Python-announce-list June 2016

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Flake8 3.0.0b1 Available on PyPI
by Ian Cordasco 26 Jun '16

26 Jun '16

What is Flake8? =============== Flake8 is a command-line tool to help developers enforce a style guide for their project. It uses pycodestyle to enforce PEP 8's style guide, pyflakes to lint the code base, and mccabe to provide complexity enforcement. What's new in 3.0.0b1? ====================== See our release notes: http://flake8.pycqa.org/en/latest/release-notes/3.0.0.html Installation =========== You can install 3.0.0b1 from PyPI, simply use either: pip install flake8==3.0.0b1 or pip install --pre flake8 This breaks my plugin ===================== We're tracking which plugins are broken by this release on https://gitlab.com/pycqa/flake8/issues/149 and I am submitting pull requests to help those authors adapt their plugins for 2.x and 3.x compatibility. Please test this version and report any problems you find with it. Thank you! Ian Cordasco PyCQA founder Flake8 maintainer

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PyDev 5.1.2 Released
by Fabio Zadrozny 24 Jun '16

24 Jun '16

Release Highlights: ------------------------------- * **Important** PyDev now requires Java 8 and Eclipse 4.5 onwards. * PyDev 4.5.5 is the last release supporting Java 7 and Eclipse 3.8. * See: http://www.pydev.org/update_sites/index.html for the update site of older versions of PyDev. * See: the **PyDev does not appear after install** section on http://www.pydev.org/download.html for help on using a Java 8 vm in Eclipse. * The pytest integration was redone and should now work properly with the latest pytest. * Properly showing output of tests in PyUnit view. * Improved dealing with items filtered through Ctrl+F9. * Better support for xdist (no longer reporting that the session finished when only a slave finished). * Reporting skipped items as "skip" and not "ok". * Properly showing running tests on PyUnit view. * Not using tokenize.open() in Python 3.2 for the execfile custom implementation. * Expand and collapse keybindings changed to use the Numpad entries (so that they don't override the add/subtract used for zooming). #PyDev 695. * The hover in PyDev has an implementation which is now more flexible and easier to extend in plugins (patch by Mark A. Leone). What is PyDev? --------------------------- PyDev is an open-source Python IDE on top of Eclipse for Python, Jython and IronPython development. It comes with goodies such as code completion, syntax highlighting, syntax analysis, code analysis, refactor, debug, interactive console, etc. Details on PyDev: http://pydev.org Details on its development: http://pydev.blogspot.com What is LiClipse? --------------------------- LiClipse is a PyDev standalone with goodies such as support for Multiple cursors, theming, TextMate bundles and a number of other languages such as Django Templates, Jinja2, Kivy Language, Mako Templates, Html, Javascript, etc. It's also a commercial counterpart which helps supporting the development of PyDev. Details on LiClipse: http://www.liclipse.com/ Cheers, -- Fabio Zadrozny ------------------------------------------------------ Software Developer LiClipse http://www.liclipse.com PyDev - Python Development Environment for Eclipse http://pydev.org http://pydev.blogspot.com PyVmMonitor - Python Profiler http://www.pyvmmonitor.com/

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RSFile v2.1 released
by Pascal Chambon 23 Jun '16

