Tkinter SpinBox getting the last value

Question

I have a tkinter spinbox widget.

    val = IntVar()
    Spinbox(from_=1, to=10, textvariable=val, command=lambda:self.Fn(val.get()))

    def Fn(self, v):
        print v

When the spinbox is clicked, it prints value of new spin box value.

Instead I want the previous spinbox value - which could be one above or one below the current value.

Is there a way i can get the previous value ?

Answer 1

You just need to store the value, and print it the next time the function is called:

def Fn(self, v):
    result = self._oldvalue
    self._oldvalue = v
    print(result)

Don't forget to initialize self._oldvalue with some default value.