BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:A Lucene-based cataloging solution for Zope-3 and CPS-3.4 DTSTART;VALUE=DATE-TIME:20060704T120000Z DTEND;VALUE=DATE-TIME:20060704T123000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-24@cern.ch DESCRIPTION:Speakers: Mr. ANGUENOT\, Julien (Nuxeo SAS)\nLucene is an open source project from the Apache Software Foundation\nwritten in Java. This is a high-performance\, full-featured text search\nengine library.\n\nNXL ucene\, from Nuxeo SAS\, is a multi-threaded remote server handling\nLucen e stores. It takes advantage of the freaking fast PyLucene\nPython binding s and uses Twisted for its implementation. It uses some\nparts of the Zope 3 component architecture as well. NXLucene currently\nsupports the XML-RPC and SOAP protocols. (Its roadmap even includes an\nICE connector for the 1.x branch.) As well\, NXlucene might be seen as\na good example of what c ould be achieved using the best parts of\ndifferent worlds (Java Lucene\, PyLucene\, Zope3\, Twisted\,...).\n\nnuxeo.lucene is a cataloging componen t integrated to the Zope3\napplication server currently offering an xml-rp c proxy to an NXLucene\nremote server. As well\, It offers an abstraction for Python objects'\ncataloging strategy providing the ability to specify how Python\nobjects should be indexed and retrieved from a Lucene store th rough\nNXLucene. (It is important to note here that any remote server\npro viding an XML-RPC remote interface could be theoretically used.)\n\nCPSLuc eneCatalog is a CPS-3.4.x specific product adding the CPS\nspecific busine ss rules to nuxeo.lucene. For example\, it takes\ncare of the way differen t versions of CPS documents should be indexed.\nCPSLuceneCatalog is a comp lete substitute for the ZCatalog which is\nshowing its limits when dealing with millions of objects within the\nZODB. CPSLuceneCatalog will be shipp ed along with the next major\nrelease of CPS\, version 4\, along with the JackRabbit JCR repository.\n\nThe result is a big win on large scale deplo yments: \n\n - Indexing and searching are much faster and more scalable co mpared to ZCatalog\n - Indexing and searching are much more powerful than with ZCatalog\n - (Analysis\, ranking\, etc...) \n - Zope global performa nce is increased because Zope no longer deals\n with the indexing and se arching business.\n\nNXLucene is an open source project under the LGPL.\nn uxeo.lucene is an open source project available under the ZPL.\nCPSLuceneC atalog is an open source project available under the GPL.\n\nFor more info rmation: \n\n - CPS Project: http://www.cps-project.org\n - Zope3: http:// dev.zope.org/Zope3\n - Apache Lucene: http://lucene.apache.org/java/docs/i ndex.html\n - PyLucene: http://pylucene.osafoundation.org\n - NXLucene: ht tp://www.cps-project.org/sections/projects/nxlucene\n - nuxeo.lucene: http ://svn.nuxeo.org/trac/pub/browser/Zope3/nuxeo.lucene/trunk\n - CPSLuceneCa talog:\nhttp://svn.nuxeo.org/trac/pub/browser/CPS3/products/CPSLuceneCatal og/trunk\n - Nuxeo SAS: http://www.nuxeo.com\n\nhttp://indico.cern.ch/cont ributionDisplay.py?contribId=24&sessionId=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=24&sessionId=9& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Working Together on the Web DTSTART;VALUE=DATE-TIME:20060703T070000Z DTEND;VALUE=DATE-TIME:20060703T080500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-25@cern.ch DESCRIPTION:Speakers: Mr. DANGOOR\, Kevin (Blazing Things)\nPython's web e cosystem is richer than ever. For every part of the web application\nstack \, there are more choices than ever\, and there are more full-stack web fr ameworks\nthan ever. Every application has different requirements\, which makes choice useful.\nIn my talk\, I will discuss how the Python web lands cape has been changing and how\nit's possible to have choices and still av oid reinventing wheels and dividing up our\nefforts.\n\nhttp://indico.cern .ch/contributionDisplay.py?contribId=25&sessionId=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=25&sessionId=9& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:The Django Web Framework DTSTART;VALUE=DATE-TIME:20060703T090000Z DTEND;VALUE=DATE-TIME:20060703T093000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-26@cern.ch DESCRIPTION:Speakers: Mr. WILLISON\, Simon (Django)\nDjango is a Python we b framework designed to enable "web development with journalism\ndeadlines ". This talk will provide an overview of the framework\, discuss the\nenvi ronment in which it was developed and describe the evolution of the framew ork in\nthe year since it was first released.\n\nhttp://indico.cern.ch/con tributionDisplay.py?contribId=26&sessionId=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=26&sessionId=9& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Ajax\, state of the art DTSTART;VALUE=DATE-TIME:20060703T070000Z DTEND;VALUE=DATE-TIME:20060703T073000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-27@cern.ch DESCRIPTION:Speakers: Mr. ZIADÉ\, Tarek (Nuxeo)\nAjax has played an impor tant role over the last months on improving\nthe user experience over web interfaces.\n\nBesides all the buzz around Ajax and Web 2.0 related techno logies\,\nnumerous Javascript libraries have started to consolidate some\n coding patterns and to provide usable features.\n\nThis presentation is a state of the art of Ajax related technology\, and\npresents what web devel opers can benefit from it\, with considerations\nabout accessibility (WAI) and ergonomics matters\, but also with a focus\non Javascript TDD (Test D riven Development) and continuous integration\nin a Python environment.\n\ nLast but not least\, the presentation will focus on Ajax uses cases\nfor ECM (Entreprise Content Managment) and CMS (Content Managment System)\nsys tems\, and implementations examples\, taken from Nuxeo CPS.\n\nReferences: \n http://blogs.nuxeo.com/sections/blogs/tarek_ziade/archive_view?categ ory=AJAX\n http://cps-project.org\n\nhttp://indico.cern.ch/contribution Display.py?contribId=27&sessionId=53&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=27&sessionId=53 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Developing Ambient Displays for Collaborative Work DTSTART;VALUE=DATE-TIME:20060704T073500Z DTEND;VALUE=DATE-TIME:20060704T080500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-20@cern.ch DESCRIPTION:Speakers: Dr. MCCALL\, Rod (CRP- Gabriel Lippmann)\nThis paper discusses a prototype system known as the Ambient Workplace (AW) that\nle ts people monitor work patterns within a group of co-workers.\n\nThe AW pr ovides information in the user's peripheral attention zone with the\nobjec tive being that the user soaks up the information without needing to\nspec ifically attend to it. Information is displayed within standard\napplicat ions such as the Windows Active Desktop\, Outlook or Word. At present\nth e system displays various types of awareness information\, for example the \nnumber of interactions a specific user or group of users has initiated a nd\nwhether they are online. It also displays global information about the volume\nand type of work for the entire group. The Ambient Workplace uses Python and\ndisplays information using Scalable Vector Graphics (SVG). It uses a\nclient/server architecture built upon the XMPP instant messaging protocol and\nretrieves information from a MySQL database. The objective w as to build a system\nwhich can be easily ported to other platforms such a s mobile phones and smart\nboards as well as to leverage existing librarie s while allowing rapid\nprototyping of the user interface.\n\nhttp://indic o.cern.ch/contributionDisplay.py?contribId=20&sessionId=20&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=20&sessionId=20 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Implementation of a Transaction-based Peer-to-Peer Protocol DTSTART;VALUE=DATE-TIME:20060705T081000Z DTEND;VALUE=DATE-TIME:20060705T084000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-21@cern.ch DESCRIPTION:Speakers: Ms. NYGÅRD\, Sofia (Åbo Akademi University)\nThe p aper describes a lightweight implementation of a peer-to-peer protocol. Th e \nimplementation is intended as a testbed for ideas concerning the utili zation of the \npeer-to-peer paradigm. The protocol takes the Gnutella pro tocol as a starting \npoint\, although the present implementation differs from the Gnutella protocol \nregarding intent as well as routing solutions .\n\nThe protocol is implemented in Python since various data types and mo dules offered \nby Python make it possible to limit the code to a manageab le size. The GUI is \nimplemented with Tkinter. \n\nThe design has two sub stantial features. Firstly\, the protocol is transaction-\nbased. As a con sequence\, the pong messages are no longer required since every \nsuccessf ully transferred message\, independent of type\, is a sign that a node is \nactive. An adaptive ping algorithm further reduces the load on bandwidth . Secondly\, \nthere is only one entry point to the router. The way in whi ch the router \ncommunicates with the GUI is symmetrical to the way in whi ch it communicates with \nthe network. This means that the connections bet ween the router and the GUI are \ncharacterized by socket communication an d protocol messages. This results in a \nfairly independent user interface \, which creates a basis for further utilization of \npeer-to-peer systems .\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=21&sessionId=2 0&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=21&sessionId=20 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Bebop: A Zope3-based Groupware DTSTART;VALUE=DATE-TIME:20060703T131000Z DTEND;VALUE=DATE-TIME:20060703T134000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-22@cern.ch DESCRIPTION:Speakers: Dr. OESTERMEIER\, Uwe (IWM)\nBebop is an open source (GPL) groupware that tries to combine collaboration\nsupport and content management with a user-friendly interface. Group aspects\n(e.g. who is onl ine\, who works on what\, versioning conflicts\, etc.) are\nseamlessly int egrated into the user's local workspace. Bebop comes in two forms:\na web client for casual users\, and a standalone client for users with the need\ nfor professional editing tools.\n\nThe web client provides wiki\, blog\, news\, and repository views on Zope3 standard\ncontent objects. As an Aja x application it offers live search\, smart wiki links\nwith various edit options\, and WYSIWYG editing and merging. A two-way event\nnotification (cf. Nevow's LivePages) for Zope3 is under development. Although\nthe Ajax client feels in many respects like a standalone application\, it still\ns uffers from a limited integration with the desktop and editing tools. To\n overcome this major shortcoming of web-based applications a standalone cli ent\nwritten in wxPython will be the major focus of the Bebop project. Thi s client\nstores all content in the filesystem and shows in real time who' s online\, who's\nsharing the same point of view\, and visualizes all modi fications and versioning\nconflicts.\n\nThe paper will focus on Bebop's ar chitecture and sketch future developments.\n\nBebop: http.//svn.kmrc.de\nL ivePage: http://svn.zope.org/*checkout*/zope3org/trunk/src/zorg/live/READM E.txt\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=22&session Id=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=22&sessionId=9& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Deep Integration of Python with Semantic Web Technologies DTSTART;VALUE=DATE-TIME:20060705T073500Z DTEND;VALUE=DATE-TIME:20060705T080500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-23@cern.ch DESCRIPTION:Speakers: Mr. BABIK\, Marian (Institute of Informatics\, Slova k Academy of Sciences)\nThe Semantic Web is a vision for the future of the Web in which information is given\nexplicit meaning\, making it easier fo r machines to automatically process and\nintegrate the information availab le on the Web. The Semantic Web will build on the well known\nlanguage sta ck\, part of which is the Web Ontology Language (OWL).\n\nSemantic Python (SETH) is a software effort to deeply integrate python and the\ndescriptio n logic (DL) subset of the OWL\, i.e. extend python to seamlessly support a\nlogic programming paradigm. The deep integration of both languages intr oduces the\nnotion of importing the OWL-DL into the programming context so that OWL classes can\nbe used alongside classed defined normally. In this article we present a\nmetaclass-based implementation of the deep integrat ion ideas\, which is a promising\nway of achieving such integration. The i mplementation is an early Python prototype\nsupporting in-line class and p roperty declaration\, instance creation and simple\ntriple-based queries. The implementation is backed up by the well known OWL-DL reasoner\nPellet. The integration of the Python and OWL-DL through metaclass programming \n provides a unique approach\, which can extend the current python-based web frameworks\nand provide the needed support for the Semantic Web technolog ies.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=23&sessionI d=20&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=23&sessionId=20 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:CPSBayes\, a multipurpose naive bayesian classifier for Zope DTSTART;VALUE=DATE-TIME:20060704T073500Z DTEND;VALUE=DATE-TIME:20060704T080500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-28@cern.ch DESCRIPTION:Speakers: Mr. ZIADÉ\, Tarek (Nuxeo)\nNaive Bayesian classific ation is widely used in spam detection systems\, like\nSpamAssassin. CPSB ayes is a Zope 3 / Five product that provides a naive\nBayesian classifier tool over a CMF portal\, with a SQL backend storage.\n\nThis talk present s the tool and its primary use case: classifying incomings\nemails in them es\, before they become web documents sent in specific workflows.\n\nMoreo ver\, the presentation focuses on other uses of the tool for other tasks\n over a CMS (Content Managment System) or an ECM (Entreprise Content Managm ent)\nlike automatic filling of metadata.\n\nThis kind of automated task e nhances some features that often get less accurate\nwhen the document corp us grows because users never do those tasks (search\, etc.)\n\nhttp://indi co.cern.ch/contributionDisplay.py?contribId=28&sessionId=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=28&sessionId=9& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Achieving High Performance In Mercurial DTSTART;VALUE=DATE-TIME:20060704T070000Z DTEND;VALUE=DATE-TIME:20060704T073000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-29@cern.ch DESCRIPTION:Speakers: O'SULLIVAN\, Bryan (Mercurial)\nMercurial is a distr ibuted revision control system designed for performance and\nscalability. Although written in Python\, it is faster than most other revision\ncontr ol tools. This paper discusses the techniques used in Mercurial to achiev e such\nhigh performance\, and compares its performance on common operatio ns with three other\nrevision control systems: CVS\, Subversion\, and Perf orce. It also introduces some\nnovel software development techniques that are made possible by Mercurial's high\nperformance.\n\nhttp://indico.cern .ch/contributionDisplay.py?contribId=29&sessionId=49&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=29&sessionId=49 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Python and PostgreSQL - a match made in heaven DTSTART;VALUE=DATE-TIME:20060703T090000Z DTEND;VALUE=DATE-TIME:20060703T093000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-0@cern.ch DESCRIPTION:Speakers: Mr. MASSA\, Harald Armin (Na Zen Baer)\nPostgreSQL i s a heavenly match to Python. Both share the same kind of licence\,\nboth have an excellent community\, both work perfectly together.\n\nI will dest roy bad PostgreSQL myths\, give an overview of using PostgreSQL to\ninterf ace with Python\, and as a special feature show how to use Python inside\n PostgreSQL to write stored procedures.\n\nThe business aspect\, the possib ilites of rollout and also the availability on\nthe main plattforms will b e discussed.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=0&s essionId=41&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=0&sessionId=41& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Designing Unicode-aware Applications in Python DTSTART;VALUE=DATE-TIME:20060703T140000Z DTEND;VALUE=DATE-TIME:20060703T143000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-4@cern.ch DESCRIPTION:Speakers: Mr. LEMBURG\, Marc-André (eGenix.com)\nThe talk pre sents ways of designing Python applications to be Unicode-aware from\ngrou nd up.