[Python-Dev] UUID module

Thomas Heller theller at python.net
Sat Jun 10 18:39:04 CEST 2006

Phillip J. Eby wrote:
> At 08:22 AM 6/10/2006 -0500, Ka-Ping Yee wrote:
>>Finally, Phillip brought up PEAK:
>> > PEAK's uuid module does this such that if win32all is present,
>> > you get a Windows GUID, or if you have a FreeBSD 5+ or
>> > NetBSD 2+ kernel you use the local platform uuidgen API.  See e.g.:
>>...so i looked at PEAK's getnodeid48() routine and borrowed the
>>Win32 calls from there, with a comment giving attribution to PEAK.
> There appears to be a transcription error, there; the second win32 import 
> isn't covered by a try/except and the ImportError seems to have disappeared 
> as well.
> Also, for Python 2.5, these imports could probably be replaced with a 
> ctypes call, though I'm not experienced enough w/ctypes to figure out what 
> the call should be.
> Similarly, for the _uuidgen module, you've not included the C source for 
> that module or the setup.py incantations to build it.  But again, it could 
> probably be replaced by ctypes calls to uuidgen(2) on BSD-ish platforms.
> I'll take a whack at addressing these once the code is in, though, unless 
> there's a ctypes guru or two available...?

I don't know if this is the uuidgen you're talking about, but on linux there
is libuuid:

>>> from ctypes import *
>>> lib = CDLL("libuuid.so.1")
>>> uuid = create_string_buffer(16)
>>> lib.uuid_generate(byref(uuid))
>>> from binascii import hexlify
>>> hexlify(buffer(uuid))

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