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Thursday, September 11, 2008


7:30 pm: General hubbub, inventory end-of-meeting announcements, any first-minute announcements.

7:35 - 8:40 pm: Technical Program

Topic: Newbie Nugget:Micro-benchmarking with timeit

Speaker: Matt Good


Topic: Finger Painting with Planets

Speaker: Tim Thompson



 About the talk:

Finger Painting with Planets is an interactive installation using FingerWorks iGesture multitouch pads in a custom-built controller, shown here. The installation lets people place objects in space, and gravitational attraction between the objects produces graceful movements that are translated into visuals and sound. Knobs and buttons on the controller are used to adjust parameters. A musical keyboard is used to select notes that will be used in the music.

Tim also did a presentation for BayPIGgies in October 2005.

Here are the slides from that presentation.


Topic: Theater Lighting System

Speaker: Drew Perttula


The source code for the whole system is here:;a=summary


The slides from the 2005 presentation are here:;a=headblob;f=/doc/


 About the talk:

I'll talk about 3 major new improvements to my theater lighting system since the last presentation in 2005: a midi input device (with python driver); the use of RDF for most of the persistent data; and a new tool
for rendering previews of lighting scenes with opengl.


8:40 - 9 pm: Mapping/Random Access

Mapping is a rapid-fire audience announcement of topics the announcer is interested in.

Random Access follows immediately to allow follow up individually on topics of interest.

Interested in attending this meeting ?  Register here

Thursday, August 9, 2007


General hubbub, inventory end-of-meeting announcements, any first-minute announcements.

7:35 - 8:40pm Technical Program

Topic: Newbies' Night Part Deux

Speakers: Alex Martelli

Links: (video) (slides [PDF]).

About the talk

The long-awaited next incarnation of "Newbies' Night" happens again! All current memberes and attendees please bring at least one person new to and/or interested in Python. This friendly and interactive beginner talk is open to anyone and everyone in the nearby community who want a quick "intro to Python" and discussion.

Part 2 is the second half of this terrific overview of the Python language that completes the bayPIGgies Newbies Night series for the year.

About the speaker

Alex is a long-time and highly-respected member of the Python community. He will give a demo/lecture of the language and its features. We will most likely be using some of the slides from Alex's recent talk on Python for Programmers (see link above).

8:40 - 9pm

Event: Mapping/Random Access

Mapping is a rapid-fire audience announcement of topics the announcer is interested in.

Random Access follows immediately to allow follow up individually on topics of interest.

Thursday, July 12, 2007


General hubbub, inventory end-of-meeting announcements, any first-minute announcements.

7:35 - 8:40pm Technical Program

Topic: The Natural Language Toolkit (NLTK)

Speakers: Steven Bird, Ewan Klein, and Edward Loper

Links: NLTK Downloads

About the talk

Most human knowledge--and most human communication--is representedand expressed using language. Language technologies permit computers to process human language automatically; handheld computers support predictive text and handwriting recognition; web search engines give access to information locked up in unstructured text. By providing more natural human-machine interfaces and more sophisticated access to stored information, Natural Language Processing has come to play a central role in the multilingual information society. The Natural Language Toolkit is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. NLTK includes some 50k lines of Python, a 380-page book (80% complete), and 300Mb of test data, all freely downloadable from In this presentation, the developers of NLTK will introduce the field of Natural Language Processing, demonstrate the main features of NLTK, and describe ways for the Pythoncommunity to participate in the ongoing development effort.

About the speakers

Steven Bird is Associate Professor in Computer Science at the University of Melbourne in Australia, and Senior Research Associate in the Linguistic Data Consortium at the University of Pennsylvania, specializing in R&D on models and tools for large databases of annotated text. Steven edits the book series "Cambridge Studies in Natural Language Processing," and was recently elected president of the Association for Computational Linguistics.

Ewan Klein is Professor of Language Technology in the School of Informatics at the University of Edinburgh in Scotland. He has also been Research Manager for the Natural Language Research Group of Edify Corporation, Santa Clara, and was responsible for spoken dialogue processing. Ewan was the founding Coordinator of the European Network of Excellence in Human Language Technologies. He has lead numerous academic-industrial collaborative projects, most recently in biological text mining.

