Mailman 3 August 2012 - Python-announce-list

[RELEASED] Python 3.3.0 release candidate 1
by Georg Brandl Aug. 25, 2012

Aug. 25, 2012

On behalf of the Python development team, I'm delighted to announce the first release candidate of Python 3.3.0. This is a preview release, and its use is not recommended in production settings. Python 3.3 includes a range of improvements of the 3.x series, as well as easier porting between 2.x and 3.x. Major new features and changes in the 3.3 release series are: * PEP 380, syntax for delegating to a subgenerator ("yield from") * PEP 393, flexible string representation (doing away with the distinction between "wide" and "narrow" Unicode builds) * A C implementation of the "decimal" module, with up to 80x speedup for decimal-heavy applications * The import system (__import__) now based on importlib by default * The new "lzma" module with LZMA/XZ support * PEP 397, a Python launcher for Windows * PEP 405, virtual environment support in core * PEP 420, namespace package support * PEP 3151, reworking the OS and IO exception hierarchy * PEP 3155, qualified name for classes and functions * PEP 409, suppressing exception context * PEP 414, explicit Unicode literals to help with porting * PEP 418, extended platform-independent clocks in the "time" module * PEP 412, a new key-sharing dictionary implementation that significantly saves memory for object-oriented code * PEP 362, the function-signature object * The new "faulthandler" module that helps diagnosing crashes * The new "unittest.mock" module * The new "ipaddress" module * The "sys.implementation" attribute * A policy framework for the email package, with a provisional (see PEP 411) policy that adds much improved unicode support for email header parsing * A "collections.ChainMap" class for linking mappings to a single unit * Wrappers for many more POSIX functions in the "os" and "signal" modules, as well as other useful functions such as "sendfile()" * Hash randomization, introduced in earlier bugfix releases, is now switched on by default In total, almost 500 API items are new or improved in Python 3.3. For a more extensive list of changes in 3.3.0, see http://docs.python.org/3.3/whatsnew/3.3.html To download Python 3.3.0 visit: http://www.python.org/download/releases/3.3.0/ Please consider trying Python 3.3.0 with your code and reporting any bugs you may notice to: http://bugs.python.org/ Enjoy! -- Georg Brandl, Release Manager georg at python.org (on behalf of the entire python-dev team and 3.3's contributors)

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PyCon Ireland 2012 (13th - 14th Oct) - Dublin, Ireland
by Vicky Lee - Python Ireland Aug. 22, 2012

Aug. 22, 2012

Hi All, What: PyCon Ireland 2012 Where: Radisson Blu Royal Hotel, Dublin, Ireland When: Sat 13th October - Sun 14th October Tickets are still on sale at: http://python.ie/pycon/2012/registration/ Speakers and talks are now available: http://python.ie/pycon/2012/conference/#talks We are also proud to announce one of our keynote speakers, Alex Bradbury, who will be talking about Raspberry Pi. We would also like to put forward a call to volunteers to help us with sprints, workshops and tutorials. Companies interested in sponsoring PyCon Ireland, please register at: http://python.ie/pycon/2012/callfor/#sponsors In other news, raffle prizes include a pair Raspberry Pi for two lucky student delegates (thanks to Vishal Vatsa and Michael Twomey). Other prizes will be a surprise. #JustSaying Further enquiries, please contact pycon(a)python.ie. Cheers, /// Vicky Twomey-Lee (PyCon Ireland 2012 <http://python.ie/pycon/2012/>)

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LauncherPosta: a launcher, a real launcher.
by Facundo Batista Aug. 21, 2012