23 Jun '16

Dear pythoneers, I'm pleased to announce a major update of the RSFile I/O Library: version 2.1. RSFile provides drop-in replacements for the classes of the*io *module, and for the *open()* builtin. Its goal is to provide a cross-platform, reliable, and comprehensive synchronous file I/O API, with advanced features like fine-grained opening modes, shared/exclusive file record locking, thread-safety, cache synchronization, file descriptor inheritability, and handy stat getters (size, inode, times...). Possible use cases for this library: concurrently writing to logs without ending up with garbled data, manipulating sensitive data like disk-based databases, synchronizing heterogeneous producer/consumer processes when multiprocessing semaphores aren't an option... Unix users might particularly be interested by the workaround that this library provides, concerning the weird semantic of fcntl() locks (when any descriptor to a disk file is closed, the process loses ALL locks acquired on this file through any descriptor). RSFile has been tested with py2.7 and py3.3+, on Windows/Linux systems, and should theoretically work on other *nix systems and python implementations The technical documentation of RSFile includes a comprehensive description of concepts and gotchas encountered while developing this library, which could be useful to anyone interested in getting in touch with gory file I/O details. The implementation is currently pure-python, so if you need high performances, using standard python streams in parallel will remain necessary. /Why v2.1 and not v2.0 you ask ? Just some pypi constraints I wasn't aware of, that'll teach me not to erase a just-released version to add some cleanup commits to it.../ Downloads: https://pypi.python.org/pypi/RSFile/2.1 Documentation: http://rsfile.readthedocs.io/en/latest/ Repository: https://github.com/pakal/rsfile _CHANGELOG:_ * Switch from Mercurial to Git * Remove python2.6 support and its polyfills * Move backends and test suites inside rsfile package * Conform rsfile to the behaviour of latest "io" module and "open" builtin * Make rsfile work against py33, py34 and py35, by leveraging their stdlib test suites * Rename "win32" to "windows" everywhere (even pywin32 extensions actually handle x64 system) * Improve the I/O benchmark runner * Cache decorated methods to boost performances * Add support for the new "x" mode flag in rsopen() * Fix the corner case of uninitialized streams * Tweak the excessive verbosity of locking tests * Handle exceptions when closing raw streams (stream is marked as closed anyway) * Normalize the naming of backend modules * Fix bugs with __getattr__() lookup forwarding * Use C/N flags for file existence on opening (-/+ supported but deprecated) * Automatically compare the behaviour of all possible open modes, between stdlib/io and rsfile * Autogenerate equivalence matrix for file opening modes, using python-tabulate. * Switch from distutils to setuptools for setup.py * Add support for the new "opener" parameter of open() builtin * Strengthen tests around fileno/handle reuse and duplication * Fix bug regarding improper value of file "modification_time" on windows * Add implicit flush() before every sync() * Remove heavy star imports from pywin32 backend * Roughly test sync() parameters, via performance measurements * Rename file "uid()" to "unique_id()", to prevent confusion with "user id" (but an alias remains) * Fix nasty bug where file unique_id could be None in internal registries * Add lots of defensive assertions * Make FileTimes repr() more friendly * Add support for the wrapping of [non-blocking] pipes/fifos * Reject the opening of directories properly * Reorganize and cleanup sphinx docs * Improve docstrings of added/updated methods/attributes * Explain the file locking semantic better * Update and correct typos in the "I/O Overview" article * Document lots of corner cases: thread safety, reentrancy, sync parameters, file-share-delete semantic... * Remove the now obsolete "multi_syscall_lock" (thread-safe interface does better) * Integrate tests and doc building with Tox * Fix bug with windows/ctypes backend on python3.5 (OVERLAPPED structure was broken) * Add tests for the behaviour of streams after a fork() * Add optmizations for systems without fork (no need for multiprocessing locks then) * Normalize "__future__" imports and code formatting * Review and document the exception types used * Cleanup/DRY tons of obsolete TODOs and comments * Better document the CAVEATS of rsfile, regarding fcntl and interoperability with other I/O libs * Add standard files to the repository (readme, contributing, changelog etc.) * Integrate with Travis CI * Add some tweaks to mimick the more tolerant behaviour of python2.7 open(), regarding the mixing of str and unicode * Add script for aggregate coverage reporting * Strengthen tests of rsopen() usage errors regards, Pascal Chambon

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ANN: Astropy v1.2 released
by Thomas Robitaille 23 Jun '16

