Python-announce-list July 2015

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34 participants
45 discussions

ANN: tsWxGTUI_PyVx 0.0.0 (pre-alpha) has been released.

by rsg.softwaregadgetry＠gmail.com

ANN: tsWxGTUI_PyVx 0.0.0 (pre-alpha) has been released. What is it? =========== tsWxGTUI_PyVx is a foundation for developing, operating and troubleshooting Python and Python Curses based application programs embedded in local and remote 32-/64-bit computer systems used to monitor and control mission critical equipment. The architecture features Python 2x & Python 3x based Command Line Interfaces (CLI) and Python "Curses"-based "wxPython"-style, Graphical-Text User Interfaces (GUI). The tsWxGTUI_PyVx Application Programming Interface (API) for the CLI and GUI are identical for the Python 2x and Python 3x versions. There are only minor internal differences in the source code. With it, you get that cross-platform, pixel-mode "wxPython" feeling on character-mode 8-/16-color (xterm-family) & non-color (vt100-family) terminals and terminal emulators. What's new in version 0.0.0? ============================ Though the repository is extractable from its zip file after download, only the two Site-Packages in its Source-Distribution are installable. The extensive engineering notebook documention and two Developer-Sand- boxes are not installable because they are provided only to facilitate software development, maintenance and troubleshooting. The two Site-Packages may be installed and verified via the approprite install commands: 1. Example for installing and verifying the Python 2.x site-package: a. cd ./tsWxGTUI_PyVx_Repository/SourceDistributions/ Site-Packages/tsWxGTUI_PyVx/Python-2x b. python2.7 setup.py install c. Follow the demonstration and test instructions in: ./tsWxGTUI_PyVx_Repository/Documents/Demo.txt 2. Example for installing and verifying the Python 3.x site-package: a. cd ./tsWxGTUI_PyVx_Repository/SourceDistributions/ Site-Packages/tsWxGTUI_PyVx/Python-3x b. python3.4 setup.py install c. Follow the demonstration and test instructions in: ./tsWxGTUI_PyVx_Repository/Documents/Demo.txt Features: ========= 1. Launching from command line interface mode 2. Frames, Dialogs, Scrolled Windows 3. Panels 4. Buttons, CheckBoxes, Radio Boxes/Buttons 5. Text Entry and Password Entry (still under development) 6. Splash Screen display constructed or re-used during launch 7. 68-color palette (mapped into 8-/16-color Curses palette) 8. Logging to Screen and Files 9. Event Handling (not yet general purpose) 10. Task Bar (not yet capable of changing focus) 11. Position and dimensions accepted in Pixel (default) or Character (option) cell units. Capabilities: ============= 1. A library of general-purpose, re-usable building block modules for embedded systems. The building blocks: a. Provides both Command Line and Graphical-style User Interfaces that enable application developers to focus on the application specific functionality and not waste effort reinventing the functionality typical of Command Line and Graphical User Interfaces. b. Can operate in an isolated system (Stand-Alone mode) or in a networked system (Stand-Among mode). c. Are implemented in Python 2.x. d. Are ported to Python 3.x using a Python program (2to3) which reads Python 2.x source code and applies a series of fixers to transform it into valid Python 3.x code. Debugging of the Python 3.x code may be required to identify and resolve such runtime issues as decoding the type of data returned by Python curses modules. 2. Cross-platform designs run, without change, on Linux, Mac OS X and Microsoft Windows (the latter requires Cygwin, a Linux-like command line interface and GNU tool add-on from Red Hat). 3. Command Line Interface includes building blocks that create a sophisticated POSIX-/ Unix-like terminal interface. It features: a. Command line keyword/value pair option and positional argument parsing (using the most recent Python argparse, optparse or getopt package that is available). Default parser supports typical options: -h/--help, -a/--about, -d/--debug, -v/--version -V/--Verbose; b. Error/exception handling displays messages on console and returns Unix-style 8-bit exit code to coordinate a sequence of multiple applications. c. Event logging to application designated terminals, files or devices. d. Launching, event dispatching and terminating of the Graphical-style User Interface. e. Wrapper used to ensure that each application termin- ates with the exit code and message appropriate for co-ordination of a sequence of multiple applications. f. Tool to scan an operator designated directory tree and strip lines of source code of any superfluous trailing blank characters. g. Tool to create a copy of an operator designated directory tree after stripping comments and doc strings from Python source code to reduce required embedded system storage resources. h. Tool to scan an operator designated directory tree and report on the total number of files, total number of lines of code, total number of blank/comment lines and their distribution among the file name extensions associated with various programming language such as Ada, Assembler, C/C++, Fortran, Pascal, Python, and shell script. 4. Graphical-style User Interface includes building blocks that create a sophisticated Desktop, Laptop and Work- station Computer-like terminal interface. Using the "nCurses" character-mode and xterm libraries of the host platform, it emulates a subset of the "wxPython" pixel-mode Graphical User Interface. This enables "wxPython" applications to run with little, if any, change if they neither use icons nor other bit-mapped images, nor use proportional sized fonts or associated special features. The emulation features the following widgets: a. Tiled (side-by-side) and overlapped (partially hidden) windows. b. Frames / Dialogs (top-level windows containing other widgets). c. Menu bars (windows) containing drop down menus (windows). d. Tool bars (windows) containing a collection of windows for on-screen buttons, menus, or other input or output widgets. e. Status bars (windows) containing an information window, at the bottom of a top-level window, some- times divided into sections, each of which shows different information). f. Task bar (a top-level window) containing buttons for windows used to control which top-level window has focus and is not partially