Aug. 21, 2012

LauncherPosta is a launcher. A real launcher. One that lets you launch programs. This program basically puts an icon in the systray where you can have a fully configurable menu to launch the programs that you most use, only two clicks away, anytime. Website: http://launcherposta.taniquetil.com.ar/ This is the first release, which allows you to: - Puts an icon in the systray to be used as main interface - Automatically fixes unity config to make it allow the icon to be in the systray - Clicking in the systray icon will show you Edit, About and Quit options - Edit allows the user to add any options she/he wants, delete or change them, and change their order in the systray's icon menu - Options are composed by an optional icon, a description, and the command to be executed - Clicking in an option in the systray's icon menu will execute the command Easiest way to install it, the .deb: http://launchpad.net/launcherposta/trunk/0.6/+download/launcherposta-0.6.deb To be automatically updated, install the PPA: sudo add-apt-repository ppa:facundo/launcherposta sudo apt-get update sudo apt-get install launcherposta Also, you have the tarball: http://launchpad.net/launcherposta/trunk/0.6/+download/launcherposta-0.6.ta… Finally, for the same price, you can get it from PyPI: sudo easy_install launcherposta Enjoy it. -- . Facundo Blog: http://www.taniquetil.com.ar/plog/ PyAr: http://www.python.org/ar/ Twitter: @facundobatista

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[ANN] carray 0.5 released
by Francesc Alted Aug. 21, 2012

Aug. 21, 2012

Announcing carray 0.5 ===================== What's new ---------- carray 0.5 supports completely transparent storage on-disk in addition to memory. That means that everything that can be done with an in-memory container can be done using the disk instead. The advantages of a disk-based container is that your addressable space is much larger than just your available memory. Also, as carray is based on a chunked and compressed data layout based on the super-fast Blosc compression library, and the different cache levels existing in both modern operating systems and the internal carray machinery, the data access speed is very good. The format chosen for the persistence layer is based on the 'bloscpack' library (thanks to Valentin Haenel for his inspiration) and described in 'persistence.rst', although not everything has been implemented yet. You may want to contribute by proposing enhancements to it. See: https://github.com/FrancescAlted/carray/wiki/PersistenceProposal CAVEAT: The bloscpack format is still evolving, so don't trust on forward compatibility of the format, at least until 1.0, where the internal format will be declared frozen. For more detailed info, see the release notes in: https://github.com/FrancescAlted/carray/wiki/Release-0.5 What it is ---------- carray is a chunked container for numerical data. Chunking allows for efficient enlarging/shrinking of data container. In addition, it can also be compressed for reducing memory/disk needs. The compression process is carried out internally by Blosc, a high-performance compressor that is optimized for binary data. carray can use numexpr internally so as to accelerate many vector and query operations (although it can use pure NumPy for doing so too). numexpr can use optimize the memory usage and use several cores for doing the computations, so it is blazing fast. Moreover, with the introduction of a carray/ctable disk-based container (in version 0.5), it can be used for seamlessly performing out-of-core computations. carray comes with an exhaustive test suite and fully supports both 32-bit and 64-bit platforms. Also, it is typically tested on both UNIX and Windows operating systems. Resources --------- Visit the main carray site repository at: http://github.com/FrancescAlted/carray You can download a source package from: http://carray.pytables.org/download Manual: http://carray.pytables.org/docs/manual Home of Blosc compressor: http://blosc.pytables.org User's mail list: carray(a)googlegroups.com http://groups.google.com/group/carray ---- Enjoy! -- Francesc Alted

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ANN: eGenix mxODBC Connect - Python Database Interface 2.0.0
by eGenix Team: M.-A. Lemburg Aug. 20, 2012

