import ctypes
import os
import platform
import sys

def get_free_space_mb(folder):
    """ Return folder/drive free space (in bytes)
    """
    if platform.system() == 'Windows':
        free_bytes = ctypes.c_ulonglong(0)
        ctypes.windll.kernel32.GetDiskFreeSpaceExW(ctypes.c_wchar_p(folder), None, None, ctypes.pointer(free_bytes))
        return free_bytes.value/1024/1024/1024
    else:
        st = os.statvfs(folder)
        return st.f_bavail * st.f_frsize/1024/1024

print(get_free_space_mb('C:\\'),'GB')

import win32com.client as com

def TotalSize(drive):
    """ Return the TotalSize of a shared drive [GB]"""
    try:
        fso = com.Dispatch("Scripting.FileSystemObject")
        drv = fso.GetDrive(drive)
        return drv.TotalSize/2**30
    except:
        return 0

def FreeSpace(drive):
    """ Return the FreeSpace of a shared drive [GB]"""
    try:
        fso = com.Dispatch("Scripting.FileSystemObject")
        drv = fso.GetDrive(drive)
        return drv.FreeSpace/2**30
    except:
        return 0

workstations = ['dolphins']
print ('Hard drive sizes:')
for compName in workstations:
    drive = '\\\\' + compName + '\\c$'
    print ('*************************************************\n')
    print (compName)
    print ('TotalSize of %s = %f GB' % (drive, TotalSize(drive)))
    print ('FreeSpace on %s = %f GB' % (drive, FreeSpace(drive)))
    print ('*************************************************\n')