On Sun, Mar 27, 2011 at 10:53 PM, Nick Coghlan ncogh...@gmail.com wrote:
On Mon, Mar 28, 2011 at 2:11 PM, Daniel Stutzbach stutzb...@google.com
wrote:
Is there a good use-case for the func argument?
The examples that Raymond gives in the docs (cumulative
multiplication, running min/max
arbitrary
functions.
Thanks. I had not been thinking along numeric lines. I can see how these
would be useful for working with matrices, vectors, and similar constructs.
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give it all of the power of reduce().
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it because it
allows you to shoot yourself in the foot.
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: s.split(',')[0]) # Sort by the shortstring
I think the use cases are pretty narrow where there's plenty of memory for
storing the list but not enough to store two copies.
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loop
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-branch
git diff master...experimental-branch
The idea is to pull their remote branch but not merge it, which will create
multiple heads locally. Then find the common ancestor of my regular local
head and the new head, and diff the ancestor with the new head.
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in
git; I assume it's easy in hg. I did some searching but was unable to come
up with the right incantation.
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if they have addressed your earlier
comments or not.
You can also just tweak a few things and push the changes back to them.
They can easily merge your changes with any changes they've made in the
meantime (which is hard to do if you're pushing patch files around).
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that
shouldn't be tracked.
If the goal is to prevent something from being committed, shouldn't the
check go in a pre-commit hook instead?
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create
two disconnected subgraphs whose nodes have the same branch
name.
That's not completely correct. You *can* do that.
Can we create a hook on the server to reject changesets like that?
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is that people may create named branches locally
as part of their own workflow, then mistakenly push those branches
instead of collapsing back to a single commit against the relevant
line of development.
+1
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is a strict subset
of the 2.7 branch's history, isn't it?
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On Sat, Feb 26, 2011 at 8:44 AM, Antoine Pitrou solip...@pitrou.net wrote:
Le samedi 26 février 2011 à 08:38 -0800, Daniel Stutzbach a écrit :
Can we just get rid of trunk altogether? It's history is a strict
subset of the 2.7 branch's history, isn't it?
Named branches are exclusive
to git), and named branches.
So a named branch can contain more than one branch.
Were there reasons for going with named branches over bookmarks? PEP 385
discusses only cloning and named branches. I'm just curious, not trying to
start a long discussion. :-)
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and experience so that designing a async API is not
as hard for you, please run with it. :-) Personally, I would love to see
asyncore deprecated in favor of something better.
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discussion before PyCon 2009, but not much came of it:
http://mail.python.org/pipermail/python-dev/2009-March/086678.html
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On Fri, Feb 11, 2011 at 8:06 AM, Guido van Rossum gu...@python.org wrote:
And finally remember that asyncore is the most monkey-patched module
in the world. :-)
I propose that in Python 3.3 we rename asyncore to barrel_of_monkeys.
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On Fri, Feb 11, 2011 at 10:36 AM, Antoine Pitrou solip...@pitrou.netwrote:
Daniel Stutzbach stutzb...@google.com wrote:
I propose that in Python 3.3 we rename asyncore to barrel_of_monkeys.
Would that be a Mapping or a Sequence?
Before or after monkey-patching? :-)
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+++ python/branches/py3k/Doc/whatsnew/3.2.rst Mon Jan 10 22:26:49 2011
@@ -553,7 +553,7 @@
range(0, 100, 2)[0:5]
range(0, 10, 2)
- (Contributed by Daniel Stutzback in :issue:`9213` and by Alexander
Belopolsky
+ (Contributed by Daniel Stutzbach in :issue:`9213` and by Alexander
-prototypes' ./python -E ./setup.py build
make: *** [sharedmods] Error 139
Does that version of gcc emit any warnings during compilation?
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the code remains the same no matter if the dict has changed or not.
I have had similar ideas in the past but have never found time to explore
them. The same mechanism could also be used to speed up attribute access on
objects.