Aug. 20, 2012

________________________________________________________________________ ANNOUNCING eGenix.com mxODBC Connect Python Database Interface Version 2.0.0 mxODBC Connect is our commercially supported client-server product for connecting Python applications to relational databases in a truly cross-platform way. This announcement is also available on our web-site for online reading: http://www.egenix.com/company/news/eGenix-mxODBC-Connect-2.0.0-GA.html ________________________________________________________________________ INTRODUCTION The mxODBC Connect Database Interface for Python allows users to easily connect Python applications to all major databases on the market today in a highly portable, convenient and secure way. Python Database Connectivity the Easy Way Unlike our mxODBC Python extension, mxODBC Connect is designed as client-server application, so you no longer need to find production quality ODBC drivers for all the platforms you target with your Python application. Instead you use an easy to install Python client library which connects directly to the mxODBC Connect database server over the network. This makes mxODBC Connect a great basis for writing cross-platform multi-tier database applications and utilities in Python, especially if you run applications that need to communicate with databases such as MS SQL Server and MS Access, Oracle Database, IBM DB2 and Informix, Sybase ASE and Sybase Anywhere, MySQL, PostgreSQL, SAP MaxDB and many more, that run on Windows or Linux machines. Ideal for Database Driven Client Applications By removing the need to install and configure ODBC drivers on the client side and dealing with complicated network setups for each set of drivers, mxODBC Connect greatly simplifies deployment of database driven client applications, while at the same time making the network communication between client and database server more efficient and more secure. For more information, please have a look at the mxODBC Connect product page, in particular, the full list of available features. For more information, please see the product page: http://www.egenix.com/products/python/mxODBCConnect/ ________________________________________________________________________ NEWS mxODBC Connect 2.0.0 is a new major release of our successful mxODBC Connect product. Enhanced API * mxODBC Connect Server now uses mxODBC 3.2 internally and makes its API available in the mxODBC Connect Client. This is a major step forward from the mxODBC 3.0 version used in mxODBC Connect Server 1.0. * mxODBC Connect Client comes with all the mxODBC enhancements, including: - connection and cursor objects can be used as context managers - adjustable parameter styles (qmark or named) - connection .autocommit attribute to easily switch on autocommit - adjustable timestamp resolution - new possibilities to set connection and cursor options to adjust the ODBC objects to your application needs, e.g. set a connection read-only or set a query timeout - adjustable decimal, datetime and string formats - adjustable warning format to be able to handle server warnings without client interaction - greatly improved result set scrolling support - Unicode support for all catalog methods - Access to additional result set meta data via cursor.getcolattribute() Updated Compatibility * The server now features all the ODBC driver compatibility enhancements provided by mxODBC 3.2, including improved and updated support for MS SQL Server Native Client, Oracle Instant Client, Sybase ASE, IBM DB2, Teradata and Netezza. * Native Windows x64 builds with signed executables and a tray app rewritten in C are available for Windows 2008R2, Vista and 7 x64, so you can benefit from better performance, fewer UAC dialogs and smaller memory footprint. Asynchronous Execution * mxODBC Connect Client now integrates directly with gevent, allowing client applications to run asynchronous tasks while performing remote database queries. Better Integration * mxODBC Connect now uses the official IANA registered port 6632 for both plain text and SSL-encrypted communication. * mxODBC Connect Client now allows selecting the used SSL module from two available options: Python standard lib ssl module and pyOpenSSL. For the full set of changes, please check the mxODBC Connect change log. http://www.egenix.com/products/python/mxODBCConnect/changelog.html ________________________________________________________________________ UPGRADING You are encouraged to upgrade to this latest mxODBC Connect release. When upgrading, please always upgrade both the server and the client installations to the same version - even for patch level releases. Customers who have purchased mxODBC Connect 2.0 licenses can request 20% discount coupons for upgrade purchases. Please contact the eGenix.com Sales Team (sales(a)egenix.com) with your existing license serials for details. Users of our stand-alone mxODBC product will have to purchase new licenses from our online shop in order to use mxODBC Connect. You can request 30-day evaluation licenses by visiting our web-site or writing to sales(a)egenix.com, stating your name (or the name of the company) and the number of eval licenses that you need. http://www.egenix.com/products/python/mxODBCConnect/#Evaluation ________________________________________________________________________ DOWNLOADS The download archives as well as instructions for installation and configuration of the product can be found on the product page: http://www.egenix.com/products/python/mxODBCConnect/ If you want to try the package, jump straight to the download instructions: https://cms.egenix.com/products/python/mxODBCConnect/#Download Fully functional evaluation licenses for the mxODBC Connect Server are available free of charge: http://www.egenix.com/products/python/mxODBCConnect/#Evaluation mxODBC Connect Client is always free of charge. _______________________________________________________________________ SUPPORT Commercial support for this product is available from eGenix.com. Please see http://www.egenix.com/services/support/ for details about our support offerings. _______________________________________________________________________ INFORMATION About Python (http://www.python.org/): Python is an object-oriented Open Source programming language which runs on all modern platforms. By integrating ease-of-use, clarity in coding, enterprise application connectivity and rapid application design, Python establishes an ideal programming platform for today's IT challenges. About eGenix (http://www.egenix.com/): eGenix is a software project, consulting and product company focusing on expert services and professional quality products for companies, Python users and developers. Enjoy, -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Aug 20 2012) >>> Python/Zope Consulting and Support ... http://www.egenix.com/ >>> mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/ >>> mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/ ________________________________________________________________________ 2012-08-25: FrOSCon, St. Augustin, Germany ... 5 days to go ::: Try our new mxODBC.Connect Python Database Interface for free ! :::: eGenix.com Software, Skills and Services GmbH Pastor-Loeh-Str.48 D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg Registered at Amtsgericht Duesseldorf: HRB 46611 http://www.egenix.com/company/contact/

