code: def set_unbind(self):
          
          IntegerEntry.set_unbind(self)
          self.unbind('<Button-1>')
          self.unbind('<Button-3>')
          self.unbind('<Up>')
          self.unbind('<Down>')
          self.unbind('<Enter>')
          self.unbind('<Next>')
          self.unbind('<Prior>')
docs: Unsets key bindings -- we need this more than once