Edward Loper is a doctoral student at the University of Pennsylvania, conducting research on machine learning in natural languageprocessing. In addition to NLTK, Edward has helped develop othermajor packages for documenting and testing Python software, epydoc and doctest.

Thursday, June 14, 2007


General hubbub, inventory end-of-meeting announcements, any first-minute announcements.

7:35 - 8:40pm Technical Program

Topic: unittest

Speaker: Collin Winter

Links: A new unittest
pythons unittest module sucks
Motivation for rewriting unittest

About the talk

Collin reports on his recent work to redesign Python's unittest module. This is a preview of the presentation he'll be giving at EuroPython 2007 on the same topic: "Python's unittest module sucks. Come find out why and what's being done to fix it."

About the speaker

Collin is a Python core developer and works at Google with Guido van Rossum on Mondrian [1]_, Google's code review tool. Most of his Python work is focused on Python 3000, such as the 2to3 tool [2]_ for translating Python 2 into Python 3 source. (video) (code).

8:40 - 9pm

Event: Mapping/Random Access

Mapping is a rapid-fire audience announcement of topics the announcer is interested in.

Random Access follows immediately to allow follow up individually on topics of interest.

Thursday, May 10, 2007

7:30 - 8:45pm Technical Program

Topic: Newbie Night

Speaker: Alex Martelli, Drew Perttula, Wesley Chun, everyone

About the talk

The long-awaited next incarnation of "Newbies' Night" happens again! All current memberes and attendees please bring at least one person new to and/or interested in Python. This friendly and interactive beginner talk is open to anyone and everyone in the nearby community who want a quick "intro to Python" and discussion.

About the speaker

Drew and Wesley are longtime members of the group, and Alex is a long-time and highly-respected member of the Python community. They will give a demo/lecture of the language and its features. We will most likely be using some of the slides from Wesley's intro BOF talk and/or Alex's recent talk on Python for Programmers (video) (slides [PDF]).

8:45 - 9pm

  • Announcements, plus Mapping
  • Discussion and Meet-N-Greet, Random Access

Thursday, February 8, 2007

7:30 - 8:50pm Technical Program


Topic: Three Generations of User Interface

Speaker: Dennis Reinhardt

Project URL

Materials: (after presentation)

About the talk

I have implemented DialogDevil via three different user interfaces:

  1. direct to Windows API via ctypes
  2. wxPython, and
  3. separate embedded html-based process.

The pros and cons of each approach from a developer's perspective will be discussed using metrics such as memory footprint, download size, flexibility, robustness, and visual styling.


Topic: Visualizing python profile results

Speaker: Drew Perttula

About the talk

I'll present a simple development tool that reads results from the python profiler and renders them into a web page. The page uses colored bars and tinted table cells to highlight additional information about the profile results.

About the speaker

In past Baypiggies meetings, Drew has presented a video editor, an intro to pyrex, and a theater lighting control system. Currently, he spends most of his time working on films with ogres and princesses and on a web game startup.


Topic: Introduction to wxPython

Speaker: Ken Seehart


Announcements and discussion

Thursday, December 14, 2006

7:30 - 8:30pm


Speaker: Shannon -jj Behrens

About the talk

Are you fascinated by programmer productivity? Do you wish you could get more done in less time without sacrificing quality? This talk will cover a broad range of topics such as work environment, development environment, and programming language features.

About the speaker

Shannon -jj Behrens is a self-professed language lawyer who works for Mitch Kapor at Foxmarks, a Web 2.0 startup in San Francisco. His eventual goal is to implement a Python-like systems language and then develop a practice kernel in that language.

