Mailman 3 April 2013 - Python-announce-list

ANN: rom 0.10 - Redis object mapper for Python
by Josiah Carlson 22 Apr '13

22 Apr '13

Hey everyone, I know, it's been several years since I announced anything on these lists, but I suspect that some of you may have uses for my new package, so here you go. The "rom" package is a Redis object mapper for Python. It sports an interface similar to Django's ORM, SQLAlchemy + Elixir, or Appengine's datastore. This is the initial release, so there may be some rough edges. I've included the basic intro for the package below. You can find the package at: https://www.github.com/josiahcarlson/rom https://pypi.python.org/pypi/rom Please CC me on any replies if you have any questions or comments. Thank you, - Josiah What's new? ========== Everything What ==== Rom is a package whose purpose is to offer active-record style data modeling within Redis from Python, similar to the semantics of Django ORM, SQLAlchemy + Elixir, Google's Appengine datastore, and others. Why === I was building a personal project, wanted to use Redis to store some of my data, but didn't want to hack it poorly. I looked at the existing Redis object mappers available in Python, but didn't like the features and functionality offered. What is available ================= Data types: * Strings, ints, floats, decimals * Json columns (for nested structures) * OneToMany and ManyToOne columns (for model references) Indexes: * Numeric range fetches, searches, and ordering * Full-word text search (find me entries with col X having words A and B) Other features: * Per-thread entity cache (to minimize round-trips, easy saving of all entities)

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WSME 0.5b2 released
by Christophe de Vienne 19 Apr '13

19 Apr '13

About WSME ---------- Web Service Made Easy (WSME) simplify the writing of REST web services by providing simple yet powerful typing which removes the need to directly manipulate the request and the response objects. WSME can work standalone or on top of your favorite python web (micro)framework, so you can use both your preferred way of routing your REST requests and most of the features of WSME that rely on the typing system like: * Alternate protocols, including ones supporting batch-calls * Easy documentation through a Sphinx extension Main Changes ------------ * Changed the way datas of complex types are stored. In previous versions, an attribute was added to the type for each attribute, its name being the attribute name prefixed with '_'. Starting with this version, a single attribute _wsme_dataholder is added to the instance. The motivation behind this change is to avoid adding too many attributes to the object. * Add a special type 'HostRequest' that allow a function to ask for the host framework request object in its arguments. * Pecan adapter: Debug mode (which returns the exception tracebacks to the client) can be enabled by the pecan application configuration. * New adapter: wsmeext.flask, for the Flask framework. * Various bug fixes. Documentation ------------- http://pythonhosted.org/WSME/ Download -------- http://pypi.python.org/pypi/WSME/ Cheers, Christophe de Vienne

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PyCamp Registration Open for Columbus, Toronto, and Oshkosh
by Chris Calloway 17 Apr '13

17 Apr '13

Registration is open for three upcoming PyCamps produced by the Triangle Python Users Group: - A five-day PyOhio PyCamp hosted by the Ohio State University Open Source Club, July 22-26, 2013 the week prior to the PyOhio regional Python conference weekend. PyCamp is a training program and sponsor of PyOhio: http://trizpug.org/boot-camp/pyohio13/ - A five-day Toronto PyCamp hosted by the University of Toronto Department of Physics, August 12-16, 2013 the week after the PyCon Canada national Python conference weekend. PyCamp is a Diversity Sponsor of PyCon CA: http://trizpug.org/boot-camp/torpy13/ - A three-day Wisconsin Mini-PyCamp hosted at the University of Wisconsin Oshkosh, June 2-4, 2013 as part of the Plone Symposium Midwest training days: http://trizpug.org/boot-camp/wiscpy13/ PyCamp is the original, ultra-low-cost Python Boot Camp created by a user group for user groups. For beginners, PyCamp makes you productive so you can get your work done quickly. PyCamp emphasizes the features which make Python a simpler and more efficient language. Following along with example Python PushUps speeds your learning process. Become a self-sufficient Python developer at PyCamp. PyCamps are conducted in state of the art high technology classrooms on university campuses. Registration will open soon also for two additional Triangle Python User Group boot camp events. An additional announcement will follow when registration opens for these events, but mark your calendars now: - A five-day Seattle PyCamp hosted by the University of Washington Department of Computer Science and Engineering and UW Marketing, September 9-13, 2013. PyCamp is a sponsor of the Seattle Plone Users Group. - A five-day special Python Web Programming boot camp hosted by the University of North Carolina Department of Marine Sciences, August 5-9, 2013. -- Sincerely, Chris Calloway http://nccoos.org/Members/cbc office: 3313 Venable Hall phone: (919) 599-3530 mail: Campus Box #3300, UNC-CH, Chapel Hill, NC 27599