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ANN: Advanced Python Training at PyCon PL
by Mike Müller Aug. 19, 2012

Aug. 19, 2012

Advanced Python Training at PyCon PL ------------------------------------ You have intermediate Python skills and would like learn more about: * Comprehensions * Decorators * Context managers * Descriptors * Metaclasses and * Patterns? Than you should attend this two-day training that provides a systematic coverage of these topics. Useful code samples and exercises provide hands-on learning. We offered this training at EuroPython 2012 and got very good feedback. Some of the participant understood much more of the complex topics than they anticipated. Date: September 17th and 18th, 2012 Location: PyCon PL venue, Mąchocice, Poland More information: http://pl.pycon.org/2012/en/training This is an open course, but PyCon PL attendees will get a considerable discount. Open courses 2012 and 2013 (till June) -------------------------------------- 17.09.-18.09.2012 (Mąchocice, Poland) Advanced Python at PyCon PL (English) http://pl.pycon.org/2012/en/training 15.10.-17.10.2012 (Leipzig) Introduction to Django (English) http://python-academy.com/courses/django_course_introduction.html 18.10.-20.10.2012 (Leipzig) Advanced Django (English) http://python-academy.com/courses/django_course_advanced.html 27.10.2012 (Leipzig) SQLAlchemy (English) http://python-academy.com/courses/specialtopics/python_course_sqlalchemy.ht… 28.10.2012 (Leipzig) Camelot (English) http://python-academy.com/courses/specialtopics/python_course_camelot.html 12.-14.11.2012 (Antwerp, Belgium) Python for Programmers (English) http://python-academy.com/courses/python_course_programmers.htm 15.11.2012 (Antwerp, Belgium) SQLAlchemy (English) http://python-academy.com/courses/specialtopics/python_course_sqlalchemy.ht… 16.11.2012 (Antwerp, Belgium) Camelot (English) http://python-academy.com/courses/specialtopics/python_course_camelot.html 10.12.-12.12.2012 (Leipzig) Python für Programmierer (German) http://www.python-academy.de/Kurse/python_kurs_programmierer.html 13.12.-15.12.2012 (Leipzig) Python für Wissenschaftler und Ingenieure (German) http://www.python-academy.de/Kurse/python_kurs_wissenschaftler.html 25.01.-27.01.2013 (Leipzig) Advanced Python (English) http://python-academy.com/courses/specialtopics/python_course_advanced.html 28.01.-30.01.2013 (Leipzig) High-Performance Computation with Python (English) http://python-academy.com/courses/python_course_high_performance.html one day each (can be booked separately) - Optimizing of Python Programs http://python-academy.com/courses/specialtopics/python_optimizing.html - Python Extensions with Other Languages http://python-academy.com/courses/specialtopics/python_extensions.html - Fast Code with the Cython Compiler http://python-academy.com/courses/specialtopics/python_course_cython.html 31.01.-01.02.2013 (Leipzig) High Performance XML with Python (English) http://python-academy.com/courses/specialtopics/python_course_xml.html 04.03.-08.03.2013 (Chicago, USA) Python for Scientists and Engineers (English) http://www.dabeaz.com/chicago/science.html 15.04.-17.04.2013 (Leipzig) Python für Programmierer (German) http://www.python-academy.de/Kurse/python_kurs_programmierer.html 18.04.-20.04.2013 (Leipzig) Python für Wissenschaftler und Ingenieure (German) http://www.python-academy.de/Kurse/python_kurs_wissenschaftler.html 10.06.-12.06.2013 (Leipzig) Python for Scientists and Engineers (English) http://python-academy.com/courses/python_course_scientists.html 13.06.2013 (Leipzig) Fast Code with the Cython Compiler (English) http://python-academy.com/courses/specialtopics/python_course_cython.html 14.06.2013 (Leipzig) Fast NumPy Processing with Cython (English) http://python-academy.com/courses/specialtopics/python_course_numpy_cython.…