\n\nI've held the talk at the LSM 2005 conference in Dijon\, France and people were very\ninterested. You can download the PDF for a preview:\ n\nhttp://www.egenix.com/files/python/LSM2005-Developing-Unicode-aware-app lications-in-Python.pdf\n\nhttp://indico.cern.ch/contributionDisplay.py?co ntribId=4&sessionId=41&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=4&sessionId=41& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:On the usage of Python in the CERN Document Server's digital libra ry and conference management tools DTSTART;VALUE=DATE-TIME:20060704T123500Z DTEND;VALUE=DATE-TIME:20060704T130500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-87@cern.ch DESCRIPTION:Speakers: Mr. BARON\, Thomas (CERN)\, Mr. LE MEUR\, Jean-Yves (CERN)\nPython has been intensively used at CERN since 2001 by the CERN Do cument\nServer team to provide services in two areas:\n - Digital document management within the CDS Invenio application\, running\n on top of MyS QL DB\n - Digital conference management within the CDS Indico application\ , running on\n top of a ZOPE DB\; and currently used to run EuroPython 0 6!\n\n In this presentation\, after providing an overview of the usage and \n architecture of these two open source packages\, we will describe the\n technical options that have been selected after comparison with other\n s olutions. The choice of Python/MySQL versus Python/ZODB will be\n discusse d. Finally\, the role of the GNU Public Licensing in the evolution\n of CD S software with the creation of a world-wide consortium of\n developers wi ll be underlined.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribI d=87&sessionId=49&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=87&sessionId=49 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Lightning Talks DTSTART;VALUE=DATE-TIME:20060705T140000Z DTEND;VALUE=DATE-TIME:20060705T160000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-120@cern.ch DESCRIPTION:Speakers: \nhttp://indico.cern.ch/contributionDisplay.py?contr ibId=120&sessionId=12&confId=44 LOCATION:CERN\, Geneva Main Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=120&sessionId=1 2&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:"What not how" - Questionnaire development with Zope & Python DTSTART;VALUE=DATE-TIME:20060704T120000Z DTEND;VALUE=DATE-TIME:20060704T123000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-121@cern.ch DESCRIPTION:Speakers: Mr. CLARK\, Charlie ()\nComputers are well-suited fo r routine\, recurring tasks such as data entry.\nIn fields such as medicin e effective use can lead to considerable\nimprovements in productivity and patient care if doctors spend less time\nasking routine questions. As par t of a research project at the University\nof Aberdeen I have been investi gating possible systems. Any system should\nrequire as little maintenance by programmers as possible and should be\nconfigurable by managers\, altho ugh the data captured would only be required\nfor a doctor-patient intervi ew\, it should be stored in a reusable form.\n\nWhile there are several ve ry questionnaire systems around they are\ngenerally geared towards statist ical evaluation. Furthermore\, while\nproviding a great deal of flexibilit y in questionnaire and report layout\,\nthe data essentially remains locke d within the application. It was decided\nto develop a prototype to suppor t a generic\, data-driven approach with a\nRDBMS backend for connection wi th other systems.\n\nTo provide the greatest degree of flexibility the cor e part of the\napplication requires very little programming. Zope\, Python and PostgreSQL\nprovide a good environment for this kind of requirement: PostgreSQL ensures\ndata integrity\, Python is well-suited for writing bus iness rules\, Zope is\nan excellent environment for integration. As a resu lt most problems are of\na conceptional nature. Due to the highly specific nature of parts of the\nproject\, it is unlikely that the software will b e released.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=121& sessionId=49&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=121&sessionId=4 9&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Index & Search: itools.catalog DTSTART;VALUE=DATE-TIME:20060703T093500Z DTEND;VALUE=DATE-TIME:20060703T100500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-122@cern.ch DESCRIPTION:Speakers: Mr. BELMAR-LETELIER\, Luis (Itaapy)\nThere are not m any solutions for indexing and searching in Python. Among\nthem itools.cat alog is the only one 100% Python and actively maintained.\n\nThis talk wil l explain the usage of itools.catalog.\n\nWe will also define its function al scope\, this is to say\, what it can do\nand what it cannot do. And we will put it in context with other solutions\navailable to Python.\n\nhttp: //indico.cern.ch/contributionDisplay.py?contribId=122&sessionId=41&confId= 44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=122&sessionId=4 1&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Liberlab\, a pocket lab for all DTSTART;VALUE=DATE-TIME:20060705T081000Z DTEND;VALUE=DATE-TIME:20060705T084000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-123@cern.ch DESCRIPTION:Speakers: Mr. SCHNELL\, Francois (ULP Multimedia)\nThe Open So urce project Liberlab aims to promote scientific experimentation \nthrough the creation and use of a digital lab at a very low cost ( 15 €/$). \n\ nIts modular and open design encourages original uses\, particularly in th e field of \neducation\, and can also be used to learn about robotics\, au tomation\, human-\nmachine interface or interactive arts.\n\nThe heart of the project is based on the ongoing improvements of \nmicrocontrollers. Th ese low price integrated circuits are like tiny and \nautonomous "computer s" used in many devices (DVD players\, cars\, etc.). \nInstead of using th em in an autonomous way Liberlab combines the computing \npower of a PC wi th the commands and measuring capabilities of the \nmicrocontroller.\n\nLi berlab is available under the free GPL licence with a GUI application (Tki nter) \nand a Python module to allow users to build their own programs usi ng Python.\n\nThe presentation will explain the technological choices for this project and show \nexamples of usages with Python modules like Vpytho n\, Xturtles and CherryPy.\n\nhttp://indico.cern.ch/contributionDisplay.py ?contribId=123&sessionId=52&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=123&sessionId=5 2&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Visualizing behavior of ambient sensor networks DTSTART;VALUE=DATE-TIME:20060703T123500Z DTEND;VALUE=DATE-TIME:20060703T130500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-55@cern.ch DESCRIPTION:Speakers: DE RIDDER\, Theo (Saxion Hogescholen)\nAmbient senso r networks represent distributed systems that challenge the\nillusion that Moore's law will always facilitate more complex software in the\nnear fut ure. The need for extreme low power consumption in myriads of miniscule\ns ensors is a driving force to reduce software again to its basics. It appea rs\nthat good old concepts enable new animals like hopping and gossiping\n nano-agents. But a lot of validating experiments are yet to be done to\nun derstand and control behavior of sensor clouds in realistic ambient\nenvir onments.\n\nThis talk is about a framework to simulate and monitor dynamic sensor-networks\nin 3D\, combining the capabilities of Blender\, numpy an d Python. Blender is used\nfor modeling and animating 3D worlds. Cluster b ehavior is represented in numpy\nas scalable matrix algebra similar to Mat lab. Python is the universal and\ntransparent glue for any component.\n\nh ttp://indico.cern.ch/contributionDisplay.py?contribId=55&sessionId=50&conf Id=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=55&sessionId=50 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:eXtremeManagement of projects with Plone DTSTART;VALUE=DATE-TIME:20060703T120000Z DTEND;VALUE=DATE-TIME:20060703T123000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-54@cern.ch DESCRIPTION:Speakers: Mr. VAN REES\, Maurits (Europython\, Zest Software)\ neXtremeManagement is a Plone product that helps in developing using the E xtreme\nProgramming methodology. It helps steer a project to success by a focus on planning\,\non estimating and on keeping a log of your hours wor ked. My colleagues and clients\nat Zest Software like it.\n\nGoals of the talk:\n\n- Get a feel for the planning and estimating parts of XP.\n\n- D emonstrate the eXtremeManagement product and show how it helps with this.\ n\n- Get improvement ideas for eXtremeManagement and probably for your own project\n management software.\n\nhttp://indico.cern.ch/contributionDisp lay.py?contribId=54&sessionId=53&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=54&sessionId=53 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Come on and plug me in! Writing and testing plugins for Bazaar DTSTART;VALUE=DATE-TIME:20060705T093500Z DTEND;VALUE=DATE-TIME:20060705T104000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-50@cern.ch DESCRIPTION:Speakers: Mr. COLLINS\, Robert (Canonical Limited)\, Mr. ALLOU CHE\, David (Canonical Limited)\nBazaar is a revision control system writt en entirely in Python.\nProgrammers can use Bazaar's plugin system to prov ide new options\,\nfeatures and facilities. We demonstrate writing a plugi n for Bazaar and\ndescribe what having a plugin system has done to and for Bazaar.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=50&sess ionId=24&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=50&sessionId=24 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Generating content types and workflow with ArchGenXML DTSTART;VALUE=DATE-TIME:20060703T101000Z DTEND;VALUE=DATE-TIME:20060703T104000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-52@cern.ch DESCRIPTION:Speakers: Mr. REES\, Reinout van (Zest software)\nFor many peo ple\, ArchGenXML is the most attractive way to get started with Plone\ndev elopment. Generating your content types from a UML class diagram is easy a nd\nfast\, especially as ArchGenXML sets up all the "bookkeeping code" for you: the\n__init__\, the Install.py\, etc. The presentation will cover th is and I'll also\nshow how to modify the generated code to your special ne eds.\n\nArchGenXML is great at generating a complete workflow out of UML s tate\ndiagrams. You get good code that hardly ever needs modification from a UML\ndiagram that you can readily show to your customer - and he'll be able to\nunderstand it (mostly). I'll show how to do this in the presentat ion.\n\nDepending on the improvements made on ArchGenXML I hope to show ou r support for\nzope3 goodies in plone 2.5.\n\nhttp://indico.cern.ch/contri butionDisplay.py?contribId=52&sessionId=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=52&sessionId=9& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Literate testing with doctests DTSTART;VALUE=DATE-TIME:20060703T090000Z DTEND;VALUE=DATE-TIME:20060703T093000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-115@cern.ch DESCRIPTION:Speakers: Mr. GEDMINAS\, Marius (Programmers of Vilnius)\nDoct ests are one way of writing automated tests in Python. Doctests can be use d for\nmany purposes. I will demonstrate (with examples) the use of docte sts for\ndocumentation\, design\, unit testing\, and functional/acceptance testing.\nI will show some interesting features of the doctest module suc h as pattern matching\nor diffing. I will show how to collect and aggrega te doctests into\nunittest-compatible test suites. I will talk about cert ain caveats and demonstrate\nsome useful techniques for writing the tests themselves.\n\nAbout the author: Marius has been writing Python code for t he last 4.5 years\nnon-stop. He is deeply convinced about the gains of au tomated tests\, and thinks that\nif you do not already write doctests for your Python code\, then you should start doing so.\n\nhttp://indico.cern.c h/contributionDisplay.py?contribId=115&sessionId=53&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=115&sessionId=5 3&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Agile customer management: successes and failures DTSTART;VALUE=DATE-TIME:20060705T131000Z DTEND;VALUE=DATE-TIME:20060705T134000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-114@cern.ch DESCRIPTION:Speakers: Ms. KESMINAITE\, Aiste (Programmers of Vilnius)\nI w ill talk about our company's experience in applying certain XP practices w hen\ndealing with clients\, how different clients understand these practis es and react to\nthem and what kind of problems we have trying to explain and apply XP. \n\nAbout the author: Aistė Kesminaitė is the managing dir ector of a young but already\ndistinguished team of software engineers fro m Lithuania. She and her team use XP and\nother agile practises for most a spects of the business.\n\nhttp://indico.cern.ch/contributionDisplay.py?co ntribId=114&sessionId=53&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=114&sessionId=5 3&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Dual Scripting in a Virtual Reality Engine. Embedding Python in XV R DTSTART;VALUE=DATE-TIME:20060705T123500Z DTEND;VALUE=DATE-TIME:20060705T130500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-88@cern.ch DESCRIPTION:Speakers: Mr. RUFFALDI\, Emanuele (PERCRO Lab\, Scuola S.Anna\ , Pisa)\, Mr. APRILE\, Walter (PERCRO Lab\, Scuola S.Anna\, Pisa)\nIn this talk we present the embedding of Python inside the eXtreme Virtual\nReali ty (XVR) Engine. XVR is an advanced and lightweight system for the develop ment\nof Virtual Reality applications both for the Web and for 3D Immersiv e systems. \n\nThis system has been extensively used in European Projects for the construction of\nhigh quality 3D graphic applications enhanced wit h VR devices. XVR applications are\nwritten in the S3D scripting language and compiled into a bytecode representation\nexecuted by the XVR Virtual M achine. The scripting language and the virtual machine\nare specialized an d optimized for the manipulation of 3D entities and efficient\nobject orie nted programming.\n\nThe XVR system allows to develop and deploy 3D applic ation easily by asking\nthe developer only to write the core rendering loo p and place the application in a\nWeb page. The XVR Engine provides native ly a set of classes for creating Virtual\nReality applications ranging fro m 3D graphics (both high level classes and low level\nOpenGL functions)\, 3D sound and physics. Moreover it is possible to extend such\nfeatures wit h external native modules providing the support for new devices\,\nsimulat ion engines or rendering techniques. At runtime the external modules are\n loaded and their classes integrated in the system namespace.\n\nPYXVR is a XVR extension that allows to embed a Python script inside a XVR\napplicat ion or\, putting it in another way\, write a Virtual Reality application u sing\nthe XVR Engine features. Typically the XVR application loads the PYX VR extension\,\nexecutes the scripts and invokes Python in response to the rendering (OnFrame) and\nanimation (OnTimer) events of the XVR Engine. \n \nThe result is a dual script environment in which the two scripting engin es cooperate\nfor providing the best of the two worlds. The Python scripts are able to access all\nthe functions and classes defined by XVR (both sc ripted and native)\, while the XVR\nscript accesses the Python scripts thr ough the eval and callback functions\n\nThere are some advantages to using Python inside a XVR application. First there is\nthe possibility of modif ying and extending the application using the script\, because\nthe XVR app lication is completely defined at compilation time. Then there is the\npos sibility of using the Python libraries and multi-threading for enhancing t he\nXVR application. Despite the advantages there are some drawbacks that should be\ntaken into account. First there is the aspect of security. XVR applications are\ntypically executed in the Web Browser and the XVR classe s respect the security\nrequirements of this environment. The PYXVR extens ion allows the unrestricted import\nof modules and for this reason it is c urrently limited to local XVR applications. The\nsecond disadvantage of PY XVR for 3D Web application is the weight of the Python\nengine whose core shared library is in the order of one megabyte\, a size that is\nequivalen t to the whole XVR engine comprising the Virtual Reality features.