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ANN: eGenix mx Base Distribution 3.2.6 (mxDateTime, mxTextTools, etc.)
by eGenix Team: M.-A. Lemburg 17 Apr '13

17 Apr '13

________________________________________________________________________ ANNOUNCING eGenix.com mx Base Distribution mxDateTime, mxTextTools, mxProxy, mxURL, mxUID, mxBeeBase, mxStack, mxQueue, mxTools Version 3.2.6 Open Source Python extensions providing important and useful services for Python programmers. This announcement is also available on our web-site for online reading: http://www.egenix.com/company/news/eGenix-mx-Base-Distribution-3.2.6-GA.html ________________________________________________________________________ ABOUT The eGenix.com mx Base Distribution for Python is a collection of professional quality software tools which enhance Python's usability in many important areas such as fast text searching, date/time processing and high speed data types. The tools have a proven record of being portable across many Unix and Windows platforms. You can write applications which use the tools on Windows and then run them on Unix platforms without change due to the consistent platform independent interfaces. Contents of the distribution: * mxDateTime - Easy to use Date/Time Library for Python * mxTextTools - Fast Text Parsing and Processing Tools for Python * mxProxy - Object Access Control for Python * mxBeeBase - On-disk B+Tree Based Database Kit for Python * mxURL - Flexible URL Data-Type for Python * mxUID - Fast Universal Identifiers for Python * mxStack - Fast and Memory-Efficient Stack Type for Python * mxQueue - Fast and Memory-Efficient Queue Type for Python * mxTools - Fast Everyday Helpers for Python The package also include a number of helpful smaller modules in the mx.Misc subpackage, such as mx.Misc.ConfigFile for config file parsing or mx.Misc.CommandLine to quickly write command line applications in Python. All available packages have proven their stability and usefulness in many mission critical applications and various commercial settings all around the world. For more information, please see the distribution page: http://www.egenix.com/products/python/mxBase/ ________________________________________________________________________ NEWS The 3.2.6 release of the eGenix mx Base Distribution is the latest release of our open-source Python extensions. It includes these fixes and enhancements: Fixes ----- * mxURL: Added a work-around to resolve a segfault when exiting the Python 2.7.4 interpreter. This is a Python bug which was introduced in Python 2.7.4 and will get fixed again in Python 2.7.5 - see http://bugs.python.org/issue17703. Documentation Enhancements -------------------------- * mxURL: Added sections on URL join operations and interaction with strings to mxURL documentation. * mxDateTime: Added notice to documentation that .gmtoffset() can give wrong results during DST switching time. Compatibility Enhancements -------------------------- * Filled the tp_methods slot of all extension types to improve Python 2.7 compatibility. Distribution Enhancements ------------------------- * Added download URL registered with PyPI is now a static page and includes an MD5 hash tag to allow verification of the page. * All distribution files are GPG signed with our release key. We also provide MD5 and SHA1 hash values for all files to easily verify the downloads. eGenix mx Base Distribution 3.2.0 was release on 2012-08-28. Please see the eGenix mx Base Distribution 3.2.0 announcement for new features in the 3.2 major release: https://cms.egenix.com/company/news/eGenix-mx-Base-Distribution-3.2.0-GA.ht… For a full list of changes, please refer to the eGenix mx Base Distribution change log and the change logs of the various included Python packages. http://www.egenix.com/products/python/mxBase/changelog.html ________________________________________________________________________ UPGRADING We encourage all users to upgrade to this latest eGenix mx Base Distribution release. If you are upgrading from eGenix mx Base 3.1.x, please see the eGenix mx Base Distribution 3.2.0 release notes for details on what has changed since the 3.1 major release. http://www.egenix.com/company/news/eGenix-mx-Base-Distribution-3.2.0-GA.html For a full list of changes, please refer to the eGenix mx Base Distribution change log at http://www.egenix.com/products/python/mxBase/changelog.html and the change logs of the various included Python packages. ________________________________________________________________________ LICENSE The eGenix mx Base package is distributed under the eGenix.com Public License 1.1.0 which is an Open Source license similar to the Python license. You can use the packages in both commercial and non-commercial settings without fee or charge. The package comes with full source code ________________________________________________________________________ DOWNLOADS The download archives and instructions for installing the packages can be found on the eGenix mx Base Distribution page: http://www.egenix.com/products/python/mxBase/ As always, we are providing pre-built binaries for all common platforms: Windows 32/64-bit, Linux 32/64-bit, FreeBSD 32/64-bit, Mac OS X 32/64-bit. Source code archives are available for installation on all other Python platforms, such as Solaris, AIX, HP-UX, etc. To simplify installation in Zope/Plone and other egg-based systems, we have also precompiled egg distributions for all platforms. These are available on our own PyPI-style index server for easy and automatic download. Whether you are using a prebuilt package or the source distribution, installation is a simple "python setup.py install" command in all cases. The only difference is that the prebuilt packages do not require a compiler or the Python development packages to be installed. ________________________________________________________________________ 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. ________________________________________________________________________ MORE INFORMATION For more information on the eGenix mx Base Distribution, documentation and installation notes, please visit our web-site: http://www.egenix.com/products/python/mxBase/ 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 project 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, Apr 17 2013) >>> Python Projects, Consulting and Support ... http://www.egenix.com/ >>> mxODBC.Zope/Plone.Database.Adapter ... http://zope.egenix.com/ >>> mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/ ________________________________________________________________________ 2013-04-09: Released mxODBC.Connect 2.0.3 ... http://egenix.com/go42 ::::: Try our 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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Course: Python for Programmers in Katowice, Poland, May 27 - 29, 2013
by Mike Müller 17 Apr '13

