“Deshabilitar el botón Kivy en KV” Código de respuesta

Deshabilitar el botón Kivy en KV

#.kv file implementation of RelativeLayout 
  
<RelativeLayout>: 
  
    # creating the Disabled button 
    Button: 
          
        text:"B1"
  
        background_color: 0.1, 0.5, 0.6, 1
      
        # positioned at 0 % in x axis and 0 % in y axis 
        # from bottom left, i.e x, y = 0, 0 from bottom left: 
        pos_hint: {"x":0.2, "y":.4}
        size_hint: 0.3, 0.2
  
        # Disabling button
        disabled: True
  
        # working button
    Button: 
        text:"B2"
        background_color: 1, 0, 0, 1
        pos_hint: {"x":.6, "y":.4}
        size_hint: 0.3, 0.2