__del__ in classes derived from Tkinter classes

[Petr Klyushkin]

Hello, Fredrik!

>>>>> "Fredrik" == Fredrik Lundh writes:

 Fredrik> Petr Klyushkin wrote
 >> I'm a Python and Tkinter newbie.  I've noticed that __del__
 >> methods of my classes derived from Tkinter classes are never
 >> called.  Is this normal behavior, or I am doing something wrong?

[...]

 Fredrik> tkinter maintains an internal widget tree.  if you want to
 Fredrik> print "hey" when your toplevel widget is destroyed, over-
 Fredrik> ride the "destroy" method:

[...]

So, when will Python object be destroyed?  Suppose, I have following code:

def f():
  test2 = Test()
f()

When will test2 (Python object! not a Tk widget it represents) be destroyed?


 Fredrik> (and using __del__ is usually bad style even outside
 Fredrik> Tkinter, but that's another story).

Why?

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