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=markup
Do you have an old unicodeobject.h somehow?
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().
[4]:
http://www.google.com/codesearch?hl=ensa=Nq=BufferedIOBase++lang:pythonct=rrcs_r=lang:python
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)
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to Mercurial, so svnmerge would not be helpful for
much longer. On the plus side, since Mercurial is a Distributed Version
Control System, if you setup an unofficial continuation of Python 2 on the
host of your choice, it will be easy for you to pull patches from py3k.
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On Thu, Oct 14, 2010 at 12:38 PM, barry.warsaw
python-check...@python.orgwrote:
-# Generated by GNU Autoconf 2.65 for python 3.2.
+# Generated by GNU Autoconf 2.67 for python 3.2.
Was the change in autoconf versions intentional and/or is it a problem?
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On Sat, Oct 2, 2010 at 3:55 PM, Martin v. Löwis mar...@v.loewis.dewrote:
I'll have to come up with a better way to determine the branch
which a patch was created on.
That would also be helpful for those of us using DVCS software to talk to
the svn server. :-)
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, and index
tuple, range, and str types all register as following the Sequence ABC.
list and bytearray types register as following the MutableSequence ABC,
which is a subclass of the Sequence ABC.
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tolerate ;) ) additional review of
their code.
The hard part is encouraging contributors to find the time and motivation to
thoroughly review code that they aren't personally interested in (and
perhaps not even familiar with).
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)
Obviously there would be many non-trivial details to work out. I'm just
brainstorming.
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about the opposite approach: make a Python-specific version of upload.py
that lets the user attach the patch to an issue with an optional message?
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and then runs hooks. Obviously, it would not be
possible to write hooks that reject changesets, but it would be possible to
write hooks that send email or notify buildbots.
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tracking/untracking based on contents would use some other
new API (which would be non-public in 2.7.x).
Where would the extra state information be stored? (to distinguish untracked
and untracked-and-keep-it-that-way)
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, plus there
are multiple functions that want to talk to the cache.
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On Thu, Sep 2, 2010 at 6:26 PM, Victor Stinner victor.stin...@haypocalc.com
wrote:
But I didn't found any doc for other Py_UNICODE_str*()
functions in Doc/c-api/*.rst.
http://bugs.python.org/issue8649 - Py_UNICODE_* functions are undocumented
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version of the C library.
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related to sets or set ABCs unless you have signed off
on it in some way. Perhaps in time there will be some piece of Python
that I've modified so heavily that I become ipso facto the primary
maintainer, but I'm in no hurry.
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?
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and did not see the shared folder
icon in Explorer.
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http://bugs.python.org/issue2521 - ABC caches should use weak refs
http://bugs.python.org/issue808164 - socket.close() doesn't play well
with __del__
Many more in the pipeline :-)
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to take a profililng snapshot of a running application.
+1
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/2010-June/100583.html
On the flip side, a fully enumerated ABI signature could be used to identify
(in)compatible binary eggs, which is basically impossible now.
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:
$ hg clone pytrunk-upstream pytrunk-work
$ ./configure make
My question is basically the same as Terry Reedy's, but I'm going to phrase
it a bit differently:
This is perhaps a naive question, but why do you create a second local clone
instead of just creating a branch?
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way
around with a bit of work.
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builds, Unicode width (see issue8654), and probably several other
./configure options.
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the time to produce patches once in awhile, but when I have the
time I usually produce more than one. Assigning bugs to myself will
increase my motivation to write patches, as I will feel that I've made a
commitment to fixing them.
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of the
different fields in the bug tracker?
I've read http://www.python.org/dev/workflow/, but it doesn't cover
everything.
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the Resolution or Status fields.
For the Keywords field, the page only documents the easy keyword.
Also, some of the headings in the page are enclosed in square brackets,
while others are not. It's not clear to me what the brackets are intended
to designate.
