获取Linux系统内存情况，获取linux内存,import subpr

获取Linux系统内存情况，获取linux内存,import subpr

import subprocessimport rekeydic = {"MemTotal":"总内存(单位G)",          "MemFree":"剩余内存(单位G)",          "MemAvailable":"可用内存(单位G)",          "Cached":"缓存内存(单位G)"}def command(command):    p = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)    resultDic = {}    for line in p.stdout.readlines():        line = str(line,encoding="utf-8")        result = re.split("\s*",line)        if result[0][:-1] in keydic:            resultDic[keydic[result[0][:-1]]] = "%.2f" %(int(result[1])/(1024**2))    return resultDicif __name__ == "__main__":   print(command("cat /proc/meminfo"))