RaspberryPi read DHT22 with Adafruit_Python_DHT

get_ambient_values.py

#!/usr/bin/python3

import sys
import Adafruit_DHT

sensor = Adafruit_DHT.DHT22
sensor_name = sys.argv[1]
pin = sys.argv[2]

humidity, temperature = Adafruit_DHT.read_retry(sensor, pin, delay_seconds=3)

if humidity is not None and temperature is not None:
    print('ambient,sensor_name={} temperature={:0.1f},humidity={:0.1f}'.format(sensor_name, temperature, humidity))
    sys.exit(0)
else:
    sys.exit(1)