import os
import time
import json
from sense_hat import SenseHat

# Declare SenseHAT instance
sense = SenseHat()

# Class that will calculate an accurate temperature for the program to utilise
class GetAccurateTemp():

    # Reads CPU temp from Raspberry Pi OS
    def get_cpu_temp():
        res = os.popen("vcgencmd measure_temp").readline()
        return float(res.replace("temp=","").replace("'C\n",""))

    # Calculates the 'real (aprox)' temperature compensating CPU heating.
    def calc_temp():
        # Define sense HAT temperature readings as variables + CPU temp
        temp_hum = sense.get_temperature_from_humidity()
        temp_pre = sense.get_temperature_from_pressure()
        temp_cpu = GetAccurateTemp.get_cpu_temp()

        # Calculations
        temp_incorr = (temp_hum + temp_pre) / 2
        temp_corr = temp_incorr - ((temp_cpu - temp_incorr) / 1.5)
        return temp_corr

print(GetAccurateTemp.calc_temp())