Find the bug in this command pattern example:

Find the bug in this command pattern example:

class Command:
    def execute(self):
        pass

class LightOnCommand(Command):
    def __init__(self, light):
        self.light = light
    def execute(self):
        self.light.turn_on()

class Light:
    def turn_on(self):
        print("Light is on")

light = Light()
command = LightOnCommand(light)
command.execute