import Tkinter
>>> b = Tkinter.Button()
>>> n = b.pack()
>>> n
>>> print n
None