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pyNVML - GPU Monitoring and Management - Release Candidate
by Robert Alexander Aug. 17, 2012

Aug. 17, 2012

I'm pleased to announce the release candidate of pyNVML 4.304: Python Bindings for the NVIDIA Management Library. The production version of this package will be released in the next few weeks. You will need the CUDA 5.0 RC drivers to use this package: http://developer.nvidia.com/cuda/cuda-pre-production pyNVML provides programmatic access to static information and monitoring data for NVIDIA GPUs, as well as management capabilities. It exposes the functionality of the NVML library. See http://developer.nvidia.com/nvidia-management-library-nvml for more information about NVML. The pyNVML download package and its documentation can be found at: http://pypi.python.org/pypi/nvidia-ml-py/ http://packages.python.org/nvidia-ml-py/ For the previous stable release, see: http://pypi.python.org/pypi/nvidia-ml-py/3.295.00 pyNVML is currently used to report GPU information in Ganglia. Check it out at http://developer.nvidia.com/ganglia-monitoring-system Requires Python 2.5, or an earlier version with the ctypes module. Released under the BSD license. Robert Alexander NVIDIA Tesla Software Engineer ----------------------------------------------------------------------------------- This email message is for the sole use of the intended recipient(s) and may contain confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. -----------------------------------------------------------------------------------

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FPDF for python v1.7: unicode ttf support, py3k, pep8, png alpha channel and more!
by Mariano Reingart Aug. 15, 2012

Aug. 15, 2012

I'm pleased to announce the 1.7 release of FPDF for python (pyfpdf) library, a port of the "Free-PDF" generator originally developed in PHP: https://code.google.com/p/pyfpdf/ Changelog: * added UTF-8 TTF font subset embedding * experimental Py3K compilance * added PNG alpha channel support * added GIF support * partial PEP8 guideline adjustments * added proper setup.py packaging * minor bugfixes and enhancements For more information see: https://code.google.com/p/pyfpdf/wiki/Unicode https://code.google.com/p/pyfpdf/wiki/Python3 https://code.google.com/p/pyfpdf/wiki/FAQ http://code.google.com/p/pyfpdf/wiki/ReferenceManual http://code.google.com/p/pyfpdf/wiki/Tutorial (also available in Spanish) Please try out this new release and let me know if you experience any problem by filing issues on the project site. Thanks in advance. Mariano Reingart http://www.sistemasagiles.com.ar http://reingart.blogspot.com

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Jython 2.5.3 final released!
by fwierzbicki＠gmail.com Aug. 14, 2012

Aug. 14, 2012

The announcement and download links are here: http://fwierzbicki.blogspot.com/2012/08/jython-253-final-released.html -Frank

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ANN: psutil 0.6.0 released
by Giampaolo Rodolà Aug. 13, 2012

