best way to increment an IntVar?

[Alan G Isaac]

On 6/24/2010 1:59 AM, Dennis Lee Bieber wrote:
> It is NOT a numeric "variable" in Python realms.

Sure, but why does it not behave more like one?
It seems both obvious and desirable, so I'm
guessing there is a good reason not to do it.

> 	So var+=increment can't be used because Python would rebind the name
> var to a new object

>>> import Tkinter as tk
>>>
>>> class IntVar2(tk.IntVar):
...   def __iadd__(self, val):
...     self.set(self.get()+val)
...     return self
...
>>> root = tk.Tk()
>>> myintvar2 = IntVar2()
>>> temp = myintvar2
>>> myintvar2 += 5
>>> print(myintvar2.get(),myintvar2 is temp)
(5, True)

Alan Isaac