Re: [Python-Dev] n.numbits: method or property?
Greg Ewing canterbury.ac.nz> writes: > > Terry Reedy wrote: > > > Math is pretty much float, not int functions. > > Also, it's supposed to be confining itself to > wrapping the C math library. Too late, because we now have a math.factorial() function. As for numbits, I think it should be a method, because while it's very fast for the current implementation of longs, it could be longer to calculate for a long implementation using something other than a power-of-2 base. Having it as a method may also be more consistent with a hypothetical popcount() method. Regards Antoine. ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] Python 2.5.3: call for patches
Martin v. Löwis schrieb: >> I would like to apply fixes for some CVE's which are addressed in 2.5 but not >> yet in 2.4. this would include >> >> CVE-2007-4965 >> CVE-2008-1679 >> CVE-2008-1721 >> CVE-2008-2315 >> CVE-2008-3144 >> CVE-2008-1887 >> CVE-2008-4864 > > Can you identify the revisions that would need backporting? > > I could only find (trunk revisions) > CVE-2007-4965: r65880 > CVE-2008-1721: r62235, issue2586 > CVE-2008-3144: issue2588, issue2589, r63734, r63728. > CVE-2008-1887: issue2587, r62261, r62271 > CVE-2008-4864: r66689 > > So what about > > CVE-2008-1679: claimed to be issue1179 in the CVE, but > that says it fixes CVE-2007-4965 only? the original fix for CVE-2007-4965 did miss two chunks, which are included in r65878 on the 2.5 branch. > CVE-2008-2315 this is r65334 on the 2.5 branch and r65335 on the trunk: Security patches from Apple: prevent int overflow when allocating memory this was already checked in, with an added NEWS item in 2.4.5. Moved this to 2.4.6. > In principle, this is fine with me, so go ahead. Done. ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] n.numbits: method or property?
On Wed, Nov 12, 2008 at 3:15 PM, Antoine Pitrou <[EMAIL PROTECTED]> wrote: > As for numbits, I think it should be a method, because while it's very fast > for > the current implementation of longs, it could be longer to calculate for a > long > implementation using something other than a power-of-2 base. Right: numbits is only a natural property of a *binary* integer. On the other hand, I can't realistically see Python ever adopting a non power-of-two based implementation. Mark ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] n.numbits: method or property?
On Wed, Nov 12, 2008, Mark Dickinson wrote: > On Wed, Nov 12, 2008 at 3:15 PM, Antoine Pitrou <[EMAIL PROTECTED]> wrote: >> >> As for numbits, I think it should be a method, because while it's >> very fast for the current implementation of longs, it could be longer >> to calculate for a long implementation using something other than a >> power-of-2 base. > > Right: numbits is only a natural property of a *binary* integer. > > On the other hand, I can't realistically see Python ever adopting a > non power-of-two based implementation. What do you call Decimal? ;-) -- Aahz ([EMAIL PROTECTED]) <*> http://www.pythoncraft.com/ "It is easier to optimize correct code than to correct optimized code." --Bill Harlan ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] n.numbits: method or property?
Mark Dickinson gmail.com> writes: > > Right: numbits is only a natural property of a *binary* integer. > > On the other hand, I can't realistically see Python ever adopting a > non power-of-two based implementation. No, but Python is duck-typed and alternate integer classes could adopt such an implementation while trying to respect the Python-level long API. cheers Antoine. ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] n.numbits: method or property?
Terry Reedy wrote: Math is pretty much float, not int functions. Also, it's supposed to be confining itself to wrapping the C math library. -- Greg ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] n.numbits: method or property?
[Antoine Pitrou] > No, but Python is duck-typed and alternate integer classes could adopt such an > implementation while trying to respect the Python-level long API. Good point. That makes me feel a little uneasy about adding numbits at all. Though I guess there are other parts of Python's integer API that are inherently linked to a binary representation, namely, the bit operations and shifts. And there'd be no *requirement* for alternative integer types to implement numbits (it wouldn't be part of the Integral ABC, for example). [Aahz] > What do you call Decimal? ;-) Um. A stdlib module? I guess I should have said that I can't see Python adopting a nonbinary implementation for the 'int/long' types. It *is* fun to dream about, though: there are some definite advantages to an internal decimal representation---notably, faster str <-> int conversion. And it turns out that overall performance doesn't suffer: I've coded up a Python extension module that implements decimal integers (stored internally in base 10**9) whose performance handily beats that of the current binary int/long. Mark ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] n.numbits: method or property?
Antoine Pitrou wrote: As for numbits, I think it should be a method It feels more method-like to me too, because it's something derived from the int's value rather than an independent piece of information. -- Greg ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] n.numbits: method or property?
Aahz wrote: What do you call Decimal? ;-) If you're working with decimal numbers, you're more likely to want a numdigits() method. -- Greg ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] Python 2.5.3: call for patches
>> In principle, this is fine with me, so go ahead. > > Done. Thanks for looking into these! Martin ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
[Python-Dev] How does one build Python25.chm on Windows?
I'm trying to build a Python25.chm file using the source in the Python 2.5.2 tarball. I'm not really a Windows guru so I'm at a loss of even where to begin as the Doc\README file doesn't mention how to build .chm files at all. I've done a number of web searches with things like "how to build python25.chm" but am not finding any useful hits. (Most hits tell people how to use the Python25.chm for various purposes but none on actually building it that I've seen.) Any pointers would be appreciated! -- Dave ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
Re: [Python-Dev] How does one build Python25.chm on Windows?
> I'm not really a Windows guru so I'm at a loss of even where to begin as > the Doc\README file doesn't mention how to build .chm files at all. You need to build the html files, then run prechm.py, then invoke the HTML Help Workshop. HTH, Martin ___ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
