human
Solve the following python programming problem given the following code:
def __init__(self, device) : 
    self.device = device 
    self.x = 0 
    self.y = 0 
    self.z = 0 
    self.rx = 0 
    self.ry = 0 
    self.rz = 0 
    self.hat_x = 0 
    self.hat_y = 0 
    self.buttons = [] 
    self.x_control = None 
    self.y_control = None 
    self.z_control = None 
    self.rx_control = None 
    self.ry_control = None 
    self.rz_control = None 
    self.hat_x_control = None 
    self.hat_y_control = None 
    self.button_controls = [] 
    def add_axis(control) : 
        name = control.name 
        scale = (2.0 / (control.max - control.min)) 
        bias = ((- 1.0) - (control.min * scale)) 
        if control.inverted : 
            scale = (- scale) 
            bias = (- bias) 
setattr (self, (name + '_control'), control) 
        @ control.event 
        def on_change(value) : 
            setattr (self, name, ((value * scale) + bias)) 
def add_button(control) : 
        i = len (self.buttons) 
        self.buttons.append (False) 
        self.button_controls.append (control) 
        @ control.event 
        def on_change(value) : 
            self.buttons [i] = value 
def add_hat(control) : 
        self.hat_x_control = control 
        self.hat_y_control = control 
        @ control.event 
        def on_change(value) : 
            if ((value & 65535) == 65535) : 
                self.hat_x = self.hat_y = 0 
else : 
                if (control.max > 8) : 
                    value //= 4095 
if (0 <= value < 8) : 
                    (self.hat_x, self.hat_y) = ((0, 1), (1, 1), (1, 0), (1, (- 1)), (0, (- 1)), ((- 1), (- 1)), ((- 1), 0), ((- 1), 1)) [value] 
else : 
                    self.hat_x = self.hat_y = 0 
for control in device.get_controls () : 
        if isinstance (control, AbsoluteAxis) : 
            if (control.name in ('x', 'y', 'z', 'rx', 'ry', 'rz', 'hat_x', 'hat_y')) : 
                add_axis (control) 
else : 
                if (add_hat.name == 'hat') : 
                    add_hat (control) 
else : 
            if isinstance (control, Button)...

    
    

    Fix the buggy line: if (add_hat.name == 'hat') :
assistant
#Here is Python program to fix the buggy line: if (add_hat.

if (control.name == 'hat') :