>>> class GPT():

	pass



>>> a=GPT()

>>> isinstance(a, GPT)

True

>>> 

windows



>>> import subprocess

>>> p=subprocess.Popen(["powershell", 'gwmi -query "Select * from Win32_DiskPartition WHERE Index = 0" | Select-Object DiskIndex, @{Name="GPT";Expression={$_.Type.StartsWith("GPT")}}'], stdout=subprocess.PIPE)

>>> 

>>> print p.stdout.read()





                              DiskIndex                                     GPT



                              ---------                                     ---



                                      0                                   False













>>> 

linux



[root@pic2 ~]# fdisk -l



Disk /dev/vda: 32.2 GB, 32212254720 bytes, 62914560 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk label type: dos

Disk identifier: 0x000a1f93