\nWith r egards to the execution speed\, the S3D scripts are faster than\nthe Pytho n ones in managing objects and external entities because during the\noff-l ine compilation of the script all the names and functions are known and en coded\nin the byte-code. The simpler type space of S3D provides also addit ional\noptimizations when dealing with 3D entities.\n\nThe talk discusses the overall PYXVR extension\, the aspects of integration\nbetween the two environments\, the multi-threaded features and finally a performance\neval uation of this solution.\n\nConcluding\, the PYXVR extension presented in this talk can be used by XVR\ndevelopers for enhancing their XVR applicati ons and at the same time by Python\ndevelopers for the fast prototyping of Virtual Reality applications.\n\nInformation about XVR can be found at ht tp://www.vrmedia.it\nMore information on PYXVR will be shortly provided on :\nhttp://wiki.vrmedia.it/index.php?title=PYXVR\n\nhttp://indico.cern.ch/c ontributionDisplay.py?contribId=88&sessionId=24&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=88&sessionId=24 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Taming the beast: Using Python to Control ATLAS Software DTSTART;VALUE=DATE-TIME:20060703T140000Z DTEND;VALUE=DATE-TIME:20060703T143000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-116@cern.ch DESCRIPTION:Speakers: QUARRIE\, David (LBNL)\nATLAS\, one of the four expe riments at the CERN LHC accelerator\, uses the\nAthena/Gaudi component arc hitecture to build and run its software\napplications. Python was initiall y introduced as a configuration language for\nthe hundreds of C++ componen ts\, but soon\, thanks to the development of a\npowerful C++ binding layer \, it started pervading all application domains from\njob management\, to application control to interactive analysis. In this talk we\nwill survey both successes and challenges brought by the introduction of Python\nand w e will discuss our ongoing efforts to use the flexibility of Python to mak e\neasier and safer for ATLAS physicists to build\, configure and run thei r\napplications.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId =116&sessionId=50&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=116&sessionId=5 0&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Interfacing Python and the C++ Frameworks used by High Energy Phys icists DTSTART;VALUE=DATE-TIME:20060703T143500Z DTEND;VALUE=DATE-TIME:20060703T150500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-111@cern.ch DESCRIPTION:Speakers: Dr. MATO\, Pere (CERN)\nIn this paper we present the developments in the area of interfacing Python with\nlarge-scale C++ fram eworks\, driven by the needs of the new generation of High\nEnergy Physics experiments currently in preparation at CERN. \n\nThe physics software be ing developed for detector simulation\, data\nreconstruction\, and data an alysis is mainly written in C++. Yet\, scripting is an\nessential function ality of the complete software system that we are providing to\nthe physic ists\, and therefore it is essential to have a performing\, easy to code\n to\, and flexible interface from C++ to Python.\n\nPython is being used fo r application configuration\, rapid prototyping\, and\ninteractive physics analysis. The Python interface has been built on top of the\nextended C++ reflection capabilities provided by such tools as CINT and\nReflex. This reflection information\, in terms of dynamic loadable libraries\, can\nbe used for the creation of Python bindings to C++ classes\, functions\,\nvar iables\, etc.\, in a fully automated manner\, since this information is al ready\nprovided for by many end-user libraries for other purposes\, such a s object\npersistency. A consistent and automatic mapping of any C++ const ruct into an\nequi- purpose Python construct is achieved easily and elegan tly. We finalize\nwith a few use case examples demonstrating the capabilit ies of this interface.\n\nhttp://indico.cern.ch/contributionDisplay.py?con tribId=111&sessionId=50&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=111&sessionId=5 0&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Testing web applications with HyperTest DTSTART;VALUE=DATE-TIME:20060703T073500Z DTEND;VALUE=DATE-TIME:20060703T080500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-110@cern.ch DESCRIPTION:Speakers: Mr. WESDORP\, Guido (Merlinux)\nAs web applications grow increasingly complex\, and the logic of those\napplications is locate d on the client more often\, the need for good\nJavaScript testing tools i s growing. There are some products available\, but\nthe quality is usually not satisfactory: most tools are inflexible\, messy\,\nhard to integrate\ , badly written or incomplete. HyperTest tries to solve\nthose issues.\n\n HyperTest is a set of JavaScript libraries that allows testing all aspects of\na web application: there's a unit test library to test JavaScript API s\, a\nfunctional testing library for user interfaces and a library for te sting REST\nAPIs by sending HTTP requests and examining the response. All the tests are\nwritten in plain JavaScript and run inside browsers\, allow ing testers to\nuse the full power of JavaScript and test the problem area s\, like browser\ndifferences and JS implementation quirks.\n\nIn addition to the JS libraries there is Python code available that allows\nautomatin g browser control and makes the results from browsers available to\nthe ou tside. This makes that HyperTest can easily be integrated into Python\ntes t suites\; full py.test integration should be available in the near future .\nUsing HyperTest one doesn't need to visit web pages as part of the test cycle\nanymore: results appear together with 'normal' Python test results .\n\nI will be discussing common web application testing problems and prov ide\nexamples of how to deal with them using HyperTest.\n\nhttp://indico.c ern.ch/contributionDisplay.py?contribId=110&sessionId=53&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=110&sessionId=5 3&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Using Python in the Development of a Grid User Interface for Distr ibuted Data DTSTART;VALUE=DATE-TIME:20060703T131000Z DTEND;VALUE=DATE-TIME:20060703T134000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-113@cern.ch DESCRIPTION:Speakers: SOROKO\, Alexander (UNIVERSITY OF OXFORD)\nDetails a re presented of GANGA\, the Grid user interface being developed to enable \nlarge-scale distributed data analysis within High Energy Physics.\nGANGA helps users to configure\, execute\, monitor and manage their large scale \ncomputing tasks. We show how the basic functionality implemented in a s mall GANGA \ncore can be enhanced by tailored plugins provided by specific user communities. We \nshow how Python metaclasses and descriptors are us ed to build user-friendly \ninterfaces to the plugged modules in a dynamic way. The interface allows \nsimultaneous use of an interactive prompt bas ed on IPython\, full scripting \ncapabilities as well as a dynamically cre ated GUI based on pyQt. We describe the \noptimisations developed for the serialization of GANGA objects and finally\, we \npresent GANGA approaches to the configuration and help systems.\n\nhttp://indico.cern.ch/contribut ionDisplay.py?contribId=113&sessionId=50&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=113&sessionId=5 0&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Common mistakes you can make using pytz and datetime DTSTART;VALUE=DATE-TIME:20060703T151000Z DTEND;VALUE=DATE-TIME:20060703T154000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-112@cern.ch DESCRIPTION:Speakers: MIKALAJŪNAS\, Ignas (Programmers of Vilnius)\nWith pytz and datetime being included in the python2.4 distribution most people \ndon't expect to have any trouble with using them. While they seem easy o n the\nsurface both of these libraries have a few gotchas that are very ea sy to\nencounter unless you really know them both. Working on a calendarin g heavy web\napplications (SchoolTool/SchoolBell) I have encountered a lot of datetime\nrelated bugs myself. So I will try to demonstrate common mis takes made by\ndevelopers and explain the right way of performing operatio ns that are otherwise\ndifficult to get right.\n\nhttp://indico.cern.ch/co ntributionDisplay.py?contribId=112&sessionId=41&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=112&sessionId=4 1&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Introducing python into industrial environment applications DTSTART;VALUE=DATE-TIME:20060704T101000Z DTEND;VALUE=DATE-TIME:20060704T104000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-82@cern.ch DESCRIPTION:Speakers: PLIGER\, Fabio (SIA s.r.l.)\nTwo years have passed s ince the company I work for (SIA) decided to use Python\nto develop applic ations.\n\nMost of those applications are for pharmaceutical companies wit h high industrial\nand production needs. So\, I would like to talk about w hy we have chosen python\,\nabout the main problems using Python with indu strial SCADA frameworks and also\nabout some results and tips.\n\nTo wrap it up\, I would like to comment on what we think the Python evolution\nwit hin our company will be.\n\nhttp://indico.cern.ch/contributionDisplay.py?c ontribId=82&sessionId=49&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=82&sessionId=49 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Design by Contract in Python: Present and Future DTSTART;VALUE=DATE-TIME:20060703T123500Z DTEND;VALUE=DATE-TIME:20060703T130500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-83@cern.ch DESCRIPTION:Speakers: Mr. BINGHAM\, Aaron (Cenix BioScience GmbH)\nDesign by Contract (DbC)\, as proposed by Bertrand Meyer\, is an approach to soft ware\ndevelopment whereby the expectations (preconditions) and guarantees (postconditions\nand class invariants) of methods are formally specified. These formally-specified\ncontracts can then be checked automatically at runtime.\n\nFirst\, Design by Contract as proposed by Meyer is defined\, i ts strengths and\nlimitations are described\, and the rationale behind the various aspects of the\ndefinition are explained.\n\nSecond\, several imp lementations of DbC for Python\, each taking a different approach\,\nare i ntroduced. The implementations are compared to one another and to Meyer's \nproposal\, with particular attention to their suitability for production use. (At\nleast one implementation will be demonstrated live.)\n\nThird\, attributes desired of a future production-quality DbC system for Python a re\noutlined\, and possible evoltionary paths based on existing implementa tions are proposed.\n\nhttp://indico.cern.ch/contributionDisplay.py?contri bId=83&sessionId=41&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=83&sessionId=41 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Introduction to Code_Aster DTSTART;VALUE=DATE-TIME:20060703T090000Z DTEND;VALUE=DATE-TIME:20060703T093000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-80@cern.ch DESCRIPTION:Speakers: Mr. AUBRY\, ludovic (logilab)\nCode_Aster is a simul ation tool for mechanics developed over the past twenty years\nat Electric ité de France Research and Development. In the year 2000\, its home-brewe d\nscripting language was replaced with Python. This talk will present the features of\nCode_Aster and the benefits gained by the use of Python.\n\n http://indico.cern.ch/contributionDisplay.py?contribId=80&sessionId=50&con fId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=80&sessionId=50 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:An Introduction to PyPy DTSTART;VALUE=DATE-TIME:20060704T090000Z DTEND;VALUE=DATE-TIME:20060704T093000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-81@cern.ch DESCRIPTION:Speakers: Mr. HUDSON\, Michael (Heinrich Heine Universität D üsseldorf)\nPyPy is an implementation of Python written in Python itself. It aims are\nperformance and flexibility.\n\nThis talk will introduce th e project and attempt to explain why it is\ninteresting and useful.\n\nThe intended audience is people who have heard of PyPy\, have a vague idea th at\nit is interesting but are not really sure why\, though if you've never heard of\nPyPy I'll be delighted to explain things to you too :)\n\nhttp: //indico.cern.ch/contributionDisplay.py?contribId=81&sessionId=41&confId=4 4 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=81&sessionId=41 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Lightning Talks DTSTART;VALUE=DATE-TIME:20060704T140000Z DTEND;VALUE=DATE-TIME:20060704T160000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-119@cern.ch DESCRIPTION:Speakers: \nhttp://indico.cern.ch/contributionDisplay.py?contr ibId=119&sessionId=12&confId=44 LOCATION:CERN\, Geneva Main Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=119&sessionId=1 2&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Python binding for Geant4 toolkit using Reflex/PyROOT DTSTART;VALUE=DATE-TIME:20060704T101000Z DTEND;VALUE=DATE-TIME:20060704T104000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-118@cern.ch DESCRIPTION:Speakers: Dr. POKORSKI\, Witold (CERN)\nGeant4 is one of the p rincipal toolkits used for the simulation of the passage\nof particles thr ough matter. It is implemented in C++ and it exposes to the\nusers a set o f methods (of different classes) needed to construct a functional\napplica tion. In other words\, users need to interact with Geant4 objects via a\nC ++ API and therefore users' Geant4 based applications are normally written in\nC++.\n \nIn this paper we discuss how to use the Reflex/PyROOT tools to create a Python\nbinding for the Geant4 classes. Such a binding gives t he users the possibility\nof implementing their applications in Python as well as to interact and\nconfigure them from the Python prompt. Moreover\ , using the already existing\nPython binding for the ROOT data analysis fr amework\, the Python binding for\nGeant4 allows to run interactively and s imultaneously the two applications from\nthe Python prompt. This proves to be very interesting\, especially in the case of\ndevelopment and debuggin g of simulation applications. The advantanges of using\nthe Reflex/PyROOT tools for creating a Python binding for C++ classes will be\npresented in this paper.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=118 &sessionId=50&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=118&sessionId=5 0&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Users’ participation in the design process of Open Source Softwa re communities: the case of Python DTSTART;VALUE=DATE-TIME:20060705T093500Z DTEND;VALUE=DATE-TIME:20060705T100500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-84@cern.ch DESCRIPTION:Speakers: Ms. BARCELLINI\, Flore (INRIA-Eiffel Team)\nIn this talk\, we aim at analyzing the ways members of open-source software\ncommu nities\, especially users\, participate in the software design process. Th e\ngeneral objective of this research in cognitive ergonomics is to unders tand\nactivities occurring during the design process in order to better su pport\ncollaborative work\, greater interaction between various stakeholde rs\, and\nconstruction of design projects memory. In our current work\, we focus on the Python\ncommunity. In a first study\, we analyze online disc ussions between participants\nengaged in the Python Enhancement Proposal o r PEP design process. We propose an\nalternative approach to threading to represent online discussions: it is based on the\nquoting practices as a r elevant link between messages. We also show the influence of\nparticipants status in design-oriented online discussions and highlight the\nevaluativ e nature of design activities\, i.e. pair reviewing mechanisms. A second\n study\, still in progress\, aims at understanding the “Python galaxy”\ , the links\nbetween the different communities in this galaxy\, and the la nguage evolution process\nfrom the idea of language evolution in one parti cular application domain\, through its\nacceptance by one or several commu nities\, to the PEP and its related modules\nimplementations. The analysis of a “pushed-by-users” PEP extended design process\nshows how users m ay participate in the language evolution process\, in particular\nthrough mechanisms of cross-participation between communities. This talk will give us\nthe opportunity to get feedback from the Python community on our rese arch and could\nengage interested Python members into a reflective approac h about their collaborative\npractices.