23 Jun '16

Dear colleagues, We are very happy to announce the v1.2 release of the Astropy package, a core Python package for Astronomy: http://www.astropy.org Astropy is a community-driven Python package intended to contain much of the core functionality and common tools needed for astronomy and astrophysics. New and improved major functionality in this release includes: * A new class to compute Lomb-Scargle periodograms efficiently using different methods. * A number of new statistics functions including those for Jackknife resampling, circular statistics, and the Akaike and Bayesian information criteria. * Support for getting the positions of solar system bodies in the coordinates sub-package. * The ability to compute Barycentric and Heliocentric light-travel time corrections. * Support for offset coordinate frames, which can be used to define a coordinate system relative to a known position and rotation. * An implementation of the zscale algorithm to determine image limits automatically. * Support for bolometric magnitudes in the units package. * Improvements to the NDData class and subclasses. * Auto-downloading of IERS tables as needed, which gives information about Earth orientation parameters necessary for high precision coordinate calculations and conversions to/from the UT1 scale. In addition, hundreds of smaller improvements and fixes have been made. An overview of the changes is provided at: http://docs.astropy.org/en/stable/whatsnew/1.2.html Instructions for installing Astropy are provided on our website, and extensive documentation can be found at: http://docs.astropy.org If you make use of the Anaconda Python Distribution, you can update to Astropy v1.2 with: conda update astropy If you normally use pip, you can upgrade with: pip install astropy --upgrade Note that if you install now you should get Astropy v1.2.1, as some last-minute bug fixes were found and fixed after the v1.2 release was created but before this announcement. Please report any issues, or request new features via our GitHub repository: https://github.com/astropy/astropy/issues Over 190 developers have contributed code to Astropy so far, and you can find out more about the team behind Astropy here: http://www.astropy.org/team.html As a reminder, Astropy v1.0 (our long term support release) will continue to be supported with bug fixes until Feb 19th 2017, so if you need to use Astropy in a very stable environment, you may want to consider staying on the v1.0.x set of releases (for which we have recently released v1.0.10). If you use Astropy directly for your work, or as a dependency to another package, please remember to include the following acknowledgment at the end of papers: “This research made use of Astropy, a community-developed core Python package for Astronomy (Astropy Collaboration, 2013).” where (Astropy Collaboration, 2013) is a reference to the Astropy paper: http://dx.doi.org/10.1051/0004-6361/201322068 Please feel free to forward this announcement to anyone you think might be interested in this release! Erik Tollerud, Tom Robitaille, Kelle Cruz, and Tom Aldcroft on behalf of The Astropy Collaboration

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EuroPython 2016 Conference App - Ready for installation
by M.-A. Lemburg 22 Jun '16

22 Jun '16

We are proud to announce our very own mobile app for the EuroPython 2016 conference: *** EuroPython 2016 Conference App *** https://ep2016.europython.eu/en/events/conference-app/ Engage with the conference and its attendees -------------------------------------------- The mobile app gives you access to the conference schedule (even offline), helps you in planing your conference experience and provides a rich social engagement platform for all attendees. You can create a profile within the app (or link this to your existing social accounts), share messages and photos, and easily reach out to other fellow attendees. Vital for all EuroPython attendees ---------------------------------- We’d like to make use of the app to keep you updated by sending regular updates of the schedule and inform you of important announcements via push notifications, so please consider downloading it. Thanks. With gravitational regards, -- EuroPython 2016 Team http://ep2016.europython.eu/ http://www.europython-society.org/ PS: Please forward or retweet to help us reach all interested parties: https://twitter.com/europython/status/745593770561933313 Thanks.

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EuroPython 2016: Conference Dinner and Party - Tickets available
by M.-A. Lemburg 20 Jun '16

20 Jun '16

We all know that good food, drinks and music are essential for a perfect EuroPython conference and so we’ve arranged a nice dinner with local food and a party for Tuesday evening (July 19th). *** EuroPython Conference Dinner and Party *** https://ep2016.europython.eu/en/events/social-event/ If you want to join the fun, please go to the social event page, and then proceed to the registration form (the same you use to buy conference tickets). There’s a new entry available now called “Pyntxos Social Event” which you can order using the form. Leave the conference tickets fields blank if you only want to purchase social event tickets. *** Buy Social Event Tickets *** https://ep2016.europython.eu/p3/cart/ We have 550 tickets available for the conference dinner and party, so please book early. The tickets are valid for one person. Please see the social events page for details of what is included in the ticket price. With gravitational regards, -- EuroPython 2016 Team http://ep2016.europython.eu/ http://www.europython-society.org/ PS: Please forward or retweet to help us reach all interested parties: https://twitter.com/europython/status/744884976940945408 Thanks.