17 Apr '13

Python for Programmers in Katowice ================================== Date: May 27 - 29, 2013 Location: Katowice, Poland Language: English Link: http://www.python-academy.com/courses/python_course_programmers.html Instructor: Mike Müller (eight years of Python training experience) Three days of Python training for participants with programming experience in other languages. Learn all you need to know about Python to write pythonic programs that take advantage of Python's best features. Want to learn more? Just add another three days of our "Advanced Python" class at the same location (May 30 - June 1, 2013). http://www.python-academy.com/courses/specialtopics/python_course_advanced.… --- Our next courses: 14.04.-17.04.2013 (Leipzig) Python für Nicht-Programmierer (German) 15.04.-17.04.2013 (Leipzig) Python für Programmierer (German) 18.04.-20.04.2013 (Leipzig) Python für Wissenschaftler und Ingenieure (German) 27.05.-29.05.2013 (Katowice, Poland) Python for Programmers (English) 30.05.-01.06.2013 (Katowice, Poland) Advanced Python Course (English) 03.06.-05.06.2013 (Leipzig) Einstieg in Django (German) 06.06.-08.06.2013 (Leipzig) Django für Fortgeschrittene (German) 10.06.-12.06.2013 (Leipzig) Python for Scientists and Engineers (English) 13.06.2013 (Leipzig) Fast Code with the Cython Compiler (English) 14.06.2013 (Leipzig) Fast NumPy Processing with Cython (English) 24.06.-26.06.2013 (Leipzig) Professional Testing with pytest and tox (English) 02.07.2013 (Florence, Italy) Optimization at EuroPython (English) 06.07.-07.07.2013 (Florence, Italy) Advanced Python at EuroPython (English) 09.09.-11.09.2013 (Leipzig) Twisted Training (English) 11.09.-13.09.2013 (Bologna, Italy) Python per programmatori (Italian) 12.09.-13.09.2013 (Leipzig) Content-Management mit Plone (German) 04.11.-06.11.2013 (Leipzig) Introduction to Django (English) 07.11.-09.11.2013 (Leipzig) Advanced Django (English) More information at http://www.python-academy.com -- Dr.-Ing. Mike Müller, M.Sc. - Geschäftsführer (CEO) - Python Academy GmbH & Co. KG Zur Schule 20 04158 Leipzig Germany Sitz (Registered Office): Leipzig Amtsgericht (Registration Court): Leipzig HRA (Commercial Register No.): 16004 Persönlich haftende Gesellschafterin (Personally Liable Partner): py solutions GmbH Sitz (Registered Office): Leipzig Amtsgericht (Registration Court): Leipzig HRB (Commercial Register No.): 25781 Geschäftsführer (Managing Director): Dr. Mike Müller Tel: +49 341 260 3370 Fax: +49 341 520 4495 E-Mail: mmueller(a)python-academy.de WWW: http://www.python-academy.com