\n\nhttp://indico.cern.ch/contribut ionDisplay.py?contribId=84&sessionId=53&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=84&sessionId=53 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:The Snake In The MeqTree: Using Python For Simulation And Calibrat ion Of Radioastronomical Observations DTSTART;VALUE=DATE-TIME:20060704T093500Z DTEND;VALUE=DATE-TIME:20060704T100500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-85@cern.ch DESCRIPTION:Speakers: Dr. SMIRNOV\, Oleg (NWO/ASTRON)\nCalibration of obse rvational data from the next generation of radio telescopes\npresents a nu mber of unique challenges\, not only in terms of pure computational\nvolum e\, but also in terms of managing complexity. In general\, the calibration \nprocess involves constructing a combined model of the instrument and the \nobserved sky\, and fitting that model to the observations. Due to the gr eat\nvariety of sky sources and instruments\, specific models can be very elaborate\,\nbut also very different from each other.\n\nThe MeqTree packa ge attempts to address this problem by providing a very\nflexible model co nstruction & fitting toolkit which\, in principle\, should be\napplicable to all existing and future instruments. Using MeqTrees\, inscrutably \ncom plicated and detailed models ("trees") may be constructed. Python plays tw o\ncritical roles in taming that complexity:\n\n * TDL (Tree Definition La nguage)\, which is the language used to build up our models\,\nis underpin ned by Python. TDL allows for very rapid development of trees for\nsimula tion and calibration.\n\n * The MeqBrowser\, written completely in Python/ PyQt\, is a graphical browser for\nrunning\, examining and debugging the t rees.\n\nThe talk will provide a brief overview of radio interferometry\, describe the\ncalibration and simulation problems we face\, and show how P ython has enabled\nsome crucial breakthroughs in the process.\n\nhttp://in dico.cern.ch/contributionDisplay.py?contribId=85&sessionId=50&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=85&sessionId=50 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Templating Systems Compared and Contrasted DTSTART;VALUE=DATE-TIME:20060705T070000Z DTEND;VALUE=DATE-TIME:20060705T080500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-3@cern.ch DESCRIPTION:Speakers: Mr. WITHERS\, Chris (Simplistix Ltd)\nThis talk is g oing to compare and contrast the various approaches available for\ntemplat ing in python web frameworks. A brief introduction to some of the main\nfl avours will be given along with a discussion of their relative strengths a nd\nweaknesses. With luck\, the audience will leave with a clearer idea of the options\navailable to them!\n\nhttp://indico.cern.ch/contributionDisp lay.py?contribId=3&sessionId=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=3&sessionId=9&c onfId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Internationalization in Python with PyICU - Chandler\, a case stud y DTSTART;VALUE=DATE-TIME:20060703T143500Z DTEND;VALUE=DATE-TIME:20060703T150500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-7@cern.ch DESCRIPTION:Speakers: Mr. BOSSUT\, Philippe (OSAF)\nAs a cross platform de sktop client\, Chandler needed a rich and\nrobust internationalization (i1 8n) strategy. Alas\, though Python\ndoes have some good localization (l10 n) support\, it does not\nprovide a robust i18n strategy covering things l ike: localizable\nsearching\, sorting\, currency and date formating and bo undary\nrecognition. The Chandler project decided to bite the bullet and\ nbring the ICU library into the Python fold providing a PyICU\nAPI. Though using PyICU\, Chandler also uses the gettext model and\n.po format people in the Open Source community use and love for\ntranslation.\n\nThe talk w ill cover the various aspects of the internationalization \nand localizati on challenges with code samples from Chandler and\ndemonstration.\n\nhttp: //indico.cern.ch/contributionDisplay.py?contribId=7&sessionId=41&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=7&sessionId=41& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:The Enthought Tool Suite for Scientific Applications DTSTART;VALUE=DATE-TIME:20060703T073500Z DTEND;VALUE=DATE-TIME:20060703T080500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-108@cern.ch DESCRIPTION:Speakers: Dr. JONES\, eric (Enthought\, Inc.)\nThe Enthought t ool suite (ETS) is a collection of packages for developing\nscientific app lications. It includes a variety of tools ranging from Envisage\,\na fram ework for building scriptable and extensible applications\, to Mayavi\, a\ ngeneral 3D visualization package. This talk provides an overview of the\ ncollection's capabilities and demonstrates their use in a variety of\napp lications. Here is a quick description of the several packages we will\nc over:\n\n Traits\n ------\n Traits forms the foundation of almost ev ery other package in ETS. It allows\n developers to specify type inform ation for Python class members. This\n information is used for intializ ing and validating these members as well as\n building user interfaces f or an object via Traits UI. Additionally\, traits\n supports an observe r pattern where "listener" methods are called whenever a\n member trait changes.\n\n Kiva\n ----\n Kiva is a platform independent vector bas ed drawing library for rendering 2D\n graphics. It is path and affine t ransform based\, and supports alpha\n transparency. Kiva is used extens ively by both the enable and the chaco\n libraries.\n\n Enable\n --- ---\n\n Chaco\n -----\n Chaco is Enthought's package for building in teractive 2D plots. It\n architected to support customizable interactio n with scientific data as well\n as efficient rendering of large data se ts.\n\n Tvtk\n ----\n Tvtk is a "traitsified" layer on the VTK visua liztion library. In addition\n to the facitlities provided by traits\, tvtk provides a more convenient\n interface as well as more efficient sh aring of data between VTK and Python\n Numeric/NumPy data structures.\n\ n Mayavi\n ------\n Mayavi is a general purpose 3D visualizaiton plu gin for Envisage applications\n developed by Prabhu Ramachandran. This tool is actually 3nd generation of\n the original Tk based Mayavi applic ation. Mayavi is built on top of Tvtk.\n\n Envisage\n --------\n En visage is a plugin based architecture for developing scriptable and\n ex tensible applications. There are a number of plugins that come with ETS\n including a text editor\, python shell\, mayavi\, and others that can b e\n combined together along with domain specific plugins to develop full features\n applications.\n\nMore information on ETS is available at htt p://code.enthought.com/ets.\n\nhttp://indico.cern.ch/contributionDisplay.p y?contribId=108&sessionId=50&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=108&sessionId=5 0&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Factory monitoring with Pylons\, XML-RPC and SVG DTSTART;VALUE=DATE-TIME:20060703T101000Z DTEND;VALUE=DATE-TIME:20060703T104000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-109@cern.ch DESCRIPTION:Speakers: Dr. COLLINS\, Rob (Europython 2006 Conference)\nI wr ite Python applications for a company specialising in industrial factory\n monitoring and scheduling. Most recently we have developed a web applicati on for\nremote monitoring\, sending text message alarms when machine hoppe rs run low. We're\nusing the Pylons web framework\, Myghty templating\, XM L-RPC and SimPy simulation. The\ndynamic graphical display of the factory is written in SVG\, for Firefox (v1.5) web\nbrowser.\n\nWe will look at in teresting issues such as \n * the choice of framework and templating syste m\, \n * the importance of decoupling threads using a log file and XML-RPC \,\n * historical correction of data\,\n * and why we needed simulation.\n \nhttp://indico.cern.ch/contributionDisplay.py?contribId=109&sessionId=50& confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=109&sessionId=5 0&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Managing a distributed company DTSTART;VALUE=DATE-TIME:20060705T123500Z DTEND;VALUE=DATE-TIME:20060705T130500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-102@cern.ch DESCRIPTION:Speakers: WAGNER\, Lene (merlinux GmbH)\nThis talk will discus s the experiences with implementing \nagile and distributed work methods i n a small company\nthat is involved in various international projects. \n\ nThe vision of working collaboratively\, distributed and \nwith shared res ponsibilities somehow contradicts contractual\ncommitments and customer re lations. Lene Wagner\, manager of\nthe distributed open source company mer linux\, describes experiences\nand methods how to combine this within the commercial context\nof a small enterprise. \n\nThe talk discusses shared d ecision models and peer-review\nstrategies and how to manage outer and inn er commitments. \nIt deals with how to implement formal structures serving \nboth agile processes and legal requirements. The talk will also \ndescr ibe problems\, methods and findings of handling a reliable \ndistributed c ommunication via virtual channels.\n\nhttp://indico.cern.ch/contributionDi splay.py?contribId=102&sessionId=53&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=102&sessionId=5 3&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Zope: The June releases DTSTART;VALUE=DATE-TIME:20060705T090000Z DTEND;VALUE=DATE-TIME:20060705T093000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-103@cern.ch DESCRIPTION:Speakers: Mr. VON WEITERSHAUSEN\, Philipp (none)\nIt's the sec ond time that the Zope project has made releases according to the 6\nmonth release schedule. Zope 2.10 and Zope 3.3 come with numerous new features\ ,\nimprovements and refactorings. This talk will give an overview of the c hanges in\nthe "June releases" and point out some planned features for the upcoming release\ncycle.\n\nhttp://indico.cern.ch/contributionDisplay.py? contribId=103&sessionId=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=103&sessionId=9 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:xturtle - an extended turtle module for Python as a vehicle for te aching programming concepts DTSTART;VALUE=DATE-TIME:20060705T101000Z DTEND;VALUE=DATE-TIME:20060705T104000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-100@cern.ch DESCRIPTION:Speakers: Mr. LINGL\, Gregor (BRG 16)\nA new extended Tkinter based turtle module will be presented:\n(1) Motives and pedagogical goals. (2) The design of the extended module.\n(3) The underlying archtecture es pecially in respect of possible extensions and\nportings. (4) A set of sam ple scripts covering a wide range from elementary to rather\nsophisticated . (5) turtle graphics as a backbone for an introductory progamming\ncourse /book.\nFinally (6) a discussion will be initiated about the presented mod ule as a starting\npoint for a replacement for the existing turtle module of the Python standard\ndistribution.\n\nhttp://indico.cern.ch/contributio nDisplay.py?contribId=100&sessionId=52&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=100&sessionId=5 2&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Useful and New Modules DTSTART;VALUE=DATE-TIME:20060704T123500Z DTEND;VALUE=DATE-TIME:20060704T130500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-101@cern.ch DESCRIPTION:Speakers: DALKE\, Andrew Dalke (Dalke Scientific Software\, LL C)\nPython comes with batteries\, and more are added with every release. It's hard\nto keep track of all of them\, and I won't even try. My talk w ill cover some of\nthe standard library modules I think more people should know about. I'll cover\nthe new ctypes and ElementTree modules and older modules including subprocess\,\ncsv\, and optparse. Depending on the tim e I'll also show examples using the\nbisect\, heapq\, and textwrap modules .\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=101&sessionId= 41&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=101&sessionId=4 1&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Speed up your Python code DTSTART;VALUE=DATE-TIME:20060705T131000Z DTEND;VALUE=DATE-TIME:20060705T134000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-106@cern.ch DESCRIPTION:Speakers: Dr. SCHWARZER\, Stefan (SSchwarzer.com)\nDoes it see m your Python code (or even Python code in general) is too slow? If yes\,\ ncome to this talk.\n\nIt explains:\n\n- which rules should guide you when optimizing Python code\n- when you should optimize at all\n- how to find the bottlenecks in your code\n- what big-O notation is and what it's good for\n- which changes may help to speed up your Python code - using hardwar e\, algorithms\n or Python-specific idioms.\n\nThis talk is for developer s of Python code. The less experience you have\, the more\nyou will profit . If you are familiar with software development but new to Python\,\nespec ially the Python-specific tips will interest you.\n\nhttp://indico.cern.ch /contributionDisplay.py?contribId=106&sessionId=24&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=106&sessionId=2 4&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:What can PyPy do for you? DTSTART;VALUE=DATE-TIME:20060704T101000Z DTEND;VALUE=DATE-TIME:20060704T104000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-107@cern.ch DESCRIPTION:Speakers: Mr. BOLZ\, Carl Friedrich (student)\, Mr. RIGO\, Arm in (researcher)\, Mr. VAN RIET PAAP\, Eric (programmer)\nThis talk describ es novel features of the PyPy project (a next\ngeneration Python interpret er) which are made possible by\nits flexible architecture. The talk focuse s mostly on example\nusages and less about their implementation. Specific ally we \nwill discuss and showcase the following:\n\n - lazy evaluation w ith the thunk object space\n - lightweight threadlets similar to those pro vided by stackless python\n - Oz-like dataflow variables with the logic ob ject space\n - Writing compatible extension modules for PyPy and CPython w ith the PyPy\n extension compiler\n - The Javascript backend and its use s\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=107&sessionId= 41&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=107&sessionId=4 1&confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Developing Applications with the Web Server Gateway Interface DTSTART;VALUE=DATE-TIME:20060703T081000Z DTEND;VALUE=DATE-TIME:20060703T084000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-104@cern.ch DESCRIPTION:Speakers: Mr. GARDNER\, James (3aims.com)\nThe Web Server Gate way Interface is a standard interface between web servers and\nPython web applications or frameworks\, to promote web application portability\nacros s a variety of web servers. Although the specification has been around\nsi nce 2003 there is still a broad lack of understanding in the Python web\nc ommunity about the WSGI and why it is so useful. This hands-on talk will g ive\npeople new to PEP 333 all the skills they need to start writing their own WSGI\napplications along with a knowledge of current best practice an d a brief\noverview of the WSGI components that are already available in p rojects like\nPaste (www.pythonpaste.org).\n\nhttp://indico.cern.ch/contri butionDisplay.py?contribId=104&sessionId=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=104&sessionId=9 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Pylons: A Modern Python Web Framework DTSTART;VALUE=DATE-TIME:20060703T123500Z DTEND;VALUE=DATE-TIME:20060703T130500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-105@cern.ch DESCRIPTION:Speakers: Mr. GARDNER\, James (3aims.com)\nPylons is a lightwe ight web framework emphasising flexibility and rapid development.\nPylons combines the very best ideas from the worlds of Ruby\, Python and Perl\,\n providing a structured but extremely flexible Python web framework. It's a lso one of\nthe first projects to fully leverage the Web Server Gateway In terface standard which\nfacilitates extensive re-use and flexibility — b ut only if you need it. Out of the\nbox\, Pylons uses best practice princi ples to make web development fast\, flexible and\neasy. (www.pylonshq.com) \n\nThis talk will take the audience on a whistle-stop tour of Pylons\, fr om installing\nthe software to deploying a finished application.\n\nhttp:/ /indico.cern.ch/contributionDisplay.py?contribId=105&sessionId=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=105&sessionId=9 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Integrating Twisted With Existing Applications DTSTART;VALUE=DATE-TIME:20060703T073500Z DTEND;VALUE=DATE-TIME:20060703T080500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-38@cern.ch DESCRIPTION:Speakers: Mr. ZADKA\, Moshe (B-hive Networks)\nTwisted is an e vent-based framework\, with many high-level constructs for handling\nnetwo rking\, threads and more. Unfortunately\, existing applications are often written\nso as to own a whole thread of execution. This talk will survey v arious techniques\,\nusing an arranged hypothetical case study\, for integ rating Twisted with already-existing\napplications.