Disk information in macOS

diskInfo.py

#!/usr/bin/python

# Function returns a dict containing the results of `diskutil info /dev/disk`

import plistlib
import subprocess

def disk_info(disk):
    cmd = ['/usr/sbin/diskutil', 'info', '-plist', disk]
    (results, error) = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()
    if results:
        return plistlib.readPlistFromString(results)
    else:
        return error