camera.py

class Sensor:
    """Lo vamos a simular"""
    def is_detecting_movement(self) -> bool:
        pass


class Recorder:
    """Lo vamos a simular"""
    def start_recording(self):
        pass

    def stop_recording(self):
        pass


class Controller:
    sensor: Sensor  # dependency
    recorder: Recorder  # dependency

    def __init__(self, sensor: Sensor, recorder: Recorder):
        self.sensor = sensor
        self.recorder = recorder

    def record_movement(self):
        if self.sensor.is_detecting_movement():
            self.recorder.start_recording()
        else:
            self.recorder.stop_recording()