\n\nhttp://indico.cern. ch/contributionDisplay.py?contribId=38&sessionId=41&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=38&sessionId=41 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Introducing PyQt4 for GUI Application Development DTSTART;VALUE=DATE-TIME:20060703T070000Z DTEND;VALUE=DATE-TIME:20060703T073000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-33@cern.ch DESCRIPTION:Speakers: Dr. BODDIE\, David (Trolltech AS)\nPyQt4 is a set of bindings for Qt 4\, a cross-platform C++ framework used to make \ngraphic al user interface (GUI) applications. With the release of PyQt4\, Python \ ndevelopers are now able to develop powerful cross-platform applications a nd deploy \nthem under the GNU General Public License (GPL) or the Qt Comm ercial License on all \nplatforms that support Qt and Python. \n \nWe will first briefly discuss PyQt (for Qt 3) and PyKDE (bindings for the K Deskt op \nEnvironment)\, and take a look at what has changed in PyQt4. The main part of the \npresentation will cover the new possibilities that PyQt4 of fers developers\, \nincluding access to Qt's rich text handling features\, sophisticated data handling \ncontrols\, internationalization support\, a nd integration with the Qt Designer GUI \ndesign tool.\n\nhttp://indico.ce rn.ch/contributionDisplay.py?contribId=33&sessionId=41&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=33&sessionId=41 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:The Chandler Repository\, a Database for Python Objects DTSTART;VALUE=DATE-TIME:20060704T073500Z DTEND;VALUE=DATE-TIME:20060704T080500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-32@cern.ch DESCRIPTION:Speakers: VAJDA\, Andi (OSAF)\nOSAF's flagship project\, Chand ler (http://chandler.osafoundation.org)\, is a\npersonal information manag er (PIM). As such\, it needs to persist much of a\nuser's personal data.\n \nThree years ago\, OSAF embarked on developing an embedded desktop databa se\nfor persisting the kinds of Python objects used in a PIM. Along with i ts\ndata model\, the Chandler Repository is the foundation layer in the Ch andler\nsoftware stack. \n\nIn this talk\, we would like to present some o f the design decisions we made\nearly on and discuss how they have served us over time. In particular\, we'd\nlike to address the topics of:\n\n - the language neutral data model\n - managing references between objects w ith natural indexes\n - handling concurrency without locks by merging cha nges\n - the pythonic schema API\n - queries via collections\n - cachin g via collection indexes and notifications\n\nhttp://indico.cern.ch/contri butionDisplay.py?contribId=32&sessionId=41&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=32&sessionId=41 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:The Future of Python DTSTART;VALUE=DATE-TIME:20060704T163000Z DTEND;VALUE=DATE-TIME:20060704T173000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-31@cern.ch DESCRIPTION:Speakers: Mr. VAN ROSSUM\, Guido (Google\, inc)\nThe next majo r version of Python\, nicknamed Python 3000 (or more prosaically\nPython 3 .0)\, has been anticipated for a long time. For years I have been\ncollec ting and exploring ideas that were too radical for Python 2.x\, and it's\n time to stop dreaming and start coding. In this keynote I will present the \ncommunity process that will be used to complete the specification for Py thon\n3000\, as well as some of the major changes to the language and the remaining\nchallenges.\n\nhttp://indico.cern.ch/contributionDisplay.py?con tribId=31&sessionId=13&confId=44 LOCATION:CERN\, Geneva Main Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=31&sessionId=13 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Children First! DTSTART;VALUE=DATE-TIME:20060703T160000Z DTEND;VALUE=DATE-TIME:20060703T170000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-30@cern.ch DESCRIPTION:Speakers: Dr. KAY\, Alan ()\nWhy and how the worldwide program ming community (and especially the Python\ncommunity) should get intereste d in children's education\, especially in the 3rd\nworld\, and help by mak ing children's learning environments.\n\nI will show such an environment t hat I'd like to see done in Python (because I\nthink it will spread better and be a maintained better around the world in\nPython).\n\nhttp://indico .cern.ch/contributionDisplay.py?contribId=30&sessionId=8&confId=44 LOCATION:CERN\, Geneva Main Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=30&sessionId=8& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Developing MailManager DTSTART;VALUE=DATE-TIME:20060704T073500Z DTEND;VALUE=DATE-TIME:20060704T080500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-37@cern.ch DESCRIPTION:Speakers: Mr. KEVIN\, Campbell (Logicalware)\nMailManager is a n email response management product written in Python. It is\nbuilt on top of Zope and runs against an SQL database. The source code is\nfreely avai lable under the GPL. MailManager is sold to customers either as\na web bas ed application\, an appliance server\, or via support contracts.\nAddition ally\, customers often pay for modifications of the software\, which\nare normally merged into the main development release.\n\nSome of the main cha llenges for development include the additional overheads \nof maintaining datasets for multiple revisions of the product for open source\nusers\, an d ensuring compatability with a large range of target platforms. An \ninte rnational customer base requires i18n support throughout the product. \nAd ditionally\, continual feature requests need to be developed and managed \ nagainst the public release cycle.\n\nThe development process makes heavy use of a test based methodology. BuildBot\nis used to run the test suite a utomatically on all supported platforms. Some \nof this code is also reuse d in order to provide extensive runtime monitoring\nof the product\, and e nsure it is functioning correctly. \n\nLogical ware (the company behind MailManager) was one of the first companies in th e\nUK to receive VC funding for developing an open source product.\n\nhttp ://indico.cern.ch/contributionDisplay.py?contribId=37&sessionId=49&confId= 44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=37&sessionId=49 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:PyJIT: dynamic code generation from runtime data DTSTART;VALUE=DATE-TIME:20060704T081000Z DTEND;VALUE=DATE-TIME:20060704T084000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-36@cern.ch DESCRIPTION:Speakers: Mr. BURTON\, Simon (National ICT Australia)\nPyJIT i s a framework for providing just-in-time compilation from\nwithin Python p rograms. The idea is to generate machine code at\nruntime\, and inline ou r data as we go. This can provide\nsignificant speed-ups versus compiled code\, by reducing memory\nbandwidth use and simplifying the executable co de. At the core\nwe use the Low Level Virtual Machine (LLVM) which has fa cilities\nfor creating machine dependant code on the fly. PyJIT handles\n conversion to LLVM Static Single Assignment form\, and has a\ncompiler tha t accepts a subset of the Python syntax\, including\nbasic control flow. We demonstrate applications in: vectorized\noperations and numerical linea r algebra\, tree structures for\nmachine learning\, and optimization techn iques using interval\narithmetic.\n\nhttp://indico.cern.ch/contributionDis play.py?contribId=36&sessionId=20&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=36&sessionId=20 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Python as a domain specific language DTSTART;VALUE=DATE-TIME:20060704T070000Z DTEND;VALUE=DATE-TIME:20060704T073000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-35@cern.ch DESCRIPTION:Speakers: Mr. HAMMARQUIST\, Anders (AB Strakt)\nBy using metac lasses and other powerful features of Python it is possible to use\nPython as a domain specific language. We will show how we replaced a domain spec ific\nlanguage in CAPS with Python\, and discuss our reasons for doing so. \n\nUsing metaclasses and other meta-features\, it is possible to greatly alter the\nbehaviour of Python. We have exploited these to give us what we needed for our domain\nspecific language\, which is used to describe data base object and to code fuctionality\nfor them\, while still retaining a c lear syntax. The result is something\nnot-quote-Python but still clear if you know what we are trying to do.\n\nhttp://indico.cern.ch/contributionDi splay.py?contribId=35&sessionId=41&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=35&sessionId=41 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:An Introduction to TurboGears DTSTART;VALUE=DATE-TIME:20060703T120000Z DTEND;VALUE=DATE-TIME:20060703T123000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-34@cern.ch DESCRIPTION:Speakers: Mr. DANGOOR\, Kevin (Blazing Things)\nSince its rele ase in September\, TurboGears has quickly grown a large and active\ncommun ity of developers. With TurboGears 1.0 currently in testing\, there is qui te a\nbit to show off that hasn't been presented before. In the "20 Minute Wiki"\, I show\nthe end-to-end creation of a simple application. In this presentation\, I will present\na feature tour (with code snippets) to high light some of the high-level facilities\nTurboGears offers.\n\nhttp://indi co.cern.ch/contributionDisplay.py?contribId=34&sessionId=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=34&sessionId=9& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:LiSoG - Linux Solution Group. Connect real users\, technology\, ap plications and businesses. DTSTART;VALUE=DATE-TIME:20060704T090000Z DTEND;VALUE=DATE-TIME:20060704T093000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-60@cern.ch DESCRIPTION:Speakers: Mr. MACHE\, Niels (struktur AG)\nThe Linux Solution Group (www.lisog.org) is a cooperation platform for companies\nand authori ties with a strong interest in doing business or running applications\nbas ed on Linux and Open Source. Members of the LiSoG range from global\nenter prises like IBM\, Novell and Red Hat to small businesses\, authorities and \nusers. The session will explain the goals and targets of the LiSoG solut ion\ngroup.\n\nThe speaker Niels Mache is a board member of the Linux Solu tion Group.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=60&s essionId=49&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=60&sessionId=49 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Using decorators DTSTART;VALUE=DATE-TIME:20060704T120000Z DTEND;VALUE=DATE-TIME:20060704T123000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-61@cern.ch DESCRIPTION:Speakers: Dr. SIMIONATO\, Micheles (StatPro Italy)\nI will tal k about:\n\n- what decorators are (with examples)\;\n- how to write custom decorators\;\n- when to use them and when not to use them\;\n- expecially cool decorators\;\n- 5 minutes of discussion about the decorator module I wrote.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=61&sessi onId=41&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=61&sessionId=41 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Source code management for a distributed team. DTSTART;VALUE=DATE-TIME:20060703T131000Z DTEND;VALUE=DATE-TIME:20060703T134000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-62@cern.ch DESCRIPTION:Speakers: Mr. ALEXANDER\, Steve (Canonical Limited)\, Mr. COLL INS\, Robert (Canonical Limited)\nOne way to manage the source code flow f or medium size projects with distributed teams.\nCanonical manages the sou rce code for its Launchpad project using bzr. Launchpad has\n15 developers spread over 5 continents who primarily work from home. We demonstrate\nho w a feature goes from being just an idea through development\, code review and\nfinally being committed to the official source code tree after it pa sses our\nregression test suite.\n\nhttp://indico.cern.ch/contributionDisp lay.py?contribId=62&sessionId=53&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=62&sessionId=53 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:CPSSkins: theme editor for Zope3 DTSTART;VALUE=DATE-TIME:20060704T123500Z DTEND;VALUE=DATE-TIME:20060704T130500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-63@cern.ch DESCRIPTION:Speakers: Mr. ORLIAGUET\, Jean-Marc (Chalmers)\nCPSSkins is an application that allows site designers to compose pages by selecting\nand arranging UI elements on a canvas without having to use a programming lan guage.\n\nThis talk goes through the new exciting features found in the up coming zope3 version\nof the application such as:\n\n- the new AJAX-based user interface\n- the WYSIWYG style editor\n- a simple API for creating cu stom portlets and widgets\n- the use of "perspectives" to control the visi bility of elements on a page\n- the ability to create sites through-the-we b and on the file-system\n- the XML import/export facility\n- the highly m odular rendering engine\n- compatibility with Zope2/Five\n- ...\n\nThe tal k is targeted towards both developers and site designers.\n\nMore informat ion about CPSSkins can be found at http://www.z3lab.org\n\nhttp://indico.c ern.ch/contributionDisplay.py?contribId=63&sessionId=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=63&sessionId=9& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Envisage - An Extensible Application Framework DTSTART;VALUE=DATE-TIME:20060703T081000Z DTEND;VALUE=DATE-TIME:20060703T084000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-64@cern.ch DESCRIPTION:Speakers: Mr. CHILVERS\, Martin (Enthought Inc)\nThe Java worl d has two dominant frameworks for extensible application\ndevelopment: Net Beans and Eclipse. Although many people think of these two\nprojects as I DEs\, they are both built upon open architectures that are designed\nto su pport generic GUI application development. Treading lightly in the\nfoots teps of these two excellent projects\, Envisage attempts to bring similar\ ncapabilities to the Python community.\n\nThe heart of Envisage is its plu g-in architecture\; in fact\, the Envisage core\nis little more than a sys tem for discovering\, loading\, starting and stopping\nplug-ins. Develope rs construct applications by choosing from the set of\nsupplied plug-ins ( possibly the empty set) and then adding their own to provide\ndomain-speci fic functionality. Although an Envisage application need not have\na GUI\ , Envisage comes with an ever-expanding set of plug-ins that simplify many \nof the more common and tedious aspects of GUI development (e.g.\, window \nmanagement\, menubars/toolbars\, user preferences). It is worth noting t hat these\n'standard' plug-ins are written in exactly the same way as thos e written by an\napplication developer. Each plug-in uses the Envisage ex tension mechanism not\nonly to contribute to what came before it\, but als o to define how future\nplug-ins can contribute to it. This mechanism is simple but consistent\, and\nensures that even extensions to an applicatio n are extensible.\n\nThis presentation will introduce the Envisage plug-in architecture\, and\ndemonstrate how applications both with and without GU Is can be built with it.\n\nhttp://indico.cern.ch/contributionDisplay.py?c ontribId=64&sessionId=50&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=64&sessionId=50 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Linktally: Ranking popular pages in a CMS DTSTART;VALUE=DATE-TIME:20060705T101000Z DTEND;VALUE=DATE-TIME:20060705T104000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-67@cern.ch DESCRIPTION:Speakers: Mr. PIETERS\, Martijn (Pareto)\nLinktally works arou nd typical CMS roadblocks like high-read\, low-write databases\,\nclusteri ng and extensive caching to provide a approximation to page popularity.\n\ nhttp://indico.cern.ch/contributionDisplay.py?contribId=67&sessionId=9&con fId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=67&sessionId=9& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Programming Avalon with IronPython DTSTART;VALUE=DATE-TIME:20060703T120000Z DTEND;VALUE=DATE-TIME:20060703T123000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-68@cern.ch DESCRIPTION:Speakers: Mr. QUINLAN\, Brian (Scionics)\nThis talk will use a simple (but useful) example application to demonstrate how\nWindows Prese ntation Foundation (WPF) applications can be build using Python. \n\nThe t alk will begin by explaining key Microsoft .NET concepts and how they can be\naccessed though IronPython. Authoring simple eXtensible Application Ma rkup Language\n(XAML) interfaces will also be demonstrated\, both using Mi crosoft's GUI tools and by\nwritting XAML code directly. Finally\, the key points in building and packaging a\ncomplete WPF application will be illu strated.