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Course: Advanced Python in Katowice, Poland, May 30 - June 1, 2013
by Mike Müller 17 Apr '13

17 Apr '13

Advanced Python in Katowice =========================== Date: May 30 - June 1, 2013 Location: Katowice, Poland Language: English Link: http://www.python-academy.com/courses/specialtopics/python_course_advanced.… Instructor: Mike Müller (eight years of Python training experience) Dive deep into Python. Would you like to learn how decorators work and what descriptors do? Metaclasses don't have to be scary and generators and coroutines can be fun to work with. Context managers can help to improve your code as well as pythonic patterns and best practices. Python has many things to offer that might need a bit more of explanation. Join us for three days of total immersion into a great programming language. Be sure to bring your questions along. Not enough Python experience for an advanced course? Just attend our training "Python for Programmers" at the same location right before (May 27 - 29, 2013) to learn the basics too. http://www.python-academy.com/courses/python_course_programmers.html --- Our next courses: 14.04.-17.04.2013 (Leipzig) Python für Nicht-Programmierer (German) 15.04.-17.04.2013 (Leipzig) Python für Programmierer (German) 18.04.-20.04.2013 (Leipzig) Python für Wissenschaftler und Ingenieure (German) 27.05.-29.05.2013 (Katowice, Poland) Python for Programmers (English) 30.05.-01.06.2013 (Katowice, Poland) Advanced Python Course (English) 03.06.-05.06.2013 (Leipzig) Einstieg in Django (German) 06.06.-08.06.2013 (Leipzig) Django für Fortgeschrittene (German) 10.06.-12.06.2013 (Leipzig) Python for Scientists and Engineers (English) 13.06.2013 (Leipzig) Fast Code with the Cython Compiler (English) 14.06.2013 (Leipzig) Fast NumPy Processing with Cython (English) 24.06.-26.06.2013 (Leipzig) Professional Testing with pytest and tox (English) 02.07.2013 (Florence, Italy) Optimization at EuroPython (English) 06.07.-07.07.2013 (Florence, Italy) Advanced Python at EuroPython (English) 09.09.-11.09.2013 (Leipzig) Twisted Training (English) 11.09.-13.09.2013 (Bologna, Italy) Python per programmatori (Italian) 12.09.-13.09.2013 (Leipzig) Content-Management mit Plone (German) 04.11.-06.11.2013 (Leipzig) Introduction to Django (English) 07.11.-09.11.2013 (Leipzig) Advanced Django (English) More information at http://www.python-academy.com -- Dr.-Ing. Mike Müller, M.Sc. - Geschäftsführer (CEO) - Python Academy GmbH & Co. KG Zur Schule 20 04158 Leipzig Germany Sitz (Registered Office): Leipzig Amtsgericht (Registration Court): Leipzig HRA (Commercial Register No.): 16004 Persönlich haftende Gesellschafterin (Personally Liable Partner): py solutions GmbH Sitz (Registered Office): Leipzig Amtsgericht (Registration Court): Leipzig HRB (Commercial Register No.): 25781 Geschäftsführer (Managing Director): Dr. Mike Müller Tel: +49 341 260 3370 Fax: +49 341 520 4495 E-Mail: mmueller(a)python-academy.de WWW: http://www.python-academy.com

