Mailman 3 July 2010 - Python-announce-list

cx_OracleDBATools 3.0
by Anthony Tuininga 23 Jul '10

23 Jul '10

What is cx_OracleDBATools? cx_OracleDBATools is a set of Python scripts that handle Oracle DBA tasks in a cross platform manner. These scripts are intended to work the same way on all platforms and hide the complexities involved in managing Oracle databases, especially on Windows. Binaries are provided for those who do not have a Python installation. Where do I get it? http://cx-oradbatools.sourceforge.net What's new? 1) Added support for Oracle 11.x. 2) Removed direct support for Oracle 8.x and Oracle 9.x which are no longer supported by Oracle. 3) Write all SQL used for creating or restoring the database to the file system to allow for manual recovery in case of failures. 4) Added new script for exporting the parameter file as a means of testing the contents of the generated parameter file or for seeing the contents of the stored parameter file if one is being used. 5) Fixed handling of parameter log_archive_duplex_dest. 6) Fixed hanlding of parameters with a blank value. 7) Workaround bug in Python on Linux where os.waitpid() results in an OS error about no child processes. 8) Make source compatible with Python 3.x without losing compatibility with Python 2.x. 9) Changed backup and restore to use RMAN which allows for backups while the database is running. The backup utility can now create directories, uncompressed tar files or tar files compressed with either gzip or bzip2 as desired. Server parameter files (spfiles) and password files are now backed up correctly. 10) On Windows, configuration is now read from the service directly and the situation where the database is configured to start when the service starts is now handled correctly. 11) Created build configuration script using the new version of cx_Freeze which allows for building installer images on Windows and RPM packages on Linux. 12) Added documentation. 13) The cx_Logging module is now used for all logging instead of simply being printed to stdout or stderr.

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ANN: blist 1.2.0
by Daniel Stutzbach 21 Jul '10

21 Jul '10

The blist package contains several container types to supplement those built-in to Python. These types closely mirror the built-in types' methods, so the learning curve is close to zero. The package includes: - blist: a list type with O(log n) insertions, deletes, and slices and other performance enhancements - btuple: a tuple type with O(log) slices - sorteddict: a dict type that efficiently keeps keys in sorted order - sortedlist: a list type that efficiently keeps the items sorted order - sortedset: an indexable set type that efficiently keeps the items sorted order - weaksortedlist, weaksortedset: weak reference versions of sortedlist and sortedset What's new? ----------- - blist.sort() is now *substantially* faster than list.sort() when using int or float keys (O(n) vs. O(n log n)) - The sortedset, sortedlist, and sorteddict types have been revamped for better compatibility with the standard library's types. - Comprehensive reference documentation is now available at http://stutzbachenterprises.com/blist/ - Numerous other speed improvements Links ----- - blist vs. list performance comparison: http://stutzbachenterprises.com/performance-blist - Documentation: http://stutzbachenterprises.com/blist/ - Download: http://pypi.python.org/pypi/blist/ - Source repository: http://github.com/DanielStutzbach/blist - Issue tracker: http://github.com/DanielStutzbach/blist/issues -- Daniel Stutzbach, Ph.D. President, Stutzbach Enterprises, LLC <http://stutzbachenterprises.com>

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[ann] Hatta 1.4.0 wiki engine released
by Radomir Dopieralski 21 Jul '10

21 Jul '10

I'm proud to announce release 1.4.0 of Hatta wiki engine. http://hatta.sheep.art.pl/ What is Hatta? -------------- Hatta is a small wiki engine designed to run locally or via WSGI inside a directory in a Mercurial repository. All the pages are normal text or binary (for images and such) files, also editable from outside of the wiki -- the page history is taken from the repository. Who is it for? -------------- It's mostly for small development teams to use for documentation of the project right in the repository. It's mostly a plain, traditional wiki, without fancy features to distract from doing real work. Features -------- * single python script file * no installation necessary, just run it in your repository * can also run on the server as WSGI application * fast indexed search and backlinks * lives inside a repository, so can be cloned, merged, etc. * customizable by creating wiki pages with styles, logo, menu, etc. This version ------------ * image thumbnails * changed how URLs are built * markup for monospace * compatibility with Mercurial 1.6 * orphaned and wanted pages index * a lot of bugfixes Enjoy! -- Radomir Dopieralski, http://sheep.art.pl

