subprocess模块

output = subprocess.run(['df', '-h'],capture_output=True)

outout.returncode #获取执行的状态码 0为正常

output.stdout.decode() #获取执行结果 默认结果为bytes类型，所需要decode

#!/usr/bin/python37
#-*- coding: utf-8 -*-
import subprocess


def check_file():
　　"""检查文件系统"""
    output = subprocess.run('df -h',shell=True,capture_output=True)
    file_obj = output.stdout.decode()
    line = file_obj.split('\n')
    for i in line[1:-1]:
        i = i.split()
        print(i[0],i[4].replace('%',''))

check_file()