hidden. g. Sizers (non-windows) containing box and grid sizers or windows for tables of data or buttons. h. Panels (windows) containing sizers or windows. i. Buttons (windows) for operator control action trig- gers, j. Check boxes (windows) containing buttons for enab- ling/disabling any one or combination of several operator mode and option control action triggers. k. Radio boxes (windows) containing buttons for choice of one of several operator mode and option control action triggers. l. Gauges (windows) for horizontal and vertical bar graph widgets. m. Scrolled areas (windows) containing a scrollable text window and horizontal and/or vertical scrollbars (each with associated scroll position gauge and scroll control buttons for action triggers. n. Redirected output (a top-level window or log file) containing system and application messages annotated with date, time and event severity levels that are printed or sent to syslog, stderr, stdout or scrolled windows. o. Splash screen (bit-mapped image) that notifies the operator that the program is in the lengthy process of loading. Limitations: ============ 1. Known "nCurses"-based, "wxPython" Emulation Limitations a. Supports typical nCurses platforms with keyboard, mouse and only 8-/16 color display terminal or term- inal emulator despite some older host-specific curses implementation reports of 88/256 available colors and 7744/32768 color pairs. b. Supports typical nCurses platforms with keyboard, mouse and 1-color phosphor vt100 and vt220 terminal or terminal emulator despite some older host-specific curses implemen- tations which report no mouse. However, unlike the xterm mouse interface (which issues a single hardware notification containing mouse id, mouse x-y-z position, button id and the id for either a single/double/ triple click), the vt100/vt220 mouse interface (issues a sequence of six hardware notifications each time a button is pressed or released. The data from twelve notifications must be parsed and re-assembled into a single xterm-type notification before an association can be made between the triggering (button) and event handling (frame) wxPython-style GUI objects. Of the hardware notifications, the first six describe the mouse id, mouse x-y-z position, button id and button press state. The last six describe the mouse id, mouse x-y-z position, button id and button release state. As a consequence, the synthesized vt100/vt220 mouse event processing recognizes single mouse button clicks but not double or triple ones. c. Bit-mapped images are NOT supported except for the prerecorded one used at startup as a Splash screen. d. Maps wxPython-style pixel dimensions into/from nCurses character row and column cell units (emulation assumes character cell equivalent pixel dimensions are 8 width x 12 height). The operator must therefor manually con- figure the terminal window to either use smaller fonts or a larger window. e. Supports the operator selected terminal/terminal emulator fixed font with the blink, bold, dim, normal, reverse, standout and underline attribute changed/restored by the application as appropriate. However, not all host operating system platforms actually blink and some change colors instead. f. Unverified support for nCurses platforms with key- board, mouse and 256-color display terminal or xterm_256color terminal emulator when control switch to "USE_256_COLOR_PAIR_LIMIT" is deactivated. g. Automatically maps 68-color, "wxPython" palette only into available nCurses 8-/16-color xterm palette. h. Automatically maps 68-color, "wxPython" palette only into available nCurses 1-color (ON/OFF) vt100/vt220 palette. 2. Known "wxPython" Emulation Issues a. Mouse Event handling is rudimentary but suitable for left/middle/right button click, double-click use. b. Queued GUI and non-GUI event processing is non-func- tional while under development. c. Frame / Dialog closing/resizing/deleting is is non- functional while under development. d. Frame / Dialog overlay stacking/hiding/unhiding is non-functional while under development. e. Dialog user keyboard input processing is not recom- mended while under development. f. Linux host platform-specific exceptions during the determination of which GUI scrollbar object may intermittantly occur with mouse clicks. Requirements: ============= Python 2.6.8-2.7.9 with curses and/or nCurses Python 3.0.1-3.4.3 with curses and/or nCurses Platforms: ========== Except as noted below, the foundation is known to work with keyboard and mouse input under: 1. Linux (CentOS 7, Debian 8, Fedora 22, OpenSuSE 13.1, Scientific 7 and Ubuntu 12.04-15.04) using "Terminal" application with non-color (vt100, vt220), 8-color/64-color pair (xterm, xterm-color), 16-color/256-color pair xterm-16color, xterm-88color and xterm-256color) terminals/terminal emulators 2. Mac OS X (10.3-10.10) using third-party "iTerm2" application with non-color (vt100, vt220), 8-color/64-color pair (xterm, xterm-color), 16-color/256-color pair (xterm-16color, xterm-88color and xterm-256color) terminals/terminal emulators 3. Microsoft Windows (requires Cygwin, free Linux-like plugin from Red Hat with XP, 7, 8, 8.1 and 10 --- Technical Preview) using "mintty" application with non-color (vt100, vt220), 8-color/64-color pair (xterm, xterm-color), 16-color/256-color pair xterm-16color, xterm-88color and xterm-256color) terminals/terminal emulators 4. Unix (PC-BSD 10, OpenIndiana 151a8, OpenSolaris 11) using "Terminal" application with non-color (mouseless vt100 and vt220), 8-color/ 64-color pair (xterm, xterm-color), 16-color/256-color pair xterm-16color, xterm-88color and xterm-256color) terminals/terminal emulators Where can I get it? =================== The source code, documentation and engineering notebook are on github: https://github.com/rigordo959/tsWxGTUI_PyVx_Repository If you would like more information before downloading a copy of the repository to your computer, you can browse through the informative README.txt file and the text files it references. You may also browse through the Adobe PDF files in the Engineering Notebook. However, if you attempt to view Microsoft documents (Word, Excel, Access, PowerPoint, Visio), GitHub will respond: "Sorry about that, but we can't show files that are this big right now." Please submit comments about the features, performance and priorities for any requested changes to: SoftwareGadgetry(a)comcast.net