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=68&sess ionId=41&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=68&sessionId=41 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Managing the Launchpad team at Canonical DTSTART;VALUE=DATE-TIME:20060705T120000Z DTEND;VALUE=DATE-TIME:20060705T123000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-69@cern.ch DESCRIPTION:Speakers: ALEXANDER\, Steve (Canonical)\nSteve Alexander talks about managing the Launchpad team: 16 Python programmers from\naround the world working on a complex database application.\n\nTopics include: Effec tive IRC meetings\, Conference VOIP calls\, Code review\,\nDistributed sou rce code management\, Automated testing\, Sprints and meetings.\n\nhttp:// indico.cern.ch/contributionDisplay.py?contribId=69&sessionId=53&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=69&sessionId=53 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:OpenAlea - A platform for plant modelling\, analysis and simulatio n DTSTART;VALUE=DATE-TIME:20060703T093500Z DTEND;VALUE=DATE-TIME:20060703T100500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-98@cern.ch DESCRIPTION:Speakers: Mr. PRADAL\, Christophe (CIRAD)\nThe aim of the plan t architecture research community is to understand the\nbiological process es involved in the function and growth of plants with explicit\nrepresenta tion of their topology and geometry. To understand these systems\,\nwhich may be quite complex\, researchers in botany\, ecophysiology\, forestry\, \nhorticulture\, applied mathematics and computer science share experiment al data\,\nplant models and software tools. Research in this domain conce rns several\ndifferent scales\, such as plant cells\, plant organs\, entir e plants and plant\npopulations.\n\nTo support this research\, we are deve loping OpenAlea\, an open source software\nplatform implemented in Python. OpenAlea is used for the integration and\ncomparison of diverse models a nd tools provided by the research community. We\nuse Python to glue toget her components implemented in various languages (e.g. C\,\nC++ and Fortran ). Standard wrapping tools\, such as Boost.Python\, Swig and f2py\,\nare used to support the integration process.\n\nDifferent components can use c ommon data structures such as sequences\, tree\ngraphs and multiscale tree graphs. To ease the communication between\ncomponents\, a unique interfa ce has been specified for each data structure. The\nZope component framew ork is used to define interfaces and adapters.\n\nThree types of component s are integrated into OpenAlea:\n\n- analysis of plant architecture (e.g. AMAPmod)\,\n- geometric representation and visualization of plants at diff erent scales\n (e.g. PlantGL)\,\n- and simulation models of ecophysiologi cal processes (e.g. RATP\, Archimede\,\n PyCaribu\, etc.).\n\nUsers can c ombine components from OpenAlea and other Python scientific libraries into \ncustomised work flows according to their specific needs. Training course s on\nPython and OpenAlea's modules are given in France and other countrie s (e.g. Thailand\,\nBrazil\, etc.) or through an e-learning platform.\n\nh ttp://indico.cern.ch/contributionDisplay.py?contribId=98&sessionId=50&conf Id=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=98&sessionId=50 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:py.execnet: ad-hoc networking DTSTART;VALUE=DATE-TIME:20060704T131000Z DTEND;VALUE=DATE-TIME:20060704T134000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-91@cern.ch DESCRIPTION:Speakers: KREKEL\, holger (merlinux GmbH)\nJan Balster present s a distributed computing approach \nand applications. There are differen t approaches to the\ndistribution problem\, each solution emphasises a spe cial part \nof the problem. py.execnet provides an ad-hoc approach toward s \ndistributing programs which can work without any server \nside install ation (except SSH and Python installed). \nIt executes client-provided cod e fragments asynchronously\, \nmaking server code maintenance superfluous and enables the\nclients to define the communication protocols. \n\nAs par t of the py lib py.execnet is developed in a test-driven\nstyle and is use d in many different projects. After a quick\nintroduction to using py.exe cnet this talk will provide\ninteresting examples like robust hotsyncing o f svn \nrepositories or collecting system information from\nmany (XEN) hos ts.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=91&sessionId =41&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=91&sessionId=41 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Version content in Plone with CMFEditions DTSTART;VALUE=DATE-TIME:20060704T081000Z DTEND;VALUE=DATE-TIME:20060704T084000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-90@cern.ch DESCRIPTION:Speakers: Mr. WEBER\, Grégoire (Europython 2006)\nWith CMFEdi tions Plone content may be versioned. Around the conference a 1.0rc or\n1. 0final will be available. It works with all standard Plone content out of the box.\nIt offers strong architectural support for future use cases. The re are already a\nhandful of sites productive with CMFEditions alpha versi ons.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=90&sessionI d=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=90&sessionId=9& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:PyPy architecture session DTSTART;VALUE=DATE-TIME:20060704T093500Z DTEND;VALUE=DATE-TIME:20060704T100500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-93@cern.ch DESCRIPTION:Speakers: KREKEL\, Holger (merlinux GmbH)\, PEDRONI\, Samuele (AB Strakt)\nIn this session we will present and interactively discuss wit h\nthe audience the basic architectural picture of PyPy - a next\ngenerati on Python compiler and interpreter. We will emphasize\nemphasize various emerging possibilities enabled by our\narchitecture and ask the audience f or questions.\n\nIn particular\, we'll describe the following architectura l pieces\nand point out extension and optimization possibilities:\n\n- Lan guage Implementation: Bytecode Interpreter and Object Space interaction\n- Translation to low level languages (e.g. C/LLVM)\n- Translation to higher level languages (e.g. .NET/Squeak)\n- JIT-compiler architecture\n- Interw eaving of Garbage Collection\, threading and stackless\n operations into the translation process\n\nhttp://indico.cern.ch/contributionDisplay.py?co ntribId=93&sessionId=41&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=93&sessionId=41 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:subversioned system configuration DTSTART;VALUE=DATE-TIME:20060705T090000Z DTEND;VALUE=DATE-TIME:20060705T093000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-92@cern.ch DESCRIPTION:Speakers: Mr. KREKEL\, holger (merlinux GmbH)\nHolger Krekel p resents "vadm"\, an open-source tool enabling\nfull non-intrusive versioni ng of unix system configuration\nfiles and directories. Multiple administ rators can collaborate\nand communicate over the setup of one machine. Un der the hood\,\nvadm uses subversion and the "py lib" and is easy to learn \nif you know how to use the "svn" command line already.\nThe talk will al so present future directions like supporting\nremote management of a clust er of machines.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId= 92&sessionId=24&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=92&sessionId=24 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:TinyERP: opensource enterprise management software DTSTART;VALUE=DATE-TIME:20060704T131000Z DTEND;VALUE=DATE-TIME:20060704T134000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-95@cern.ch DESCRIPTION:Speakers: Mr. DE MENTEN\, Gaëtan (Tiny SPRL)\nTiny ERP is a c omplete ERP (Enterprise Resource Planning) and CRM (Customer\nRelationship Management) package. Its main features include accounting (analytic\nand financial)\, production management (MRP)\, stock management\, sales and\np urchases management\, and much more. Technical features include flexible\n workflows\, an object relational mapping (on top of PostgreSQL)\, a dynami cally\nbuilt GUI\, an XML-RPC interface\, and reports designable using Ope nOffice (final\noutput is in PDF).\n\nThis talk will give a brief introduc tion about what Tiny ERP is\, what it can do\nand how it works. The presen tation will be divided in two parts. The first part\nwill present the func tionalities and end with a short live demo. The second part\nwill focus on the technical aspects. It will include a presentation of the\nframework\, how the different technologies involved (Python\, PostgreSQL\, XML-RPC\,\ nGTK\, ...) are used\, and some live demonstration of simple customization .\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=95&sessionId=4 9&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=95&sessionId=49 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Finding Needles in a Huge DataStack DTSTART;VALUE=DATE-TIME:20060703T151000Z DTEND;VALUE=DATE-TIME:20060703T154000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-94@cern.ch DESCRIPTION:Speakers: Mr. FRANCESC\, Altet (Cárabos Coop. V.)\nMany tools exist in the Python world to handle persistent data. Most\nof them are hi gh-level wrappers to access well-known relational\ndatabases (Oracle\, Pos tgres\, MySQL...)\, while others are wrappers to\nhighly-efficient\, speci fic-purpose libraries (bsddb\, NetCDF3...).\nOthers have developed their o wn specific formats to fulfill their own\nrequirements.\n\nIn the data-hun gry world of scientific computing\, one usually prefers\n(with good reason ) solutions that are not only fast but also\nwell-tested and\, perhaps mor e importantly\, have outstanding backward\nand forward format compatibilit y. Scientific applications also tend to\nfocus on the most efficient ways to find the "needles in the haystack"\nof massive amounts of data.\n\nWe w ill begin the talk with a description of HDF5 [1]\, an emerging\nstandard format to store scientific and other data. Its main features\nwill be cove red\, and the contexts where it can be applied to an\nadvantage will be di scussed. We will then introduce PyTables [2]\, a\nwell-known and widely ad opted solution implemented in Python for\nmanipulating potentially huge HD F5 datafiles easily and efficiently.\n\nWe also plan to offer a sneak prev iew of the next-generation PyTables\ntoolkit\, with its greatly improved i ndexing and search capabilities.\nThe PyTables discussion will include ben chmarks of the latest\nversions\, to give an idea of its lookup speed and performance as\ncompared to other well-established standard databases and toolkits.\nUsers will learn what they can expect from the next-generation\ nPyTables and how it can help them to find specific data (the needle)\nin huge (terabytes and petabytes) datasets very rapidly.\n\nIn conclusion\, w e will unfold our master plan for the future\ndomination of the world by P yTables and its growing family.\n\n[1] http://hdf.ncsa.uiuc.edu/HDF5/\n[2] http://www.pytables.org/\n\nhttp://indico.cern.ch/contributionDisplay.py? contribId=94&sessionId=50&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=94&sessionId=50 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:zc.buildout\, an automated application assembly tool DTSTART;VALUE=DATE-TIME:20060704T081000Z DTEND;VALUE=DATE-TIME:20060704T084000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-97@cern.ch DESCRIPTION:Speakers: Mr. FULTON\, James (Zope Corporation)\nApplications and application-development environments are often built\nfrom parts\, suc h as Python packages\, databases\, libraries\, and\nconfiguration. The as sembly process can be quite involved. It is\nbest to use tools to automat e the assembly process.\n\nSetuptools is a project that provides a packagi ng system for Python.\nIt extends Distutils with the ability to define pac kage dependencies\nand automated package installation. It provides automa ted\nplatform-appropriate script generation. It allows multiple versions\ nof packages to be installed\, such that different applications can use\nd ifferent package versions as needed.\n\nSetuptools is targeted toward inst alling packages into a Python\ninstallation. It is not well suited to ins talling packages into a\ndevelopment environment. Setuptools assembles ap plications at run\ntime\, leading to undesirable non-determinism when new packages are\ninstalled. \n\nWe have developed an application and framewor k\, zc.buildout\, that\nprovides automated application assembly leveraging setuptools. It can\nbe used to assemble any application\, but it is espe cially well suited\nto and is designed for assembling Python applications. Applications\nare defined with configuration files. Configuration files specify a\ncollection of parts\, along with their configuration data\, ma king up\nthe application. Parts are implemented by recipes. Recipes are\n defined as setuptools packages. Recipes are provided for installing\nPyth on packages and scripts leveraging setuptools' automated\ninstallation fac ilities\, providing an improved mechanism for\nleveraging setuptools in de velopment environments and other situations\nwhere installing into a Pytho n installation isn't appropriate. The\nbuildout system provides install-t ime\, rather than run-time\napplication assembly\, providing greater predi ctability.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=97&se ssionId=41&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=97&sessionId=41 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Panel: Getting Started with the Zope Foundation DTSTART;VALUE=DATE-TIME:20060704T131000Z DTEND;VALUE=DATE-TIME:20060704T134000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-96@cern.ch DESCRIPTION:Speakers: Mr. FULTON\, James (Zope Corporation)\nThe Zope Foun dation was legally formed on March 25\, 2006. The first\nFoundation board will be elected in June 2006. This panel\, consisting\nof Foundation Boar d members or their representatives\, will present\nprogress on forming the Foundation and\, more importantly\, solicit\ninput and volunteers from me mbers of the Zope community present.\n\nhttp://indico.cern.ch/contribution Display.py?contribId=96&sessionId=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=96&sessionId=9& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Planning your tests with morphological analysis DTSTART;VALUE=DATE-TIME:20060703T101000Z DTEND;VALUE=DATE-TIME:20060703T104000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-10@cern.ch DESCRIPTION:Speakers: Mr. THEUNE\, Christian (gocept gmbh & co. kg)\nMorph ological analysis is a powerful approach to generic problem solving.\n\nUs ing this method you can reliably plan for the minimal amount of test cases \nyou should cover for your application. This talk will demonstrate how to apply\nthe methodology and how to manage test plans with a test planning software based\non morphological analysis.\n\nhttp://indico.cern.ch/contri butionDisplay.py?contribId=10&sessionId=53&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=10&sessionId=53 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:MoinMoin Wiki Development DTSTART;VALUE=DATE-TIME:20060703T093500Z DTEND;VALUE=DATE-TIME:20060703T100500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-12@cern.ch DESCRIPTION:Speakers: Mr. WALDMANN\, Thomas (MoinMoin Wiki Core Team)\, Mr . SCHREMMER\, Alexander (MoinMoin Wiki Core Team)\nMoinMoin is a popular a nd powerful wiki engine in Python.\n\nThe talk will give an introduction t o the MoinMoin core source code\, extension\nconcepts and extension develo pment.\n\nShortly\, we will present the flexibility of MoinMoin and how th e user base (Python\,\nApache\, Ubuntu\, ...) looks like.\n\nWe will give an architecture overview as well as explain some code and show how you\nca n write your own.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribI d=12&sessionId=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=12&sessionId=9& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:The African Python: Programming and Training in South Africa DTSTART;VALUE=DATE-TIME:20060705T073500Z DTEND;VALUE=DATE-TIME:20060705T080500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-15@cern.ch DESCRIPTION:Speakers: Prof. JOUBERT\, Fourie (University of Pretoria)\nPyt hon has become the language of choice for bioinformatics\, especially in t eaching\nbioinformatics students to program. Bioinformaticists students co me from various\nbackgrounds including biology\, computer science\, mathem atics\, statistics and physics.