import win32api, win32security
import win32con, ntsecuritycon, winnt
import os

temp_dir=win32api.GetTempPath()
fname=win32api.GetTempFileName(temp_dir,'rsk')[0]
print fname
## file can't exist
os.remove(fname)

## enable backup and restore privs
required_privs = ((win32security.LookupPrivilegeValue('',ntsecuritycon.SE_BACKUP_NAME),win32con.SE_PRIVILEGE_ENABLED),
                (win32security.LookupPrivilegeValue('',ntsecuritycon.SE_RESTORE_NAME),win32con.SE_PRIVILEGE_ENABLED)
                )
ph = win32api.GetCurrentProcess()
th = win32security.OpenProcessToken(ph, win32con.TOKEN_READ|win32con.TOKEN_ADJUST_PRIVILEGES)
adjusted_privs=win32security.AdjustTokenPrivileges(th,0,required_privs)

try:
    sa=win32security.SECURITY_ATTRIBUTES()
    my_sid = win32security.GetTokenInformation(th,ntsecuritycon.TokenUser)[0]
    sa.SECURITY_DESCRIPTOR.SetSecurityDescriptorOwner(my_sid,0)

    k, disp=win32api.RegCreateKeyEx(win32con.HKEY_CURRENT_USER, 'Python test key', SecurityAttributes=sa,
        samDesired=win32con.KEY_ALL_ACCESS, Class='some class', Options=0)
    win32api.RegSetValue(k, None, win32con.REG_SZ, 'Default value for python test key')

    subk, disp=win32api.RegCreateKeyEx(k, 'python test subkey', SecurityAttributes=sa,
        samDesired=win32con.KEY_ALL_ACCESS, Class='some other class', Options=0)
    win32api.RegSetValue(subk, None, win32con.REG_SZ, 'Default value for subkey')

    win32api.RegSaveKeyEx(k, fname, Flags=winnt.REG_STANDARD_FORMAT, SecurityAttributes=sa)

    restored_key, disp=win32api.RegCreateKeyEx(win32con.HKEY_CURRENT_USER, 'Python test key(restored)', SecurityAttributes=sa,
        samDesired=win32con.KEY_ALL_ACCESS, Class='restored class', Options=0)
    win32api.RegRestoreKey(restored_key, fname)
finally:
    win32security.AdjustTokenPrivileges(th, 0, adjusted_privs)