[Python-Dev] Do you consider Python a 4GL? Why (not)?
Do you consider Python a 4GL? Why (not)? ___ 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] New FreeBSD 10.0-CURRENT buildbot
Date: Sun, 2 Jun 2013 15:12:43 +1000 From: koobs.free...@gmail.com To: python-dev@python.org Subject: [Python-Dev] New FreeBSD 10.0-CURRENT buildbot [...] koobs-freebsd10-amd64 (clang is default here) Does CPython code compiled with clang runs faster than gcc? Why did you chose clang? Any benchmarks? Any benefits? ___ 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] performance testing recommendations in devguide
Date: Wed, 29 May 2013 12:00:44 -0600 From: ericsnowcurren...@gmail.com To: python-dev@python.org Subject: [Python-Dev] performance testing recommendations in devguide The devguide doesn't have anything on performance testing that I could find. We do have a number of relatively useful resources in this space though, like pybench and (eventually) speed.python.org. I'd like to add a page to the devguide on performance testing, including an explanation of our performance goals, how to test for them, and what tools are available. Thanks Eric! I was looking for that kind of place! ;) Tools I'm aware of: * pybench (relatively limited in real-world usefulness) * timeit module (for quick comparisions) * benchmarks repo (real-world performance test suite) * speed.python.org (would omit for now) Why PyBench isn't considered reliable[1]? What do you mean by benchmarks repo? http://hg.python.org/benchmarks ? Things to test: * speed * memory (tools? tests?) Critically sensitive performance subjects * interpreter start-up time * module import overhead * attribute lookup overhead (including MRO traversal) * function call overhead * instance creation overhead * dict performance (the underlying namespace type) * tuple performance (packing/unpacking, integral container type) * string performance What would be important to say in the devguide regarding Python performance and testing it? I've just discovered insertion at the end is faster than at the start of a list. I'd like to see things like that not only in the devguide but also in the docs (http://docs.python.org/). I found it on Dan's presentation[2] but I'm not sure it isn't in the docs somewhere. What would you add/subtract from the above? Threading performance! How important is testing memory performance? How do we avoid performance regressions? Thanks! Testing and making it faster! ;) Offcourse we need a baseline (benchmarks database) to compare and check improvements. -eric [1] pybench - run the standard Python PyBench benchmark suite. This is considered an unreliable, unrepresentative benchmark; do not base decisions off it. It is included only for completeness. Source: http://hg.python.org/benchmarks/file/dccd52b95a71/README.txt [2] http://stromberg.dnsalias.org/~dstromberg/Intro-to-Python/Intro%20to%20Python%202010.pdf ___ 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] PEP 442 delegate
From: krist...@ccpgames.com To: g...@krypto.org; solip...@pitrou.net Date: Wed, 22 May 2013 19:49:31 + CC: python-dev@python.org Subject: Re: [Python-Dev] PEP 442 delegate Stackless python, already with their own special handling of GC finalization, is excited by this development ☺ K Didn't know about Stackless Python. Is it faster than CPython? I'm developing an application that takes more than 5000 active threads, sometimes up to 10. Will it benefit from Stackless Python? Can I use it for WSGI with Apache httpd? ___ 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] _PyString_InsertThousandsGrouping()
Hi guys! Can someone explain to me where in the CPython 2.7.5 source code is _PyString_InsertThousandsGrouping() implemented? I've found the following declaration in 'Objects/stringobject.c' but it just defines _Py_InsertThousandsGrouping() as _PyString_InsertThousandsGrouping(): #define _Py_InsertThousandsGrouping _PyString_InsertThousandsGrouping I'm looking for the opposite! I don't even know how that doesn't cause an error! What's the trick? Besides that I've found a lot of code inside some header files, such as 'Objects/stringlib/formatter.h'. Why did you chose that way? Thanks in advance. Carlos ___ 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] _PyString_InsertThousandsGrouping()
From: eli...@gmail.com [...] I've found the following declaration in 'Objects/stringobject.c' but it just defines _Py_InsertThousandsGrouping() as _PyString_InsertThousandsGrouping(): #define _Py_InsertThousandsGrouping _PyString_InsertThousandsGrouping I'm looking for the opposite! No, you aren't :-) #define _Py_InsertThousandsGrouping _PyString_InsertThousandsGrouping #include stringlib/localeutil.h Now look inside stringlib/localeutil.h and think what the pre-processor does with the function definition having the #define above. Eli lol I can see clearly now! :p That reminds me of Which came first, the chicken or the egg? Thank you! Somehow I got intrigued by such use... Do you know why they've put a lot of source code inside the header files? ___ 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] [RELEASED] Python 2.7.5
Just filed 17992! http://bugs.python.org/issue17992 Date: Wed, 15 May 2013 23:51:00 -0500 Subject: Re: [Python-Dev] [RELEASED] Python 2.7.5 From: benja...@python.org To: carlosnepomuc...@outlook.com CC: python-dev@python.org 2013/5/15 Carlos Nepomuceno carlosnepomuc...@outlook.com: test_asynchat still hangs! What it does? Should I care? Is there an issue filed for that? -- Regards, Benjamin ___ 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] First post
Hi guys! This is my first post on this list. I'd like have your opinion on how to safely implement WSGI on a production server. My benchmarks show no performance differences between our PHP and Python environments. I'm using mod_wsgi v3.4 with Apache 2.4. Is that ok or can it get faster? Thanks in advance. Regards, Carlos ___ 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