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On Sat, Apr 17, 2010 at 12:17 PM, Victor Stinner
victor.stin...@haypocalc.com wrote:
http://bugs.python.org/ displays Service Temporarily Unavailable. Is it
normal?
It's working fine for me.
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the slower PyObject_ functions.
Consequently, validating **kwds should be cheap.
I don't know if the the current validating of **kwds with Python functions
already leverages that hack or not.
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On Fri, Apr 16, 2010 at 4:51 PM, Benjamin Peterson benja...@python.orgwrote:
2010/4/16 Daniel Stutzbach dan...@stutzbachenterprises.com:
IIRC, there's a performance hack in dictobject.c that keeps track of
whether
all of the keys are strings or not. The hack is designed so that lookup
are ahead of the current
dict implementation and where you are behind.
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, socket.SO_KEEPALIVE, 1)
Most non-trivial applications use select() or poll() to avoid blocking calls
and do their own timeout-checking at the application layer, so they don't
need KEEPALIVE.
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to backport the fix for this
reference leak:
http://bugs.python.org/issue2521
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On Mon, Mar 29, 2010 at 2:21 PM, Michael Foord mich...@voidspace.org.ukwrote:
It should be possible to fix it with a WeakKeyDictionary instead of
WeakSet.
True. I should have said Backporting WeakSet would make it *easier* to
backport the fix ... :-)
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approach as well, assuming interactiveness can be
computed cheaply.
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instance is then free to do so.
+1
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loop is running underneath (be it TCL, GTK, or just poll()).
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On Fri, Mar 5, 2010 at 12:03 AM, Brian Quinlan br...@sweetapp.com wrote:
import futures
+1 on the idea, -1 on the name. It's too similar to from __future__ import
Also, the PEP should probably link to the discussions on stdlib-sig?
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Future.
Why not name your module concurrent? That would eliminate the confusion
with from __future__. I don't see a problem with keeping the class name.
Plus, a concurrent module might be useful for things other than Futures,
in the future. ;-)
Just my 0.02 cents,
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to implement it as
a patch to Unladen Swallow, CPython trunk, or CPython py3k?
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On Wed, Mar 3, 2010 at 3:29 PM, Benjamin Peterson benja...@python.orgwrote:
2010/3/3 Daniel Stutzbach dan...@stutzbachenterprises.com:
I think I see a way to dramatically speed up PyObject_RichCompareBool
when
comparing immutable, built-in, non-container objects (int, float, str,
etc
in understanding that it will be a while before the Unladen
Swallow benchmarks can support Python 3, right?
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In CPython, is it safe to cache function pointers that are in type objects?
For example, if I know that some_type-tp_richcompare is non-NULL, and I
call it (which may execute arbitrary user code), can I assume that
some_type-tp_richcompare is still non-NULL?
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functions for speed.
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a reply to this thread? I'd like to check it out.
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On Sat, Jan 30, 2010 at 8:21 PM, Vitor Bosshard algor...@gmail.com wrote:
Putting the files into a separate dir also makes it much harder to
work with external tools; e.g. VCSes already ignore .pyc and .pyo
files, but not unknown directories.
Can't a VCS be configured to ignore a .pyr
list, you can just erase it;
no need to recopy the whole list.
I don't think your analogy works, unless you recopy your to-do lists
whenever you complete a task in the middle of the list. ;-)
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On Wed, Jan 27, 2010 at 9:55 AM, Steve Howell showel...@yahoo.com wrote:
Fair enough, but that's still wasteful of memory, keeping around a bunch of
None elements because you can't inexpensively delete them.
Even if there are many references to it, there is only one None element.
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to regularly allocate and deallocate memory for an
approximately-fixed-length FIFO queue (which Steve's list will need to do).
Raymond's objections are here:
http://mail.python.org/pipermail/python-dev/2007-November/075244.html
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of the fundamental data
structures until the Unladen Swallow patch lands (assuming it lands).
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suite?
