I built an allsky camera with a temperature sensor and a heater. The heater is supposed to turn when the sensor (measure_temp()) return a temperature below 8, which is checked every 15 minutes. However, about every 4th measurement fails and so I included an error handler that returns 7, so that the heater turns on if the sensor returns an error, but it seems like a bad solution. Is there a better way to handle the error like run the function until no error occurs?

import RPi.GPIO as GPIO
import time
import datetime
import time
import board
import adafruit_dht

def measure_temp():
dhtDevice = adafruit_dht.DHT22(board.D18)

try:
    temperature = dhtDevice.temperature
    error_test = ""
except RuntimeError as error:
    temperature = 7 
except:
    temperature = 7    
return temperature


if __name__ == '__main__':

while True:
    if  measure_temp() < 8:
        GPIO.setmode(GPIO.BCM)
        RELAIS_1_GPIO = 17
        GPIO.setup(RELAIS_1_GPIO, GPIO.OUT)
        GPIO.output(RELAIS_1_GPIO, GPIO.HIGH)
        print('{:%d.%m.%Y %H:%M:%S}'.format(datetime.datetime.now()))
        print('Heating on')
        print()
        time.sleep(900)
        GPIO.cleanup()
    else:
        GPIO.setmode(GPIO.BCM)
        RELAIS_1_GPIO = 17
        GPIO.setup(RELAIS_1_GPIO, GPIO.OUT)
        GPIO.output(RELAIS_1_GPIO, GPIO.LOW)
        print('{:%d.%m.%Y %H:%M:%S}'.format(datetime.datetime.now()))
        print('Heating off')
        time.sleep(900)
        GPIO.cleanup()

I built an allsky camera with a temperature sensor and a heater. The heater is supposed to turn when the sensor (measure_temp()) return a temperature below 8, which is checked every 15 minutes. However, about every 4th measurement fails and so I included an error handler that returns 7, so that the heater turns on if the sensor returns an error, but it seems like a bad solution. Is there a better way to handle the error like run the function until no error occurs?

import RPi.GPIO as GPIO
import time
import datetime
import time
import board
import adafruit_dht

def measure_temp():
    dhtDevice = adafruit_dht.DHT22(board.D18)

    try:
        temperature = dhtDevice.temperature
        error_test = ""
    except RuntimeError as error:
        temperature = 7
    except:
        temperature = 7        
    return temperature


if __name__ == '__main__':

    while True:
        if  measure_temp() < 8:
            GPIO.setmode(GPIO.BCM)
            RELAIS_1_GPIO = 17
            GPIO.setup(RELAIS_1_GPIO, GPIO.OUT)
            GPIO.output(RELAIS_1_GPIO, GPIO.HIGH)
            print('{:%d.%m.%Y %H:%M:%S}'.format(datetime.datetime.now()))
            print('Heating on')
            print()
            time.sleep(900)
            GPIO.cleanup()
        else:
            GPIO.setmode(GPIO.BCM)
            RELAIS_1_GPIO = 17
            GPIO.setup(RELAIS_1_GPIO, GPIO.OUT)
            GPIO.output(RELAIS_1_GPIO, GPIO.LOW)
            print('{:%d.%m.%Y %H:%M:%S}'.format(datetime.datetime.now()))
            print('Heating off')
            time.sleep(900)
            GPIO.cleanup()