6 years, 6 months

Re: ANN: decorator-4.0.0 released

by Michele Simionato

Ops! Cut and paste error from an old announcement. Of course now there is a single documentation both for Python 2 and 3, so the only valid link is https://github.com/micheles/decorator/blob/4.0.0/documentation.rst

6 years, 6 months

ANN: decorator-4.0.0 released

by Michele Simionato

The decorator module is over ten years old, but still alive and kicking. It is used by several frameworks and has been stable for a long time. It is your best option if you want to preserve the signature of decorated functions in a consistent way across Python releases. Version 4.0 is fully compatible with the past, except for one thing: support for Python 2.4 and 2.5 has been dropped and now there is an unified code base for Python 2.6, 2.7, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5. You can download the new release from PyPI with the usual $ pip install decorator The source code and the documentation are on GitHub: https://github.com/micheles/decorator/blob/4.0.0/documentation.rst (for Python 2.X) https://github.com/micheles/decorator/blob/4.0.0/documentation3.rst (for Python 3.X) What's new --------------------- Since now there is a single manual for all Python versions, I took the occasion for overhauling the documentation. Therefore, even if you are an old time user, you may want to read the docs again, since several examples have been improved. The packaging has been improved and I am distributing the code in wheel format too. The integration with setuptools has been improved and now you can use ``python setup.py test`` to run the tests. A new utility function ``decorate(func, caller)`` has been added, doing the same job that in the past was done by ``decorator(caller, func)``. The old functionality is still there for compatibility sake, but it is deprecated and not documented anymore. Apart from that, there is a new experimental feature. The decorator module now includes an implementation of generic (multiple dispatch) functions. The API is designed to mimic the one of ``functools.singledispatch`` (introduced in Python 3.4) but the implementation is much simpler; moreover all the decorators involved preserve the signature of the decorated functions. Enjoy! Michele Simionato

6 years, 6 months

ANN: RunStats 0.5.3 released

by Grant Jenks

Announcing the release of RunStats version 0.5.3 What is RunStats? ------------------------- RunStats is an Apache2 licensed Python module that computes statistics and regression in a single pass. Supported summary statistics include min, max, mean, variance, standard deviation, skewness, and kurtosis. Simple linear regression calculates slope, intercept and correlation. It's implemented in pure-Python with 100% code coverage, complete documentation, and numerically stable algorithms. What's new in 0.5.3? -------------------- - Added optional iterable parameter to object initializers. - Added division import from __future__. - All pushed values are now explicitly converted to float. - Updated documentation with Tutorial and API. Links ----- - Documentation: http://www.grantjenks.com/docs/runstats/ - Download: https://pypi.python.org/pypi/runstats - Source: https://github.com/grantjenks/python_runstats - Issues: https://github.com/grantjenks/python_runstats/issues This release is backwards-compatible. Please upgrade.