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cx_Oracle 5.0.4
by Anthony Tuininga 21 Jul '10

21 Jul '10

What is cx_Oracle? cx_Oracle is a Python extension module that allows access to Oracle and conforms to the Python database API 2.0 specifications with a few exceptions. Where do I get it? http://cx-oracle.sourceforge.net What's new? 1) Added support for Python 2.7. 2) Added support for new parameter (port) for subscription() call which allows the client to specify the listening port for callback notifications from the database server. Thanks to Geoffrey Weber for the initial patch. 3) Fixed compilation under Oracle 9i. 4) Fixed a few error messages.

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Pydev 1.6.0 Released
by Fabio Zadrozny 21 Jul '10

21 Jul '10

Hi All, Pydev 1.6.0 has been released Details on Pydev: http://pydev.org Details on its development: http://pydev.blogspot.com Release Highlights: ------------------------------- * Debugger o Code-completion added to the debug console o Entries in the debug console are evaluated on a line-by-line basis (previously an empty line was needed) o Threads started with thread.start_new_thread are now properly traced in the debugger o Added method -- pydevd.set_pm_excepthook() -- which clients may use to debug uncaught exceptions o Printing exception when unable to connect in the debugger * General o Interactive console may be created using the eclipse vm (which may be used for experimenting with Eclipse) o Apply patch working (Fixed NPE when opening compare editor in a dialog) o Added compatibility to Aptana Studio 3 (Beta) -- release from July 12th What is PyDev? --------------------------- PyDev is a plugin that enables users to use Eclipse for Python, Jython and IronPython development -- making Eclipse a first class Python IDE -- It comes with many goodies such as code completion, syntax highlighting, syntax analysis, refactor, debug and many others. Cheers, -- Fabio Zadrozny ------------------------------------------------------ Software Developer Aptana http://aptana.com/ Pydev - Python Development Environment for Eclipse http://pydev.org http://pydev.blogspot.com

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python-crypto list has a new home
by Michael Ströder 20 Jul '10

20 Jul '10

HI! The python-crypto mailing list had to move to a new mailing list service. The natural choice was to move under the umbrella of python.org. The new list address is: python-crypto(a)python.org My archive of the old postings was imported to the new list service: http://mail.python.org/pipermail/python-crypto/ For various reasons I will *not* migrate the subscriptions of the old PYTHON-CRYPTO list at SURFnet#s LISTSERV! So you have to manually subscribe to this new list: http://mail.python.org/mailman/listinfo/python-crypto Hope to see you all there soon. Ciao, Michael.

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giljoy 0.1: Find which C functions are holding the global interpreter lock (GIL)
by Itamar Turner-Trauring 20 Jul '10

20 Jul '10

Ever wondered which C extension functions ought to be releasing the global interpreter lock? giljoy might be able to help. http://itamarst.org/software/giljoy-0.1.tar.gz Giljoy helps you find C functions that are holding the GIL; in some cases they could release the GIL, thus making your program more concurrent. The program uses sampling, so it finds the functions that most frequently hold the GIL, and may miss infrequently called functions. Theory of operation: a preloaded module sets a C variable indicating which thread has GIL. A separate program attaches gdb and then inspects the C variable. = Supported Platforms = The program was only tested on Ubuntu 10.4 with Python 2.6; it will probably only run on modern versions of Linux. Since it involves large amounts of duct tape and magic pixie dust, it may not work without some tweaking -- please let me know if you have any problems! = Requirements = pygdb 0.2: http://code.google.com/p/pygdb/ Python with debug symbols (e.g. "apt-get install python2.6-dbg" on Ubuntu). = Sample Output = Here you can see a large chunk of the time the GIL is held by a C function that ought to release the GIL (nogil_sleep, which calls usleep which calls nanosleep). The rest of the time the GIL is held by internal Python functions that cannot be changed. $ ./giljoy example.py Functions that held GIL, by percentage seen (194 samples): 37%: nanosleep(/lib/libc.so.6) < usleep(/lib/libc.so.6) < nogil_sleep(nogilexample.c) < call_function(../Python/ceval.c) < PyEval_EvalFrameEx(../Python/ceval.c) 24%: PyEval_EvalFrameEx(../Python/ceval.c) 3%: frame_dealloc(../Objects/frameobject.c) < fast_function(../Python/ceval.c) < call_function(../Python/ceval.c) < PyEval_EvalFrameEx(../Python/ceval.c) ... etc. ...

