问Python readline()

EN

    #include "DHT.h"
    #define echo 7
    #define triger 8
    #define photoresistorPin A0
    int lux; //Variable for photoresistor reading
    DHT dht;


    void setup() {
      Serial.begin(9600);
      dht.setup(2);
      pinMode(7,INPUT);
      pinMode(8,OUTPUT);

    }

    void loop() {
      lux = analogRead(photoresistorPin);
      float temperature = dht.getTemperature();
      long duration, distance;
      digitalWrite(triger, LOW);
      delayMicroseconds(2);
      digitalWrite(triger, HIGH);
      delayMicroseconds(10);
      digitalWrite(triger, LOW);
      duration = pulseIn(echo, HIGH);
      distance = (duration / 2) / 29.1;
      Serial.println(temperature);
      Serial.println(distance);
      Serial.println(lux);
      delay(500);

    }

import serial
ser= serial.Serial('/dev/ttyUSB0',9600)

while True:
   line = ser.readline()
   print(line.decode("utf-8"))

24 #temp
112 #distance
524 #lux