from machine import ADC, Pin
import time
class LDR:
    def __init__(self, pin, min_value=100):
        if min-value >= max_value:
            raise exception('Min value is greater or equal to max value')
            self.adc = ADC(Pin(pin))
            self.adc.atten(ADC.ATTN_11DB)
            self.min_value = min_value
            self.man_value = man_value
        def read(self):
            return self.adc.read()
        def read(self):
            return(self.max_value - self.min_value)* self.read()/4095
ldr = LDR(35)
led1 = Pin(2, Pin.OUT)
led2 = Pin(4, Pin.OUT)
led3 = Pin(5, Pin.OUT)
while True:
    value = ldr.value()
    Print('Value = {}'.format(value))
    time.sleep(0.5)
    if value <= 25:
        led1.on()
        led2.off()
        led3.off()
    elif value <= 75:
        led1.off()
        led2.on()
        led3.off()
    elif value > 75:
        led1.off()
        led2.off()
        led3.on()
    else:
        led1.off()
        led2.off()
        led3.off()