[摘抄]树莓派获取 CPU温度 ARM DISK 使用量

import os
    
    # Return CPU temperature as a character string                                      
    def getCPUtemperature():
        res = os.popen('vcgencmd measure_temp').readline()
        return(res.replace("temp=","").replace("'C\n",""))
    
    # Return RAM information (unit=kb) in a list                                       
    # Index 0: total RAM                                                               
    # Index 1: used RAM                                                                 
    # Index 2: free RAM                                                                 
    def getRAMinfo():
        p = os.popen('free')
        i = 0
        while 1:
            i = i + 1
            line = p.readline()
            if i==2:
                return(line.split()[1:4])
    
    # Return % of CPU used by user as a character string                                
    def getCPUuse():
        return(str(os.popen("top -n1 | awk '/Cpu$s$:/ {print $2}'").readline().strip()))
    
    # Return information about disk space as a list (unit included)                     
    # Index 0: total disk space                                                         
    # Index 1: used disk space                                                         
    # Index 2: remaining disk space                                                     
    # Index 3: percentage of disk used                                                  
    def getDiskSpace():
        p = os.popen("df -h /")
        i = 0
        while 1:
            i = i +1
            line = p.readline()
            if i==2:
                return(line.split()[1:5])
    
    
    # CPU informatiom
    CPU_temp = getCPUtemperature()
    CPU_usage = getCPUuse()
    
    # RAM information
    # Output is in kb, here I convert it in Mb for readability
    RAM_stats = getRAMinfo()
    RAM_total = round(int(RAM_stats[0]) / 1000,1)
    RAM_used = round(int(RAM_stats[1]) / 1000,1)
    RAM_free = round(int(RAM_stats[2]) / 1000,1)
    
    # Disk information
    DISK_stats = getDiskSpace()
    DISK_total = DISK_stats[0]
    DISK_used = DISK_stats[1]
    DISK_perc = DISK_stats[3]
    
    if __name__ == '__main__':
        print('')
        print('CPU Temperature = '+CPU_temp)
        print('CPU Use = '+CPU_usage)
        print('')
        print('RAM Total = '+str(RAM_total)+' MB')
        print('RAM Used = '+str(RAM_used)+' MB')
        print('RAM Free = '+str(RAM_free)+' MB')
        print('')  
        print('DISK Total Space = '+str(DISK_total)+'B')
        print('DISK Used Space = '+str(DISK_used)+'B')
        print('DISK Used Percentage = '+str(DISK_perc))

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