\nWhile many of these disciplines encourage programming skills and structured thinking\,\nbiologists often have a har d time adapting to the world of computer programming when\nimmersed at pos t-graduate level. \n\nPython programming and training in South Africa will be discussed broadly\, followed\nby specific reference to the strategies followed by the South African National\nBioinformatics Network community i n their integrated national training programme. The\nlandscape of Python s oftware development for Bioinformatics in South Africa will also\nbe intro duced.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=15&sessio nId=52&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=15&sessionId=52 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:From agile development to agile evolution of enterprise systems DTSTART;VALUE=DATE-TIME:20060705T101000Z DTEND;VALUE=DATE-TIME:20060705T104000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-14@cern.ch DESCRIPTION:Speakers: Dr. SAMARIN\, Alexander (SAMARIN.BIZ)\nThe aim of th is talk is to share my experience in the use of a practical \narchitectura l framework for the improvement of enterprise business systems. This \nfra mework uses the dynamic language Jython and agile development practices. \ n\nThis presentation is complementary to my presentation at the Plone conf erence 2005 \nin Vienna (“The use of Plone for enterprise solutions”) – it covers the technical \nand practical aspects of agile evolution of enterprise systems.\n\nhttp://indico.cern.ch/contributionDisplay.py?contri bId=14&sessionId=53&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=14&sessionId=53 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Vision: VIsual Software IntegratiON DTSTART;VALUE=DATE-TIME:20060705T090000Z DTEND;VALUE=DATE-TIME:20060705T093000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-17@cern.ch DESCRIPTION:Speakers: Prof. SANNER\, Michel (The Scripps Research Institut e)\nUnderstanding the amazingly complex biological systems sustaining life requires \nintegrating\, analyzing and understanding huge amounts of data . Computers are the \ntools of choice for such a task. However\, profoun d knowledge of biology is needed \nfor analyzing the data and learning fro m it. It is impossible to foresee the \nmultitude of ways data can be vis ualized or computational methods can be combined \nto test hypotheses and often\, it is assumed that in order to use computers to their \nfull poten tial\, scientists have to become programmers. We have explored the visual \nprogramming paradigm as a way to empower scientists with the ability to \ninteractively program applications without having to worry about data s tructures or \nsyntactical details of a programming language (even as simp le and clean as \nPython). We have developed Vision: a software component that supports visual \nprogramming\, and written adapters exposing the fu nctionality of many Python \npackages in this environment. The concept of visual programming in not new \nhowever\, the interpretive nature of the Python language allows for powerful and \nelegant solutions to many limita tions witnessed in other similar tools. In this \npaper we will present V ision\, highlight fundamental differences with other tools\, \nand discuss benefits and challenges associated with this approach.\n\nhttp://indico.c ern.ch/contributionDisplay.py?contribId=17&sessionId=52&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=17&sessionId=52 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:The Python interpreter as a framework for integrating scientific c omputing software-components DTSTART;VALUE=DATE-TIME:20060703T070000Z DTEND;VALUE=DATE-TIME:20060703T073000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-16@cern.ch DESCRIPTION:Speakers: Prof. SANNER\, Michel (The Scripps Research Institut e)\nThe focus of the Molecular Simulation Laboratory is to model molecular \ninteractions. In particular we are working on automated docking and mo lecular \nvisualization. Building and simulating complex molecular system s requires the \ntight interoperation of a variety of software tools origi nating from various \nscientific disciplines. Over the last 10 years we h ave evolved a strategy for \naddressing this formidable software engineeri ng problem by developing and \nintegrating software components using the P ython language and its interpreter. The \nbasic idea is that the Python i nterpreter serves as the integration framework and \nprovides a powerful a nd flexible glue for rapidly compositing components (i.e. \nPython package s) into applications. We no longer think in terms of programs\, but \nrat her in terms of packages\, which can be loaded dynamically when needed\, a nd \ninstantly extend our framework (i.e. the Python interpreter) with new capability. \nWe have written more than 25 packages (>1500 classes) prov iding functionality \nranging from scientific visualization and visual pro gramming to molecular \nsimulations. Applications created from these comp onents have been distributed to \nover 15000 users around the world. In t his paper we will describe our approach and \nvarious applications\, discu ss the reasons that make this approach so successful\, \nand present lesso ns learns and pitfalls to avoid in order to maximize the \nreusability and interoperability of software components.\n\nhttp://indico.cern.ch/contrib utionDisplay.py?contribId=16&sessionId=20&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=16&sessionId=20 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Pyphant - A Python framework for modelling reusable data processin g tasks DTSTART;VALUE=DATE-TIME:20060705T070000Z DTEND;VALUE=DATE-TIME:20060705T073000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-19@cern.ch DESCRIPTION:Speakers: Mr. ZIMMERMANN\, Klaus (Freiburger Materialforschung szentrum\, Universität Freiburg)\nWe present the Open Source framework Py phant for the creation and application of\ndata flow models. The central i dea of this approach is to encapsulate each data\nprocessing step in one u nit which we call a worker. A worker receives input via\nsockets and provi des the results of its data processing via plugs. These can be\ninserted i nto other worker's sockets. The resulting directed graph is called a\nreci pe. Classes for these objects comprise the Pyphant core. To implement\nac tual processing steps Pyphant relies on third party plug-ins which extend the\nbasic worker class and can be distributed in so-called Pyphant-worker -archives\n(PWA).\n\nOn top of the core\, Pyphant offers a data exchange l ayer based on scipy\narrays and PIL images which facilitates the interoper ability of the workers. A\nthird layer comprises textual and graphical use r interfaces. The latter allows\nfor the interactive construction of recip es\, the former for the batch processing\nof data.\n\nOur contribution dis cusses the Pyphant framework and presents example recipes\nfor certain sci entific data analysis tasks taken from image processing and the\nsolution of ill-posed problems.\n\nhttp://indico.cern.ch/contributionDisplay.py?con tribId=19&sessionId=20&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=19&sessionId=20 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:An Introduction to Test Driven Code Generation DTSTART;VALUE=DATE-TIME:20060704T070000Z DTEND;VALUE=DATE-TIME:20060704T073000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-18@cern.ch DESCRIPTION:Speakers: Dr. MARVIE\, Raphael (LIFL -- University of Lille)\n Agile Software Development promotes the use of techniques such as Test\nDr iven Development (TDD) and Automation in order to improve software\nqualit y and to reduce development time. Code generation represents a\nway to ach ieve automation\, reducing repetitive and error-prone tasks.\n\nCode gener ation is well accepted\, writing a code generator is not\nnecessary that h ard\, however it is not trivial to decide when and how\nto embrace code ge neration. Moreover\, it is even harder to embrace at\nthe same time code g eneration and TDD\, wondering for example "How to\ntest drive generated co de?" or "How to build a generator following a\ntest driven approach?"\n\n This paper aims at providing hints to answer those questions. It\npresents an iterative approach named Test Driven Code Generation. The\nmain princi ple is to gain knowledge about the application during the\nfirst iteration s of its development process and then to identify how\nto implement code g eneration. As code generation should not drive you\nout of TDD\, we provid e hints to marry both approaches in order to\nempower your developments.\n \nUsing a simple 3-tier web application\, this paper is illustrated with t he\nPython standard unittest module\, CherryPy web application server and\ nCheetah templating system.\n\nhttp://indico.cern.ch/contributionDisplay.p y?contribId=18&sessionId=20&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=18&sessionId=20 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Frameworks Shootout DTSTART;VALUE=DATE-TIME:20060704T090000Z DTEND;VALUE=DATE-TIME:20060704T104000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-117@cern.ch DESCRIPTION:Speakers: \nhttp://indico.cern.ch/contributionDisplay.py?contr ibId=117&sessionId=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=117&sessionId=9 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Bub-n-bros = Bubble Bobble + 10 players + general craziness from P ython's flexibly DTSTART;VALUE=DATE-TIME:20060703T143500Z DTEND;VALUE=DATE-TIME:20060703T150500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-48@cern.ch DESCRIPTION:Speakers: Mr. RIGO\, Armin (University of Düsseldorf)\nBub-n- bros is an Internet version of the original Bubble Bobble game: everyone p lay a\ndragon that fires bubbles with which he catches monsters. This ver sion has a\nfast-paced crazy-bonuses feeling to it that is the true landma rk of not only ten\ndragons jumping all around but a really flexible progr amming language that does not\nrestrict inventiveness.\n\nhttp://indico.ce rn.ch/contributionDisplay.py?contribId=48&sessionId=4&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=48&sessionId=4& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Introduction to pywinauto DTSTART;VALUE=DATE-TIME:20060703T081000Z DTEND;VALUE=DATE-TIME:20060703T084000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-49@cern.ch DESCRIPTION:Speakers: Mr. MC MAHON\, Mark (.)\nTo be able to automate GUI testing you first need to be able to\nautomate the GUI. The idea is to op erate the GUI much as the user\nwould\, and test that the software reacts as expected. Many GUI\nautomation tools require you to record details of t he application\nfirst - or require you to directly specify the control tit le to work\nwith. These can be very brittle in the face of software change s. Most\ncommercial tools have their own language - which isn't Python!\n\ nPywinauto uses attribute/item access with fuzzy matching to\nspecify cont rols which could be less brittle then exact matches. It\nalso leaves open the possibility of having localization testing done\nmuch more easily then with standard tools.\n\nThis talk will give a quick introduction to using pywinauto and then\nshow the basics of how its internals work.\n\nhttp:// indico.cern.ch/contributionDisplay.py?contribId=49&sessionId=53&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=49&sessionId=53 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:MDP 2.0 - A data processing framework for scientific development a nd education DTSTART;VALUE=DATE-TIME:20060703T120000Z DTEND;VALUE=DATE-TIME:20060703T123000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-46@cern.ch DESCRIPTION:Speakers: ZITO\, Tiziano (Institute for Theoretical Biology\, Berlin)\nWe present release 2.0 of the Modular toolkit for Data Processing \n(MDP)\, a data processing framework written in Python and based on\nnump y (the most popular numerical extensions to Python).\n\nFrom the user's pe rspective\, MDP consists of a collection of trainable\nalgorithms or other data processing units (nodes) that can be combined\ninto data processing flows. Given a sequence of input data\, MDP takes\ncare of successively tr aining or executing all nodes in the flow. This\nstructure allows to speci fy complex algorithms as a sequence of\nsimpler data processing steps in a natural way. Training can be\nperformed using small chunks of input data\ , so that the use of\nvery large data sets becomes possible while reducing the memory\nrequirements. Memory usage can also be minimized by defining the\ninternals of the nodes to be single precision.\n\nFrom the developer' s perspective\, MDP is a framework to make the\nimplementation of algorith ms easier. The basic class 'Node' takes care\nof tedious tasks like type a nd dimension checking\, leaving the\ndeveloper free to concentrate on the implementation of the training\nand execution phases. The node then automa tically integrates with the\nrest of the library and can be used in a flow together with other\nnodes.\n\nMDP 2.0 introduces some important structur al changes. It is now\npossible to implement nodes with multiple training phases and even\nnodes with an undetermined number of phases. This allows for example\nthe implementation of algorithms that need to collect some st atistics\non the whole input before proceeding with the actual training\, or\nothers that need to iterate over a training phase until a convergence\ ncriterion is satisfied. The ability to train each phase using chunks\nof input data is maintained if the chunks are generated with\niterators. More over\, it is now possible to define nodes that require\nsupervised trainin g in a very straightforward way by passing additional\narguments (e.g.\, l abels or a target output) to the 'train' method.\n\nMoreover\, new algorit hms have been added\, expanding the base of\nreadily available basic data processing elements. Currently\nimplemented algorithms include Principal C omponent Analysis\, two\nflavors of Independent Component Analysis\, Slow Feature Analysis\,\nGaussian Classifiers\, Growing Neural Gas\, Fisher Dis criminant\nAnalysis\, and Factor Analysis.\n\nMDP has been written in the context of theoretical research in\nneuroscience\, but it has been designe d to be helpful in any context\nwhere trainable data processing algorithms are used. Its simplicity on\nthe user side together with the reusability of the implemented nodes\nmake it also a valid educational tool.\n\nAs its user base is steadily increasing\, MDP appears as a good\ncandidate for b ecoming a common repository of user-supplied\,\nfreely available\, Python implemented data processing algorithms.\n\nhttp://mdp-toolkit.sourceforge. net\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=46&sessionId =50&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=46&sessionId=50 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Kill -1: process refactoring in the PyPy project DTSTART;VALUE=DATE-TIME:20060705T090000Z DTEND;VALUE=DATE-TIME:20060705T093000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-86@cern.ch DESCRIPTION:Speakers: Mrs. DURING\, Beatric (Change Maker)\nIn this talk w e will present the experiences of running a collaborative\nOSS project wit hin a EU-funded consortium structure. We will briefly present \nthe initia l decision process for integrating the community and the commercial \naspe cts of the PyPy project. We will show how agile practices within the \ndev elopment team\, primarily sprint-driven methodology resulted in a need for \nprocess refactoring and how a new agile management approach was \nimple mented. We will spice up the analysis of the main drivers behind this \nch ange by refererring to Hershey-Blanchards Situational Leadership model.\n\ nhttp://indico.cern.ch/contributionDisplay.py?contribId=86&sessionId=53&co nfId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=86&sessionId=53 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:JSON-RPC - makes web services communication simple DTSTART;VALUE=DATE-TIME:20060705T081000Z DTEND;VALUE=DATE-TIME:20060705T084000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-45@cern.ch DESCRIPTION:Speakers: Mr. KOLLHOF\, Jan-Klaas (n/a)\nFor web/browser-based applications/AJAX-applications it is important to\nefficiently communicat e to web services to exchange data.