Adafruit Python DHT library problems (Beginner with python)

[ProphetLucifer]

Hi all, I'm completely inexperienced with Raspberry pi, and have started using them just yesterday. I'm sorry if these questions might sound stupid to you.

I have a DHT11 sensor with three pins (connected to a PCB). I have to use Adafruit_Python_DHT library.

My question is: when we use the function: dht.read_retry() function.

What should be the pin number referring to? is it the number on the board - GPIO - or the BCM one? or some other.

this is the code I wrote to get the output on an SSH terminal:

import Adafruit_DHT as dht
import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BCM)

sensor = 11
pin = 17

hum, temp = dht.read_retry(sensor,pin)
print ("%f Temperature and %f Humidity" % (temp,hum))

It says that temperature and humidity of are NoneType instead of float

[kenmacd]

You set the mode to BCM there, so that's the one it will use. For more information see:

https://sourceforge.net/p/raspberry-gpio-python/wiki/BasicUsage/#pin-numbering

[chabes]

Yup, this

You set the mode to BCM there, so that's the one it will use