6 years, 6 months

[ANN] metamodule v1.0 released

by Nathaniel Smith

Hi all, I'm pleased to announce the first release of 'metamodule', a new package that allows you to safely and easily hook attribute access on your package's module object (among other things). So for example, you can easily set it up so that a submodule in your package is lazily loaded the first time it is used, or so that a DeprecationWarning is issued every time a global constant is accessed. Downloads: https://pypi.python.org/pypi/metamodule Source/issues: https://github.com/njsmith/metamodule Share and enjoy, -n -- Nathaniel J. Smith -- http://vorpus.org

6 years, 6 months

PyQt v5.5 Released

by Phil Thompson

PyQt5 v5.5 has been released and is available from http://www.riverbankcomputing.com/software/pyqt/download5. PyQt5 is a comprehensive set of bindings for v5 of The Qt Company's Qt cross-platform application framework. It supports Python v3, v2.7 and v2.6. The highlights of this release include support for Qt v5.5.0 including the new QtLocation and QtNfc modules. PyQt5 supports cross-compiling to iOS and Android. Windows installers are provided which contain everything needed for PyQt5 development (including Qt, Qt Designer, QScintilla, and MySQL, PostgreSQL, SQLite and ODBC drivers) except Python itself. Installers are provided for the 32 and 64 bit versions of Python v3.4. PyQt5 is implemented as a set of 35 extension modules comprising more than a 1,000 classes including support for: - non-GUI infrastructure including event loops, threads, i18n, user and application settings, mapped files and shared memory - GUI infrastructure including window system integration, event handling, 2D graphics, basic imaging, fonts, OpenGL - a comprehensive set of desktop widgets - WebKit and Chromium based browsers - WebSockets - location and positioning services (including OpenStreetMap) using satellite, Wi-Fi or text file sources - a client-side library for accessing Qt Cloud Services - full integration with Quick2 and QML allowing new Quick items to be implemented in Python and created in QML - event driven network programming - multimedia including cameras, audio and radios - Bluetooth - NFC enabled devices - sensors including accelerometers, altimeters, compasses, gyroscopes, magnetometers, and light, pressure, proximity, rotation and temperature sensors - serial ports - SQL - printing - DBus - XPath, XQuery, XSLT and XML Schema validation - a help system for creating and viewing searchable documentation - unit testing of GUI applications.

6 years, 6 months

Simplifying Subclassing of SimpleHTTPRequestHandler

by J Adrian Zimmer

If you are a Python programmer wanting to set up an open-source server for your own application, if you don't need a high volume, general purpose server and are put off by the complexities of Apache and BaseHTTPServer, then ProgrammableServer may be for you. It is easy to setup and, if necessary, reconfigure. With ProgrammableServer, you can create a simple or complex application whose demands on a web server are few. You do this by writing one or more *expanders* each of which handles a single kind of request. Writing an expander is made easier because you have a choice of mixins to include. An expander mixin consists of a few functions that provide an environment customized to your needs. See more at: https://github.com/J-Adrian-Zimmer/ProgrammableServer.git

6 years, 6 months

Extending BaseHTTPServer The Easy Way

by jadrianzimmer＠gmail.com

Here is the beginning of the README.md for https://github.com/J-Adrian-Zimmer/ProgrammableServer.git If you are a Python programmer wanting to set up a server for your own application, if you don't need a high volume, general purpose server and are put off by the complexities of Apache and BaseHTTPServer, then ProgrammableServer may be for you. It is easy to setup and, if necessary, reconfigure. With ProgrammableServer, you can create a simple or complex application whose demands on a web server are few. You do this by writing one or more expanders each of which handles a single kind of request. Writing an expander is made easier because you have a choice of mixins to include. An expander mixin consists of a few functions that provide an environment customized to your needs.

