circuitpython/examples/hwapi/hwconfig_console.py

# This is hwconfig for "emulation" for cases when there's no real hardware.
# It just prints information to console.
class LEDClass:
    def __init__(self, id):
        self.id = "LED(%d):" % id

    def value(self, v):
        print(self.id, v)

    def on(self):
        self.value(1)

    def off(self):
        self.value(0)


LED = LEDClass(1)
LED2 = LEDClass(12)