the activate function doesn't need to be private

buttond.py

@@ -28,8 +28,8 @@ from gpiozero import Button, GPIODeviceError
 logging.basicConfig(level=logging.INFO)
 log = logging.getLogger(__name__)
 
-# callback intermidiary to sanitize user input
-def _activate(macro):
+def activate(macro):
+    """Sanitize user configured macros."""
     if macro is None:
         return
     macro = macro.strip('\"').upper()