8:30 - 9:00 Meet & Greet

Thursday, November 9, 2006

7:30 PM - 8:50 PM Technical Program

Topic: Python for Prototyping in Air Traffic Control

Speaker:Russ Paielli (NASA Ames Research)

About the talk

The talk will start with a high-level overview of the US air traffic control system, then it will focus on tactical (i.e., short range) conflict alerting and describe the prototype software that we are developing to replace the legacy software that currently performs that function. Examples of actual "operational errors" will be presented, and the alerting performance of our system will be tested and compared with the legacy system. The rationale for using Python for the prototype and its testing will be briefly discussed.

8:50 PM Mapping/Random Access

Mapping Moderator: Dennis Reinhardt (WinAjax):
Mapping is a rapid-fire audience announcement open to all of topic headings (one speaker at a time).
Random Access session (everyone breaks up into self-organized small-group discussion) follows immediately after Mapping.

Thursday, October 12, 2006

7:30 PM - 8:50 PM Technical Program

Topic: Better, faster, smarter.
Python yesterday, today... and tomorrow

Speaker: Alex Martelli

Audience: Assume working knowledge of Python 2.2 or laterassume working knowledge of Python 2.2 or later

Materials:Python 2.5

About the talk

The new core features and libraries of recently released Python 2.5 are described. The talk starts with Python 2.2 and traces the evolution of releases to build context for what is new in 2.5.

8:50 PM Mapping/Random Access

Mapping Moderator: Dennis Reinhardt (WinAjax):
Mapping is a rapid-fire audience announcement open to all of topic headings (one speaker at a time).
Random Access session (everyone breaks up into self-organized small-group discussion) follows immediately after Mapping.

Thursday, September 14, 2006

7:30 PM Technical Program

Topic: Introducing Plone (Content Management System)

Speaker: Donna M. Snow

Materials: Available September 7th

Presentation: Available September 7th

About the talk

Donna has been building dynamic websites with Plone since 2001 and is an active member of the Plone community. Planned topics for this program (may be revised slightly):

  • Introduction to Plone
  • Case Studies
  • Installation and setup of a Plone site
  • Tour of Plone Interface
    • adding new content
    • wysiwyg editor
    • publishing feature
    • working with portlets
    • smart folders
    • setting up groups and user permissions
  • Installing new products
  • Skinning (theming)
  • Workflow & Security
  • Search functionality
  • Documentation (getting help)
  • Q&A session (about 15 minutes)
Companies that use Plone for content management include NASA, Oxfam, eBay, Trolltech, Nokia, Utah State University, Creative Commons and Wolford.

8:30 PM Reports

Leslie Hawthorn (Google)
OSCON 2006 activities: Google/O'reilly OS awards and Google Summer of Code update
Robert Stephenson:
Review of Raymond Hettinger's excellent "AI in python" talk at OSCON 2006, solving puzzles in python.

8:50 PM Mapping/Random Access

Mapping Moderator: Dennis Reinhardt (WinAjax):
Mapping is a rapid-fire audience announcement open to all of topic headings (one speaker at a time).
Random Access session (everyone breaks up into self-organized small-group discussion) follows immediately after Mapping.

Thursday, August 10, 2006

Location: Ironport Dungeon Basement


7:30 PM to 8:15 PM

Topic: Paper Cutter Control Software

Speaker:Drew Perttula



About the talk

I present a recent python project: control software for a modified paper cutter (the fancy-shapes kind, not the large-blade kind). I will get into the applications of python for driving the parallel port, parsing and rasterizing SVG, doing a preprocess on the curves to compensate for a hardware problem, etc. The python modules I used are Numeric, ScientificPython, twisted, louie, elementtree, and Tkinter.

8:15 PM to 8:45 PM

Topic: Twisted.Web2

Presenter: David Reid



About the talk

I'd present Twisted.Web2. In particular what it is capable of, where it is going, how it differs from Twisted.Web, what all this means for Nevow. Of course I'd try to include a thorough summary of Twisted for those unfamiliar with the project.

8:45 PM to 9:00 PM

Event: Mapping/Random Access

Moderator: Dennis Reinhardt (DAIR Computer Systems)

Level: Open to and accessible by All

About the event

Mapping is a rapid-fire audience announcement of topics the announcer is interested in. Random Access follows immediately to allow follow up individually on topics of interest.

