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Apr 7, 2012, 1:06 PM
Post #2 of 2
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[issue12986] Using getrandbits() in uuid.uuid4() is faster and more readable
[In reply to]
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Antoine Pitrou <pitrou [at] free> added the comment:
> However, I'm not sure of the legitimacy of replacement suitable for
> cryptographic use `os.urandom` on fast pseudo-random
> `random.getrandbits`. Especially for applications that need to generate
> a lot of uuids.
Agreed. urandom() is supposed to incorporate "real" random, while getrandbits() uses a PRNG.
Also, as the OP shows, it's easy to inject your own random source:
>>> grb = "uuid.UUID(int=random.getrandbits(128), version=4)"
if you really need the speed.
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nosy: +pitrou
stage: -> patch review
versions: +Python 3.3 -Python 3.2
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