\n\nThere are exsisting protocalls\, e. g. SOAP the not so Simple Object Access\nProtocol\, that are rich in featu res but rather complex. This complexity is not\nneeded for a lot of use ca ses. This is where JSON-RPC fits into the picture. It\nis a simple yet pow erful RPC protocol which defines how services and clients\nshould communic ate with each other.\n\nhttp://indico.cern.ch/contributionDisplay.py?contr ibId=45&sessionId=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=45&sessionId=9& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Snaking the Web DTSTART;VALUE=DATE-TIME:20060704T081000Z DTEND;VALUE=DATE-TIME:20060704T084000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-42@cern.ch DESCRIPTION:Speakers: Mr. FRANZ\, Markus (Metager2\, SuMa-eV)\nTwo researc h projects of NEC and the University of Hannover could not be realized\nbe cause of technology faults. With Python a 18 year old student from Germany solved\nthe problems and created a new-class metasearch engine for the WW W. The development\nprocess with problems like high-volumes of data\, web crawling\, performances iusses\nand other topics was easy with Python like with no other programming language.\n\nhttp://indico.cern.ch/contribution Display.py?contribId=42&sessionId=49&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=42&sessionId=49 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:SCREWS - An Architecture For Simulating Errors in Web Servers DTSTART;VALUE=DATE-TIME:20060705T120000Z DTEND;VALUE=DATE-TIME:20060705T123000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-41@cern.ch DESCRIPTION:Speakers: Mr. ZADKA\, Moshe (B-hive Networks)\nSCREWS is a fle xible architecture for simulating errors in web servers\, intended for\nte sting of error detection and recovery tools. The flexibility comes from th e ability\nto write "SCREWSlets"\, tiny Python scripts which determine whe ther to send an error\,\nand what kind.\n\nhttp://indico.cern.ch/contribut ionDisplay.py?contribId=41&sessionId=24&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=41&sessionId=24 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:zope-cookbook.org\, an open Zope book based on agile documentation principles DTSTART;VALUE=DATE-TIME:20060703T093500Z DTEND;VALUE=DATE-TIME:20060703T100500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-5@cern.ch DESCRIPTION:Speakers: Mr. ZIADÉ\, Tarek (Personal project)\nzope-cookbook .org is an open book project that contains recipes and tutorials\nfor Zope 3 developers.\n\nThis book is written in several languages (French and En glish so far) and based\non agile documentation principles.\n\nIt uses Pyt hon doctests to provide participants the ability to write their\nrecipes l ike they would write code\, by using a test-driven approach. The code\nexa mples can therefore reach a high level of quality\, since they are execute d\nfor real\, and evolves with the framework in use.\n\nAfter a brief tech nical overview on how the project runs\, and some extracts\, the\npresenta tion will explain how a book project can be driven exactly like a\nsoftwar e one\, and why it is very important in such a dynamic and moving project\ nlike Zope 3.\n\nEuroPython would be a nice place to promote the project t o the Zope and Python\ncommunity\, to get direct feedback and even maybe n ew writers!\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=5&se ssionId=53&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=5&sessionId=53& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Tramline\, big files are fun! DTSTART;VALUE=DATE-TIME:20060705T093500Z DTEND;VALUE=DATE-TIME:20060705T100500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-9@cern.ch DESCRIPTION:Speakers: Mr. VLOOTHUIS\, Jeroen (Pareto)\nWe at Pareto have c reated a streaming video Portal on top of Plone. It\nis created utilizing Plone's CMS capabilities combined with other open\nsource packages.\n\nBec ause large binary data (like videos) can hurt the performance of\nthe Zope database (ZODB) we set up Tramline. Tramline is a mod_python\nprogram whi ch filters incoming post data. When it notices a file\nupload it extracts the data from it and puts that into a file. Then it\nreplaces the post bod y with an id matching the filename.\n\nUpon a get it filters the response headers to see if the body is a\nTramline id. In case it is it will replac e the response body with the\ncontents of the file stored on disk.\n\nThis way Tramline ensures all binary file data is kept on disk instead\nof in the database. Yet it makes development and testing without it no\ndifferen t than you would normally.\n\nIn my talk I would like to explain the princ iples and usage of\nTramline. I will do this using our use case as a backd rop.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=9&sessionId =9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=9&sessionId=9&c onfId=44 END:VEVENT BEGIN:VEVENT SUMMARY:LLG Python: A Python based approach for high performance Parallel Geometric Computing DTSTART;VALUE=DATE-TIME:20060704T090000Z DTEND;VALUE=DATE-TIME:20060704T093000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-77@cern.ch DESCRIPTION:Speakers: Mr. FARRET\, Jérémie (Parallel Geometry Inc)\nLLG Python defines a Python based programming paradigm for a new generation of \ngeometric simulation\, able to unify volumic data representation and pro cessing for\nreal time applications. It unifies in particular geometric an d graphic pipelines\,\nreplacing parametric and polygonal surfaces with de scriptive polynomials for\ngeneralized algebraic surfaces.\n\nThis approac h virtually enables scientific simulation interoperability for domains as\ nvarious as robotics\, GIS and territorial simulation\, aeronautics or nav al simulation.\nLLG Python’s high performance\, Parallel Geometric Compu ting environment enables\nuniversal 3D programming to bring an answer curr ent simulation challenges and\nlimitations.\n\nhttp://indico.cern.ch/contr ibutionDisplay.py?contribId=77&sessionId=50&confId=44 LOCATION:CERN\, Geneva 40-SS-D01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=77&sessionId=50 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Python Academy - Teaching Python in Germany DTSTART;VALUE=DATE-TIME:20060705T070000Z DTEND;VALUE=DATE-TIME:20060705T073000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-76@cern.ch DESCRIPTION:Speakers: Dr. MÜLLER\, Mike (Python Academy)\nPython Academy is a teaching firm that specializes in Python and Python related\ntopics. It offers courses for beginners\, programmers in other languages and\nscie ntists. It also provides Python-Trainers the opportunity to teach at its t raining\ncenter in Leipzig\, Germany.\nTeaching languages are German and E nglish.\nBesides offering courses it hosts the Leipzig Python User Group a t its monthly\nmeetings. It is the leading organizer of a Python-Workshop in September of this year\nin Leipzig. Other activities include speeches a t different occasion about Python and\ncontributions to a translation of a n English open source book into German.\nPython Academy participated in in itiative "Informatikjahr"\n(http://www.informatikjahr.de/) by the German M inistry for Education and Research.\nwith the slogan "Specialists as Progr ammers".\n\nExperiences in combining teaching in the business sector and c ommunity activities\nwill be presented. Python Academy is seeking collabor ation with Python trainers that\nare interested in teaching their special Python topic in Germany.\n\nhttp://indico.cern.ch/contributionDisplay.py?c ontribId=76&sessionId=52&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=76&sessionId=52 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Distributed Source Code Management tools DTSTART;VALUE=DATE-TIME:20060703T123500Z DTEND;VALUE=DATE-TIME:20060703T130500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-75@cern.ch DESCRIPTION:Speakers: Mr. BELMAR-LETELIER\, Luis (Itaapy)\, Mr. CAUWELIER\ , Hervé (itaapy)\nA new breed of Source Code Management tools has explode d in the Free Software world.\nThese are the Distributed SCMs\, an indispe nsable tool for the agile developer.\n\nThis talk will explain how a Distr ibuted SCM is different from a Centralized one\, \nand why this makes a sp ecial difference in an agile environment.\n\nWe will expose our working ex perience at Itaapy with these tools: \n- how they became the central part of our production process.\n- what was the motivation to move from CVS to GNU Arch\, \n and then from GNU Arch to Git and Cogito.\n\nWe will clos e with a tour through the most prominent solutions available: Bazaar-NG\,\ nDarcs\, GIT and Mercurial. And we will explain why we chose GIT.\n\nhttp: //indico.cern.ch/contributionDisplay.py?contribId=75&sessionId=53&confId=4 4 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=75&sessionId=53 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:i18n made easy\, illustration with CherryPy DTSTART;VALUE=DATE-TIME:20060704T070000Z DTEND;VALUE=DATE-TIME:20060704T073000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-74@cern.ch DESCRIPTION:Speakers: Mr. DERAM\, Nicolas (itaapy)\, Mr. CAUWELIER\, Herv é (itaapy)\nAfter a quick introduction to i18n (internationalization)\, w e will show how it\nis fast and efficient to turn an application into a mu ltilingual application\nusing the itools library.\n\nThe powerful framewor k CherryPy will be used to highlight in a fully functional\nexample\, in p articular the four following aspects:\n\n * automatic message extraction i n Python code\;\n * automatic message extraction in XML templates\;\n * sp eed improvement by using one template per language\;\n * language negotiat ion API.\n\n\nThose aspects allow the internationalizion of a Python appli cation\, even outside\nthe Web context.\n\nhttp://indico.cern.ch/contribut ionDisplay.py?contribId=74&sessionId=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=74&sessionId=9& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Using CSV as an indexed persistent layer DTSTART;VALUE=DATE-TIME:20060703T101000Z DTEND;VALUE=DATE-TIME:20060703T104000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-72@cern.ch DESCRIPTION:Speakers: Mr. CAUWELIER\, Hervé (Itaapy)\, Mr. DERAM\, Nicola s (Itaapy)\nThis talk will introduce how itools.csv provides a high-level API to handle CSV\nfiles. From the loading of a simple CSV file to the ser ialisation of a complex\nobject\, we will demonstrate automatic type marsh alling\, rows handling\, and the\nsearch engine.\n\nWe will address underl ying concepts\, such as datatypes encoding and decoding\,\nindexing\, and querying by using a simple syntax. Extending the API will also be\nillustr ated.\n\nChange your point of view on CSV!\n\nhttp://indico.cern.ch/contri butionDisplay.py?contribId=72&sessionId=41&confId=44 LOCATION:CERN\, Geneva 40-S2-A01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=72&sessionId=41 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:ZEA Partner network explained DTSTART;VALUE=DATE-TIME:20060704T093500Z DTEND;VALUE=DATE-TIME:20060704T100500Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-71@cern.ch DESCRIPTION:Speakers: Mr. HEYMANS\, Xavier (Zea Partners)\nThe partnership of Zea (www.zeapartners.org) is focused on\ngrowing\nopen source and open source business by pooling resources for\ncollective action as promotion and projects.\n\nWith 20 partner companies in 11 countries\, ZEA provides a\nbroad reach\nof expertise in content management. The ZEA network\ncurre ntly totals\na combined staff of over 150 employees and a turnover in\nexc ess of €\n9 million.\n\nThe talk will investigate the challenges facing network of\nSme’s\, the\nstrategy and actions of Zea Partners.\n\nThe sp eaker Xavier Heymans is CEO of Zea Partners.\n\nhttp://indico.cern.ch/cont ributionDisplay.py?contribId=71&sessionId=49&confId=44 LOCATION:CERN\, Geneva 40-SS-C01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=71&sessionId=49 &confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Generic Functions in Turbogears DTSTART;VALUE=DATE-TIME:20060705T120000Z DTEND;VALUE=DATE-TIME:20060705T123000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-79@cern.ch DESCRIPTION:Speakers: Mr. BELAK\, Simon (TurboGears)\nGeneric functions ar e a powerful form of abstraction promoting the DRY principle and in\nthe c ase of frameworks lend themselves to declarative programming and allow use rs\nto seamlessly extend functionality with minimal boilerplate.\n\nIn thi s talk common uses cases for generic functions in TurboGears will be prese nted\nbased on concrete examples followed by a discussion on problems we e ncountered using\ngeneric functions\, as implemented in RuleDispatch packa ge from PEAK\, both on\nframework and user level\, and how these can be mi tigated.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=79&sess ionId=9&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=79&sessionId=9& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:LLG Python: Geometric Computing in Python for next generation game s and entertainment DTSTART;VALUE=DATE-TIME:20060703T151000Z DTEND;VALUE=DATE-TIME:20060703T154000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-78@cern.ch DESCRIPTION:Speakers: Mr. FARRET\, Jérémie (Parallel Geometry Inc)\nNext generation games and entertainment raise new questions in terms of archit ecture\,\ndesign and development. Parallel processing hardware architectur es enable disruptive\napproaches in terms of real time simulation and visu alization. Storage capabilities\ngrow ten folds\, along with content creat ion and hyperlarge scenes crucial problems.\nMassively multiplayer online gaming brings brand new perspectives on networking\napplications\, and con cerns about participative content creation and the corresponding\nbandwidt h issues. Finally\, 3D makes its way to embedded\, mobile devices\, spawni ng\nwith a number of specific difficulties.\n\nLLG Python proposes an orig inal\, Python based environment unifying volumic data\nrepresentation and processing for real time applications. This unification through 3D\nprogra mming and scripting enables defining solutions to many next generation gam ing\nand entertainment upcoming challenges.\n\nhttp://indico.cern.ch/contr ibutionDisplay.py?contribId=78&sessionId=4&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=78&sessionId=4& confId=44 END:VEVENT BEGIN:VEVENT SUMMARY:Pre-Mapping a GSM Network Environment for a Pervasive Game using P ython for Series 60 Phones DTSTART;VALUE=DATE-TIME:20060703T140000Z DTEND;VALUE=DATE-TIME:20060703T143000Z DTSTAMP;VALUE=DATE-TIME:20130521T230655Z UID:indico-contribution-44-47@cern.ch DESCRIPTION:Speakers: Mr. OPPERMANN\, Leif (University of Nottingham)\nPer vasive Games are a new type of game that takes place outside in the wild a nd\nmakes sense of the user's context\, often based on her position. Mobil e phones are\nthe perfect ubiquitous device for this type of game but usua lly come without a\nGPS device which could be used for positioning. Operat or based positioning can\ndeliver a GPS-compatible coordinate in latitude and longitude (WGS84)\, but this\ninvolves a fee for every position look-u p and is only available on a few\nnetworks. Client based positioning based on the GSM network's cell IDs is an\nalternative solution\, where the pho ne's current serving cell is utilized to\ninfer the user's location either in an abstract graph space or in WGS84\ncoordinates by using look-up tabl es of previously seen and geocoded cell IDs.\n\nThis talk covers how Pytho n for Nokia Series 60 phones has helped us to collect\nthe data for the cl ient based positioning approach and how we use it to prepare\nfor a locati on-based multiplayer game accross the 3 cities of Nottingham\, Derby\nand Leicester which will go online on Valentines Day 2007. The game is going t o\nrun on a number of mobile phones. We are using Python for rapid prototy ping of\nrequired tools and potentially also the gaming interface.\n\nPart s of the software could potentially be made available to the community.\nP arts of the software have been developed within a 6th Framework EU funded\ nintegrated project on pervasive gaming (IPerG) in which the author and hi s\naffiliation participate.\n\nLinks:\nhttp://www.pervasive-gaming.org/\nh ttp://makinglovecity.blogspot.com/\nhttp://www.lovecity.tv/\n\nhttp://indi co.cern.ch/contributionDisplay.py?contribId=47&sessionId=4&confId=44 LOCATION:CERN\, Geneva 40-S2-B01 URL:http://indico.cern.ch/contributionDisplay.py?contribId=47&sessionId=4& confId=44 END:VEVENT END:VCALENDAR