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will always be exactly the
right size.
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that
the list itself gets garbage collected.
FWIW, for a long-running FIFO queue, it's critical to release some of the
memory along the way, otherwise the amount of wasted memory is unbounded.
Good luck :)
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.
That strikes me as a *predictable* long pause.
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.
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the n/2-th removal,
when we have checked 1 + 2 + 3 + ... + n/2 = O(n**2) slots for n/2 removals
(or amortized O(n) per removal). It's too late for shrinking to save us;
we've already performed too much work.
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the table for non-empty entries.
(the above assumes a good hash function with few collisions, of course)
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check sys.version_info.
In a nutshell, I don't think you need two branches to support an extension
module on Python 2 and Python 3.
YMMV.
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before releasing them.
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to relinquish the remainder of its time
slice to any other thread of equal priority that is ready to run.
(this is not to say that I think the solution with Sleep is worthwhile,
though...)
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.
It does. If I recall correctly, in addition to Visual Studio Express, I
also needed the Windows SDK (which is also free as in beer).
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time budget is merely paused during I/O rather than
reset, then a thread making frequent (but short) I/O requests cannot starve
the system.
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);
test_noconst(noconst_var);
test_noconst(const_var); // generates a warning
return 0;
}
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.
(particularly when I didn't *intend* to do a million-digits calculation...
;) )
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On Sun, Oct 18, 2009 at 5:46 PM, Antoine Pitrou solip...@pitrou.net wrote:
Daniel Stutzbach daniel at stutzbachenterprises.com writes:
I sometimes do million-digits calculations that I want to interrupt using
Control-C.(particularly when I didn't *intend* to do a million-digits
calculation
to None. It zaps them to weakrefs first, which means that
globals are more likely to be valid during __del__, but it still cannot make
any guarantees and referencing globals from __del__ is still a bad idea. Is
that a correct synopsis?
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a global variable in __del__ will be 100% safe?
(not just likely)
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collector
3. Replace globals in any remaining modules with None
4. Run the garbage collector
Is it possible for a __del__ method to be called in step 4 or not? I am
still unclear on this point. :-)
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Daniel Stutzbach, Ph.D.
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postpone the resize if there are active iterators,
but I don't think there's a clean way to track the iterators.
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President, Stutzbach Enterprises, LLC http://stutzbachenterprises.com
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?
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President, Stutzbach Enterprises, LLC http://stutzbachenterprises.com
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focused too much on the details of ipaddr
(and the false dichotomy of ipaddr versus nothing), without properly
tackling the question of What use-cases for IP addresses are sufficiently
universal* that they belong in the standard library?
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Daniel Stutzbach, Ph.D.
President, Stutzbach Enterprises, LLC
, it
is a little counter-intuitive for objects to compare equal yet have
different properties. I don't think this is a good compromise.
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Daniel Stutzbach, Ph.D.
President, Stutzbach Enterprises, LLC http://stutzbachenterprises.com
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-contiguous
netmasks are valid, and is dated 2008. Earlier RFCs (950 and 1219)
give them as valid but discouraged.
That's a draft for RFC 5177. In the RFC, all references to non-contiguous
subnets have been removed.
http://tools.ietf.org/html/rfc5177
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Daniel Stutzbach, Ph.D.
President, Stutzbach
in Python 2.6:
Python 2.6.2 (r262:71600, Apr 15 2009, 07:20:39)
[GCC 3.4.4 (cygming special, gdc 0.12, using dmd 0.125)] on cygwin
Type help, copyright, credits or license for more information.
import fractions
fractions.Fraction(6,4)
Fraction(3, 2)
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Daniel Stutzbach, Ph.D.
President, Stutzbach
, such
scenarios are no longer operationally relevant.
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Daniel Stutzbach, Ph.D.
President, Stutzbach Enterprises, LLC http://stutzbachenterprises.com
The plumage don't enter into it. It's stone dead.
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