6 years, 6 months

Trac 1.1.6 Released

by Ryan Ollos

Trac 1.1.6 Released =================== Trac 1.1.6, the final release on the 1.1.x development line leading up to 1.2, provides more than a half-dozen minor fixes and enhancements. Note that the 1.1.x releases are "stable" and tested snapshots of the trunk. They can be seen as sub-milestones on the road towards Trac 1.2. As opposed to maintenance releases, *we offer no guarantees on feature and API compatibility from one 1.1.x release to the next*. However, by following 1.1.x you get a chance to use new features earlier, and therefore be able to contribute feedback when things are still in flux. It's also less risky than just getting the latest trunk, as we won't cut a 1.1.x release in the middle of a series of changes (though we had and still intend to have a good record of keeping things always working on trunk). The intended audience are therefore enthusiast Trac users and Trac plugin developers. These packages should *not* be integrated in distributions, for example. The fixes made for 1.0.7 are also included. You can find all the detailed release notes at: - http://trac.edgewall.org/wiki/TracDev/ReleaseNotes/1.1#DevelopmentReleases - http://trac.edgewall.org/wiki/TracDev/ReleaseNotes/1.0#MaintenanceReleases Download URLs: http://download.edgewall.org/trac/Trac-1.1.6.tar.gz http://download.edgewall.org/trac/Trac-1.1.6.win32.exe http://download.edgewall.org/trac/Trac-1.1.6.win-amd64.exe http://download.edgewall.org/trac/Trac-1.1.6.zip MD5 sums: 0f96a95a3e8a92e7a694883c929b2fa2 Trac-1.1.6.tar.gz 55c9dbb5ee430d139d0195eb9a056146 Trac-1.1.6.win32.exe 4d42dcbedafcfeba30a8be6d8a02ab4c Trac-1.1.6.win-amd64.exe fdf6f5e7653ae84cd2c8f14ac6475dc2 Trac-1.1.6.zip SHA1 sums: 0f4b3cc3cb8a2ee6b649ee5c4cf502f4f1f213e3 Trac-1.1.6.tar.gz d1273671ab354ea97efbc0a78bf03a0b86125399 Trac-1.1.6.win32.exe 13e5f23e940bf9eaef9cb9261e0e6b5b87da21c6 Trac-1.1.6.win-amd64.exe 99b98f716f38eda3fdacf4ab7221e0d381d41418 Trac-1.1.6.zip Enjoy! - The Trac Team http://trac.edgewall.org/

6 years, 6 months

Trac 1.0.7 Released

by Ryan Ollos

Trac 1.0.7 Released =================== Trac 1.0.7, the latest maintenance release for the current stable branch, is now available! You will find this release at the usual places: http://trac.edgewall.org/wiki/TracDownload#LatestStableRelease https://pypi.python.org/pypi/Trac/1.0.7 Trac 1.0.6 was release on the 20th of May and we've provided over a dozen fixes and minor enhancements since then. A few highlights from this release: - Custom svn:keywords definitions are expanded in Subversion 1.8 and later (#11364). - Fixed MySQL performance regression in query with custom fields (#12113). You can find the detailed release notes for 1.0.7 on the following pages: http://trac.edgewall.org/wiki/TracDev/ReleaseNotes/1.0#MaintenanceReleases Now to the packages themselves: URLs: http://download.edgewall.org/trac/Trac-1.0.7.tar.gz http://download.edgewall.org/trac/Trac-1.0.7.win32.exe http://download.edgewall.org/trac/Trac-1.0.7.win-amd64.exe http://download.edgewall.org/trac/Trac-1.0.7.zip MD5 sums: 3a985c743f3125f69f0334740b931f7d Trac-1.0.7.tar.gz 6e18cd990b44106f669b1db7b1c90aa6 Trac-1.0.7.win32.exe 30ddeda925dec5757a80efd9f4e35e66 Trac-1.0.7.win-amd64.exe 7c5a7361e565bd5d26b302f5857172aa Trac-1.0.7.zip SHA1 sums: d1dfb226b65b2b7e72f5da2d2a0bf6343f96728 Trac-1.0.7.tar.gz 95287e736836f783f823e27ab7c84f833f8365a0 Trac-1.0.7.win32.exe d06ee85b59229b8567e427b96ba8f0d1978bc45f Trac-1.0.7.win-amd64.exe 987ed0a80438e6e14a56b0e4a1341daafdbc1ce7 Trac-1.0.7.zip Acknowledgements ================ Many thanks to the growing number of people who have, and continue to, support the project. Also our thanks to all people providing feedback and bug reports that helps us make Trac better, easier to use and more effective. Without your invaluable help, Trac would not evolve. Thank you all. Finally, we offer hope that Trac will prove itself useful to like-minded programmers around the world, and that this release will be an improvement over the last version. Please let us know. /The Trac Team http://trac.edgewall.org/

6 years, 6 months

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Python-announce-list July 2015