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Re: Random string of digits?

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References <roy-EDF7D2.08304625122011@news.panix.com> <mailman.4068.1324821046.27778.python-list@python.org> <roy-895E70.09213425122011@news.panix.com>
Date Mon, 26 Dec 2011 01:51:30 +1100
Subject Re: Random string of digits?
From Chris Angelico <rosuav@gmail.com>
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On Mon, Dec 26, 2011 at 1:21 AM, Roy Smith <roy@panix.com> wrote:
> It turns out, I don't really need 20 digits.  If I can count on
>
>>>> "%020d" % random.randint(0,999999999999999)
>
> to give me 15-ish digits, that's good enough for my needs and I'll
> probably go with that.  Thanks.

I'd say you can. The information about the Mersenne Twister underlying
the module's functions isn't marked as "CPython Implementation Note",
so I would expect that every Python implementation will provide a
minimum of 53-bit precision. (It does have the feeling of an
implementation detail though; is there a guarantee that two Pythons
will generate the same sequence of numbers from the same seed?)

ChrisA

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Thread

Random string of digits? Roy Smith <roy@panix.com> - 2011-12-25 08:30 -0500
  Re: Random string of digits? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-12-25 13:48 +0000
    Re: Random string of digits? Chris Angelico <rosuav@gmail.com> - 2011-12-26 00:54 +1100
      Re: Random string of digits? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-12-25 15:46 +0000
        Re: Random string of digits? Chris Angelico <rosuav@gmail.com> - 2011-12-26 03:11 +1100
          Re: Random string of digits? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-12-25 17:18 +0000
            Re: Random string of digits? Roy Smith <roy@panix.com> - 2011-12-25 12:41 -0500
              Re: Random string of digits? 88888 Dihedral <dihedral88888@googlemail.com> - 2011-12-25 11:50 -0800
              Re: Random string of digits? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-12-26 03:00 +0000
                Re: Random string of digits? Chris Angelico <rosuav@gmail.com> - 2011-12-26 14:43 +1100
                Re: Random string of digits? Roy Smith <roy@panix.com> - 2011-12-25 23:17 -0500
                Re: Random string of digits? Chris Angelico <rosuav@gmail.com> - 2011-12-26 15:26 +1100
    Re: Random string of digits? Serhiy Storchaka <storchaka@gmail.com> - 2011-12-25 19:32 +0200
  Re: Random string of digits? Chris Angelico <rosuav@gmail.com> - 2011-12-26 00:50 +1100
    Re: Random string of digits? Roy Smith <roy@panix.com> - 2011-12-25 09:21 -0500
      Re: Random string of digits? Chris Angelico <rosuav@gmail.com> - 2011-12-26 01:51 +1100
        Re: Random string of digits? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-12-25 15:27 +0000
  Re: Random string of digits? Chris Angelico <rosuav@gmail.com> - 2011-12-26 00:51 +1100
  Re: Random string of digits? Peter Otten <__peter__@web.de> - 2011-12-25 16:21 +0100

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