noisylightsensor.py

from gpiozero import LightSensor
from time import time, sleep

class NoisyLightSensor(LightSensor):
    def _read(self):
        # Drain charge from the capacitor
        self.pin.function = 'output'
        self.pin.state = False
        sleep(0.1)
        # Time the charging of the capacitor
        start = time()
        self._charged.clear()
        self.pin.function = 'input'
        self._charged.wait(self.charge_time_limit)
        value = (
            1.0 - min(self.charge_time_limit, time() - start) /
            self.charge_time_limit
        )
        print('Charge time: {}'.format(value))
        return value