A script that can measure rpi's temperature and clock speed

rpi_cpu_temp_monitor.py

# coding=UTF-8

'''
Python rpi monitor program
Call vcgencmd in shell and get the temp info and cpu clock info
20180314
'''

import subprocess as sub
import time
import sys

def main():
    while True:
        process_temp = sub.Popen(['vcgencmd', 'measure_temp'], stdout=sub.PIPE)
        process_clock = sub.Popen(['vcgencmd', 'measure_clock', 'arm'], stdout=sub.PIPE)
        stdout_temp = process_temp.communicate()[0]
        stdout_clock = process_clock.communicate()[0]
        st_temp = str(stdout_temp)
        st_clock = str(stdout_clock)
        temp = float(st_temp.split('=')[1].split('\'')[0])
        clock = float(st_clock.split('=')[1].strip().split('\\')[0])

        print('The temperature of system = {} C'.format(temp), flush=True)
        print('The CPU clock = {} GHz'.format((clock)/1000000000), flush=True)
        sys.stdout.flush()
        time.sleep(2)





if __name__ == "__main__":
    main()