报告可读的磁盘使用信息

Question

我试图将disk_usage报告模仿为

In [147]: subprocess.Popen("df -h", shell=True)                                                                   
Out[147]: <subprocess.Popen at 0x106f7e240>

Filesystem      Size  Used Avail Use% Mounted on
/dev/disk1s1    113G   92G   17G  85% /
/dev/disk1s4    113G  4.1G   17G  20% /private/var/vm
/dev/disk2s1    121G   33G   89G  27% /Volumes/Transcend

尝试dict理解

In [150]: disk_usage = shutil.disk_usage('/')                                                                     
In [151]: disk_usage                                                                                              
Out[151]: usage(total=121123069952, used=98613166080, free=17531617280)
In [153]: { k : str(round(v/(2**30),2)) + "G" for k, v in disk_usage._asdict().items()}                           
Out[153]: {'total': '112.8G', 'used': '91.84G', 'free': '16.33G'}

我该如何使用python高级工具的功能方式完成