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ANN: psutil 4.3.0 released
by Giampaolo Rodola' 19 Jun '16

19 Jun '16

Hello all, I'm glad to announce the release of psutil 4.3.0: https://github.com/giampaolo/psutil/ About ===== psutil (process and system utilities) is a cross-platform library for retrieving information on running processes and system utilization (CPU, memory, disks, network) in Python. It is useful mainly for system monitoring, profiling and limiting process resources and management of running processes. It implements many functionalities offered by command line tools such as: ps, top, lsof, netstat, ifconfig, who, df, kill, free, nice, ionice, iostat, iotop, uptime, pidof, tty, taskset, pmap. It currently supports Linux, Windows, OSX, Sun Solaris, FreeBSD, OpenBSD and NetBSD, both 32-bit and 64-bit architectures, with Python versions from 2.6 to 3.5 (users of Python 2.4 and 2.5 may use 2.1.3 version). PyPy is also known to work. Main features / fixes =============== - #819: [Linux] different speedup improvements: Process.ppid() is 20% faster Process.status() is 28% faster Process.name() is 25% faster Process.num_threads is 20% faster on Python 3 - #810: [Windows] Windows wheels are incompatible with pip 7.1.2. - #812: [NetBSD] fix compilation on NetBSD-5.x. - #823: [NetBSD] virtual_memory() raises TypeError on Python 3. - #829: [UNIX] psutil.disk_usage() percent field takes root reserved space into account. - #816: [Windows] fixed net_io_counter() values wrapping after 4.3GB in Windows Vista (NT 6.0) and above using 64bit values from newer win APIs. Links ==== - Home page: https://github.com/giampaolo/psutil - Downloads: https://pypi.python.org/pypi/psutil - Documentation: http://pythonhosted.org/psutil/ -- Giampaolo - http://grodola.blogspot.com

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Wing IDE 5.1.12 released
by Wingware Sales 17 Jun '16

17 Jun '16

Hi, Wingware has released version 5.1.12 of Wing IDE, our cross-platform integrated development environment for the Python programming language. Wing IDE features a professional code editor with vi, emacs, visual studio, and other key bindings, auto-completion, call tips, context-sensitive auto-editing, goto-definition, find uses, refactoring, a powerful debugger, version control, unit testing, search, project management, and many other features. This release includes the following minor improvements: Updated German localization (thanks to Christoph Heitkamp) Fixed Configure Project for Django to work if Start Django Project was not used first Don't show deprecation warnings for inspect.getargspec for debug processes and Python Shell running with Python 3.5 Fixed failure to analyze files in the background 8 other minor bug fixes For details see http://wingware.com/news/2016-06-17 and http://wingware.com/pub/wingide/5.1.12/CHANGELOG.txt What's New in Wing 5.1: Wing IDE 5.1 adds multi-process and child process debugging, syntax highlighting in the shells, support for pytest, Find Symbol in Project, persistent time-stamped unit test results, auto-conversion of indents on paste, an XCode keyboard personality, support for Flask, Django 1.7 to 1.9, Python 3.5, and recent Google App Engine versions, improved auto-completion for PyQt, recursive snippet invocation, and many other minor features and improvements. Free trial: http://wingware.com/wingide/trial Downloads: http://wingware.com/downloads Feature list: http://wingware.com/wingide/features Sales: http://wingware.com/store/purchase Upgrades: https://wingware.com/store/upgrade Questions? Don't hesitate to email us at support(a)wingware.com. Thanks, -- Stephan Deibel Wingware | Python IDE The Intelligent Development Environment for Python Programmers wingware.com