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relatorio 0.5.5 released
by ced 20 Jul '10

20 Jul '10

Relatorio is a project to easily create reports in a variety of formats (openoffice text, PDF, XHTML) from python objects. A new minor release of relatorio has been published. It only fixes the namespace in opendocument manifest which is required for OpenOffice 3.2. relatorio is available on PyPI: http://pypi.python.org/pypi/relatorio/0.5.5

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cx_Freeze 4.2
by Anthony Tuininga 20 Jul '10

20 Jul '10

What is cx_Freeze? cx_Freeze is a set of scripts and modules for freezing Python scripts into executables in much the same way that py2exe and py2app do. It requires Python 2.3 or higher since it makes use of the zip import facility which was introduced in that version. Where do I get it? http://cx-freeze.sourceforge.net What's new? Changes from 4.1.2 to 4.2 1) Added support for Python 2.7. 2) Improved support for Python 3.x. 3) Improved support for Mac OS X based on feedback from some Mac users. 4) Improved hooks for the following modules: postgresql, matplotlib, twisted, zope, PyQt4. 5) Improved packaging of MSI files by enabling support for creating shortcuts for the executables, for specifying the initial target directory and for adding other arbitrary configuration to the MSI. 6) Added support for namespace packages such as those distributed for zope. 7) The name of the generated MSI packages now includes the architecture in order to differentiate between 32-bit and 64-bit builds. 8) Removed use of LINKFORSHARED on the Mac which is not necessary and for Python 2.6 at least causes an error to be raised. 9) Turn off filename globbing on Windows as requested by Craig McQueen. 10) Fixed bug that prevented hooks from successfully including files in the build (as is done for the matplotlib sample). 11) Fixed bug that prevented submodules from being included in the build if the format of the import statement was from . import <name>. 12) Reverted bug fix for threading shutdown support which has been fixed differently and is no longer required in Python 2.6.5 and up (in fact an error is raised if the threading module is used in a frozen executable and this code is retained). 13) Fixed bug which resulted in attempts to compile .pyc and .pyo files from the initscripts directory. 14) Fixed selection of "Program Files" directory on Windows in 64-bit MSI packages built by cx_Freeze.

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ANN: PiCloud's Python Platform is now open to the Public!
by Ken Elkabany 19 Jul '10

19 Jul '10

After 5 months in private beta, PiCloud, a cloud computing platform for the Python Programming Language, is now open to the general public. PiCloud enables Python users to leverage the power of an on-demand, high performance, and auto scaling compute cluster with as few as two lines of code! No server management necessary. All new users receive 5 free compute hours of computation. You can find out more here: http://www.picloud.com Full service description: PiCloud is a cloud computing platform that integrates into the Python Programming Language. It enables you to leverage the compute power of Amazon Web Services without having to manage, maintain, or configure virtual servers. PiCloud integrates seamlessly into your existing code base through a custom Python library, cloud. To offload the execution of a function to the cloud, all you must do is pass your desired function into the cloud library. PiCloud will then run the function on its high-performance and automatically-scaling cluster. We quickly scale our server capacity to meet your computational needs, and only charge you for the resources you actually consume. Getting on the cloud has never been this easy! PiCloud improves the full cycle of software development and deployment. Functions that are run on PiCloud have their resource usage monitored, performance analyzed, and errors traced; we further aggregate all your functions to give you a bird's eye view of your service. Through these introspective capabilities, PiCloud enables you to develop faster, easier, and smarter. Common use cases for our platform: * Scientific computing * Simulations * Video and image encoding * Statistical analysis of data sets * Real-time data processing * Charts and graphs generation Cheers, Ken Elkabany PiCloud, Inc.

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