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From: Terry Reedy <tjreedy@udel.edu>
Subject: Re: How good is security via hashing
Date: Tue, 07 Jun 2011 14:26:14 -0400
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:7171

On 6/7/2011 7:35 AM, Robin Becker wrote:

> I guess what I'm asking is whether any sequence that's using random to
> generate random numbers is predictable if enough samples are drawn.

Apparently so. random.random is *not* 'cryptographically secure'.
https://secure.wikimedia.org/wikipedia/en/wiki/Cryptographically_secure_pseudorandom_number_generator

One of Python's crypto wrapper modules (sorry, forget which one) was 
recently modified to expose the crypto rng functions in the wrapped C 
library. It should be mentioned in What New for 3.3. You might be able 
to get at the same functions with ctypes.

-- 
Terry Jan Reedy