RaspberryPi：TypeError：不支持的格式字符串传递给 NoneType.__format__

Question

Using DHT11 sensor and raspberrypi to collect temperature and humidity value.Please help me out with this error.Thanks in advance

import sys
import Adafruit_DHT
import time

while True:

    humidity, temperature = Adafruit_DHT.read_retry(11, 4)

    print( 'Temp: {0:0.1f} C  Humidity: {1:0.1f} %'.format(temperature, humidity))
   # print()
time.sleep(1)

Answer 1

maybe this will help, after humidity,temeperature = Adafruit bla...bla...add line after that

humidity, temperature = Adafruit_DHT.read_retry(11, 4)

if humidity and temperature is not None:

print( 'Temp: {0:0.1f} C  Humidity: {1:0.1f} %'.format(temperature, humidity))

print()

time.sleep(1)