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numba 0.8
by mark florisson 16 Apr '13

16 Apr '13

Numba 0.8 adds support for autojit classes and methods, building on the perfect hash table ideas from SEP 201 [1]. This allows methods to automatically specialize to argument types and instance attribute types. Many thanks to Dag Sverre Seljebotn for his work and ideas on the SEPs and his ideas and implementation of the hash table and surrounding facilities, and many thanks to Robert Bradshaw for his contributions and ideas. Further functionality includes Python 3 support for pycc, and retrieving pointers from numba jit functions. A memory leak that plagued users has also been fixed. Many thanks for all the bug reports and feedback! Over the coming months we hope to stabilize numba and allow distribution of portable numba code and a well-defined and stable runtime. We also hope to address some of the math portability and numerical stability issues. We have a roadmap [2] which details what we want to do, and also provides entry points for new potential developers to contribute. Stay tuned as we try to make numba more robust, portable, interoperable and usable :) Download ======== http://numba.pydata.org/download.html Website ======= http://numba.pydata.org/ Documentation ============ http://numba.pydata.org/numba-doc/0.8/index.html Numba ====== Numba is an just-in-time specializing compiler which compiles annotated Python and NumPy code to LLVM (through decorators). Its goal is to seamlessly integrate with the Python scientific software stack and produce optimized native code, as well as integrate with native foreign languages. References ========= [1]: https://github.com/numfocus/sep/blob/master/sep201.rst [2]: http://numba.pydata.org/numba-doc/dev/roadmap.html

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ANN: Hy - Python / Lisp interoperability layer (0.9.6)
by Paul Tagliamonte 16 Apr '13

16 Apr '13

Hello, World! tl;dr ===== Version: 0.9.6 License: Expat (sometimes called MIT) Hilarious: Yes Site: http://hylang.org Hy is a wicked funny hack that lets you interop (in both directions) with Lisp from Python (or with Python from Lisp). It's pip installable: $ pip install hy [...] $ hy => (print (.join ", " ["Hello" "World"])) Hello, World (REPL even has cute readline bits mostly workingish, with a few known issues) What's new ========== There's a new release of hy (version 0.9.6) pushed to PyPi. It's hand-crafted with the utmost care from the AUTHORS[1] to help you (yes, you!) hack using Lisp without giving up your Python libs of choice (or even your Python libs giving up on you!) The source is on GitHub @ http://github.com/hylang/hy (star it, fork it, hack it) It's undergoing changes quite quickly - so, be careful! The API / language is being worked out very quickly. The two releases since the last post here (0.9.5 and 0.9.6) features the following select features (for a full list, check NEWS, this is seriously cut down) * Added all the missing math operators. * We now support float and complex numbers. * Keywords (such as :foo) are now valid and loved. * `try' now accepts `else' * Added "not" as the inline "not" operator. * `let' macro added * Added "~" as the "invert" operator. * Added the tail threading macro (->>) * UTF encoded symbols are allowed, but mangled. * If hoisting (for things like printing the return of an if statement) have been added. '(print (if true true true))' OK, what is it (technically) ============================ Hy is a set of hacks, implemented in Python, to lex and compile a Lisp variant (called `Hy', which looks very similar to Clojure in some ways) into Python AST, and transparently load it into sys.modules using a PEP 302 import hook. I gave a lightning talk about Hy at PyCon, in case anyone's having flashbacks. You can see that talk on my blog (http://blog.pault.ag/post/46982895940/), or watch a full hour-long talk about Hy at Boston Python at http://www.youtube.com/watch?v=ulekCWvDFVI Thanks! ======= Thanks, folks! Tweet about it, hack with it, hang out with us on #hy on freenode[2]. Fondly, and with just tons of love, [1]: * Paul Tagliamonte <paultag(a)debian.org> * Thomas Mashek <thomas(a)thescoundrels.net> * Amrut Joshi <amrut.joshi(a)gmail.com> * Christopher Allan Webber <cwebber(a)dustycloud.org> * Will Kahn-Greene <willg(a)bluesock.org> * James King <james(a)agentultra.com> * Julien Danjou <julien(a)danjou.info> * Nicolas Dandrimont <nicolas.dandrimont(a)crans.org> * Gergely Nagy <algernon(a)madhouse-project.org> * Konrad Hinsen <konrad.hinsen(a)fastmail.net> * Vladimir Gorbunov <vsg(a)suburban.me> [2]: http://webchat.freenode.net/?channels=hy -- .''`. Paul Tagliamonte <paultag(a)debian.org> : :' : Proud Debian Developer `. `'` 4096R / 8F04 9AD8 2C92 066C 7352 D28A 7B58 5B30 807C 2A87 `- http://people.debian.org/~paultag

