Add Tkinter's Intvar To An Integer

I'm having some trouble adding a value taken from an Entry box and adding it to an existing number. In this case, I want the value of the 'change speed' box to be added to the robo

Solution 1:

You didn't show the code defining .speed or delta_speed, so I'm guessing here. Try:

    self.speed += delta_speed.get()
                             ^^^^^^

If delta_speed is an IntVar, .get() will retrieve its value as a Python int.