Aug. 13, 2012

Hi folks, I'm pleased to announce the 0.6.0 release of psutil: http://code.google.com/p/psutil/ This is one of the best releases so far as it addresses two important issues: system memory functions management and permission errors occurring on Windows and OSX. === Memory functions === psutil.phymem_usage() and psutil.virtmem_usage() are deprecated. Instead we now have psutil.virtual_memory() and psutil.swap_memory(), which should provide all the necessary pieces to monitor the actual system memory usage, both physical and swap/disk related. The refactoring was modeled after Zabbix, see: http://code.google.com/p/psutil/issues/detail?id=311 http://blog.zabbix.com/when-alexei-isnt-looking/#vm.memory.size http://www.zabbix.com/documentation/2.0/manual/appendix/items/vm.memory.siz… If you don't want to read how and why I did that, the bottom line is: if you want to monitor actual system memory usage in a cross platform fashion use: >>> psutil.virtual_memory().available === No more AccessDenied exceptions when querying processes === On Windows and OSX the Process methods below were always raising AccessDenied for any process owned by another user: OSX - name - get_memory_info() - get_memory_percent() - get_cpu_times() - get_cpu_percent() - get_num_threads() WINDOWS - create_time - get_children() - get_cpu_times() - get_cpu_percent() - get_memory_info() - get_memory_percent() - get_num_handles() - get_io_counters() Especially on OSX this made psutil basically unusable as a limited user, even for determining basic process information such as CPU percent or memory usage. Now this is no longer the case. For further details see: http://code.google.com/p/psutil/issues/detail?id=297 http://code.google.com/p/psutil/issues/detail?id=303 === Other major enhancements === - per-process extended memory stats. - per-process number of voluntary and involuntary context switches. - per-process connections: added UNIX sockets support. - (BSD) Process.get_connections() rewritten in C and no longer requiring lsof. - (OSX) added support for process cwd - psutil.network_io_counters() now provides the number of in/out packets dropped and with errors. - new example scripts: example/meminfo.py example/free.py example/netstat.py example/pmap.py === New features by example === >>> import psutil, os >>> p = psutil.Process(os.getpid()) >>> >>> p.get_num_ctx_switches() amount(voluntary=78, involuntary=19) >>> >>> p.get_ext_memory_info() meminfo(rss=9662464, vms=49192960, shared=3612672, text=2564096, lib=0, data=5754880, dirty=0) >>> >>> p.get_connections(kind='unix') [connection(fd=8, family=1, type=1, local_address='/tmp/unix_socket.sock', remote_address=None, status='')] >>> >>> >>> psutil.virtual_memory() vmem(total=8374149120L, available=2081050624L, percent=75.1, used=8074080256L, free=300068864L, active=3294920704, inactive=1361616896, buffers=529895424L, cached=1251086336) >>> >>> psutil.swap_memory() swap(total=2097147904L, used=296128512L, free=1801019392L, percent=14.1, sin=304193536, sout=677842944) >>> === Compatitility notes === 0.6.0 version does not introduce any backward incompatibility. Nevertheless it introduces some deprecations warnings: - psutil.phymem_usage() is deprecated in favor of psutil.virtual_memory() - psutil.virmem_usage() is deprecated in favor of psutil.swap_memory() - psutil.cached_phymem() is deprecated in favor of psutil.virtual_memory().cached - psutil.phymem_buffers() is deprecated in favor of psutil.virtual_memory().buffers The deprecated functions will be removed in next 1.0.0 version. === Links === * Home page: http://code.google.com/p/psutil * Source tarball: http://psutil.googlecode.com/files/psutil-0.6.0.tar.gz * Api Reference: http://code.google.com/p/psutil/wiki/Documentation Please try out this new release and let me know if you experience any problem by filing issues on the bug tracker. Thanks in advance. --- Giampaolo Rodola' http://code.google.com/p/pyftpdlib/ http://code.google.com/p/psutil/ http://code.google.com/p/pysendfile/

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