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[ANN] Enthought Tool Suite (ETS) v 4.3
by Prabhu Ramachandran 15 Apr '13

15 Apr '13

Hello, We are happy to announce the release of version 4.3 of the Enthought Tool Suite (ETS-4.3.0). ETS (http://code.enthought.com/projects) is a collection of free, open-source components developed by Enthought and our partners, which we use every day to construct custom scientific applications. ETS includes a wide variety of components, including: - an extensible application framework - application building blocks - 2-D and 3-D graphics libraries - scientific and math libraries - developer tools This release features some important improvements: - NEW: Casuarius (Cython binding for Cassowary) supports constraints-based layout in Enaml, and soon in Enable. Cassowary is an incremental constraint-solving toolkit, which efficiently solves systems of linear equalities and inequalities. - Mayavi now fully supports the Qt backend. The Volume module is now usable with the Qt backend. This also means that Mayavi can be used on Mac OS X 64-bit using the Qt backend. - Chaco has added space-saving horizon plots, and improvements to many plots and tools. - Pyface has added and improved many UI components. - Enaml 0.6 has made extensive API changes and performance enhancements, and added many features, including new and improved widgets, embedded matplotlib and traitsui, and enhanced layout flow. However it is still under heavy development, and its API will continue to change in backward-incompatible ways. Use at your own risk. - Bug fixes to all packages. - Improvements to documentation and examples. The recommended way to get the ETS packages is to use Enthought Canopy<https://www.enthought.com/products/canopy/> (formerly EPD). They are also available on PyPI, and the source code is on github. cheers, ETS Developers.

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ANN: Using xtopdf and pypyodbc to publish MS Access database data to PDF
by vasudevram 14 Apr '13

14 Apr '13

Wrote a program that lets you publish your MS Access database data to PDF, using Python, ReportLab, xtopdf and pypyodbc. (This code will go into my xtopdf toolkit (a Python toolkit for PDF creation) after cleanup, in a while.) Link: http://jugad2.blogspot.in/2013/04/using-xtopdf-and-pypyodbc-to-publish-ms.h… Note: Saw some comments about my blog post on the Python Reddit, which made me realize that I had not explained that similar code can be used to publish data from any ODBC database (for which you have an ODBC driver, and which is supported by pypyodbc), to PDF. All you have to do is change the connection string in the code, and maybe a few other small tweaks for differences between SQL dialects of different RDBMS's. Enjoy. - Vasudev Ram www.dancingbison.com jugad2.blogspot.com bitbucket.org/vasudevram/xtopdf

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