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[ANN] Pythran 0.7.5 is out
by serge guelton 16 Jun '16

16 Jun '16

(sorry for the double posting, if any) Dear pythraners and pythonists, The Pythran team (still 2 active developers) is delighted to announce the release of Pythran 0.7.5, available on the traditional channels: - pypi: https://pypi.python.org/pypi/pythran - conda: https://anaconda.org/serge-sans-paille/pythran - github: https://github.com/serge-sans-paille/pythran What is it? =========== Pythran is a static compiler for numerical kernels written in Python + Numpy. It basically turns Python-compatible modules into native ones, eventually vectorized and parallelized. Example ======= Following the tradition, each release comes with a code sample. This one comes from http://jakevdp.github.io/blog/2012/08/24/numba-vs-cython/ #pythran export pythran_pairwise(float64 [][]) import numpy as np def pythran_pairwise(X): return np.sqrt(((X[:, None, :] - X) ** 2).sum(-1)) This kernel relies a lot on Numpy's broadcasting, but Pythran can now compile it efficiently, which is a really nice improvement! It can rip (without vectorization and parallelization turned on) more than a x5 speedup over the Numpy version \o/ More Infos ========== We have published some technical details about Pythran internal on the blog: http://serge-sans-paille.github.io/pythran-stories/ It is open to third-party contribution! Changelog ========= * Better Jupyter Note book integration * Numpy Broadcasting support * Improved value binding analysis * Simple inlining optimization * Type engine improvement * Less fat in the generated modules * More and better support for various Numpy functions * Various performance improvement * Global variable handling, as constants only though Acknowledgments =============== Thanks a lot to Pierrick Brunet for his dedicated work, and to all the bug reporters and patch providers that helped a lot for this release: nils-werner, ronbarak, fred oble, geekou, hainm, nbecker and xantares.

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[ANN] iPOPO 0.6.4
by Thomas Calmant 14 Jun '16

14 Jun '16

iPOPO 0.6.4 =========== iPOPO v0.6.4 has been released ! What is iPOPO ============= iPOPO is a Service-Oriented Component Model (SOCM) based on Pelix, a dynamic service platform. Both are inspired on two popular Java technologies for the development of long-lived applications: the iPOJO component model and the OSGi Service Platform. iPOPO enables to conceive long-running and modular IT services. It is based on the concepts specified by OSGi: - Bundle: a Python module imported using Pelix and associated to a context. A bundle has a life-cycle (install, start, updated, stop, uninstall) - Service: a Python object registered in a service registry, associated to a specification and to properties. - Component: the instance of a class described/manipulated by iPOPO decorators Components are bound together by the specification(s) of the service(s) they provide. The required services are injected into components by iPOPO. For more information, see https://ipopo.coderxpress.net/wiki/doku.php?id=ipopo:refcards:concepts iPOPO provides many services out-of-the-box, like an HTTP server, local and remote shell, remote services... iPOPO is released under the terms of Apache Software License 2.0 What's new in 0.6.4 =================== This version adds a log service, allowing access to the traces logged with either this service or the logging module. It also two handlers: - @HiddenProperty, which allows a component to hide some of its information from the decription API - @RequiresVariableFilter, which allows to use component properties in the requirement filter Basic support for a HTTPS server has been added. It shouldn't be used for Remote Services. What's coming in 0.6.5 ====================== Version 0.6.4 took a year to be released, but the next release should come earlier. Version 0.6.5 will try to tune the HTTP service to ease the development of the Pelix Web Console, a side project which could become handy. The HTTPS support will be enhanced as well during this step. You can take a look at the documentation at https://ipopo.coderxpress.net/ iPOPO is available on PyPI: https://pypi.python.org/pypi/iPOPO Source is available on GitHub: https://github.com/tcalmant/ipopo Feel free to send feedback on your experience of Pelix/iPOPO, via the mailing lists: User list : http://groups.google.com/group/ipopo-users Development list : http://groups.google.com/group/ipopo-dev Have fun ! Thomas

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Python-announce-list June 2016