Get current user groups (win32)

usergroups_win32.py

import ctypes
import win32net

def getUsername(name_format=8):
    #Only NameUserSamCompatable supported if not on a domain.
    #'' is returned in that case.
    #NameUserSamCompatable = 2
    #NameUserPrincipal = 8,
    bufsz = ctypes.c_ulong()
    ctypes.windll.secur32.GetUserNameExW(name_format, None, ctypes.byref(bufsz))
    buf = (ctypes.c_wchar*bufsz.value)()
    ctypes.windll.secur32.GetUserNameExW(name_format, ctypes.byref(buf), ctypes.byref(bufsz))
    return buf.value

def getCurrentUserGroups():
    NameUserSamCompatable = 2
    NameUserPrincipal = 8
    un, _, dom = getUsername(NameUserPrincipal).partition('@')
    if un == dom == '':
        dom = None
        pc, _, un = getUsername(NameUserSamCompatable).partition('\\')
    if dom:
        groups = [i[0] for i in win32net.NetUserGetGroups(dom, un)]
    else:
        groups = win32net.NetUserGetLocalGroups(dom, un)
    return groups