Thursday, July 13, 2006

Location: Google


7:30 PM to 9:00 PM

Topic: Some Python Integrated Development Environments

Speakers: Marylin Davis (Emacs), Keith Dart (Vim), Tony Capellini (Pythonwin), Mark Ivey (Xcode) and Mike Cheponis (WingIDE)

About the talks

There is a plethora of Integrated Development Environments for Python. If you need to pick one, or if you are curious about them, this is the meeting for you. We will have 5 developers, each talking about their own favorite environment.

The Demo People

Topic: Emacs

Presenter: Marylin Davis



About the talk

Emacs - Historically the first piece of the GNU System (which includes Linux), Emacs has a Python mode which brings the classic, flexible, and extendible key-stroke or mouse-driven programmer's editor by Richard Stallman to the aid of the Python programmer. Marilyn will demonstrate the Python debugger under emacs, using a macro to make light work of complicated testing.

About the presenter

Marilyn Davis is the Python Instructor at UCSC-Extension. She is the lead developer at and

Topic: Vim

Presenter: Keith Dart


About the talk

Vim is a ubiquitous and powerful text editor. Although unfriendly to newbies, it's remarkably fast and useful once you take the time to befriend it. Even users of powerful IDEs often long for the speed and convenience of editing text using Vim's key bindings.

Keith will show how he uses vim to integrate other tools to create a vim-centered Python development environment.

About the presenter

Keith Dart works in QA automation and is the primary developer of the PyNMS network application framework.

Topic: Pythonwin

Presenter: Tony Cappellini


About the talk

Pythonwin is a Python IDE and GUI framework for Windows that runs on Windows 98, 2000, and XP. It comes with the Win32all Python extensions, and is actively under development. It was developed and is maintained primarily by Mark Hammond from Australia, with a fair amount of other people contributing to the project. It implements some IDLE extensions. Some of its features are a Python Shell (cmd line) with command completion, a debugger, editor with syntax highlighting, a popup Object Browser, and a trace collector which catches the output from wintraceutil. Some of the more notable features are its COM browser and makepy utility, which are a huge aid when working with applications using COM.

About the presenter

Tony Cappellini is a recently-unemployed test software engineer, having worked 18 years in the Hard Disk Drive industry. His new employment status offers almost-limitless opportunity to immerse himself into all things pythonic.

Topic: Xcode

Presenter: Mark Ivey


About the talk

Xcode is the IDE that Apple ships with OS X. Although primarily targeted towards C++, Objective C, and Java it also plays well with Python. It is excellent for writing OS X applications in Python thanks to good integration with Apple's Interface Builder and py2app (the OS X distutils packager).

About the presenter

Mark Ivey is a senior engineer at R2 Technology. Although his job doesn't involve a lot of Python, it is his preferred evenings and weekends language.

Topic: Wing IDE

Presenter: Mike Cheponis


About the talk

Wing IDE makes rapid Python development fun. Mike will demonstrate just a few of its features on real projects he has written. Mike talk about other features that might be of interests, such as built-in Zope, Plone, Subversion, and Perforce support, plus auto-completion for wxPython and PyGTK.

About the presenter

Mike Cheponis is President of California Wireless, Inc., a Silicon Valley consulting firm that specializes in Wireless Communications Systems, designing RF, Analog, Digital, and software subsystems and products. He writes code in assembly languages, Lisp, and Python.

Thursday, June 8, 2006

Location: Ironport Dungeon Basement


7:30 PM to 8:20 PM

Topic: Mercurial Distributed Source Control Management

Speaker: Bryan O’Sullivan

Level: Beginner-oriented with some Intermediate



About the talk

The Mercurial distributed SCM is written in Python, portable, distributed, easy to learn, and very, very fast. It's being used by such big, well-regarded operating system projects as Xen and OpenSolaris, and smaller, popular projects such as MoinMoin and microformats. Features and some of the techniques used to get good performance are presented.

8:20 PM to 8:45 PM

Topic: Designing Your Own Mini-language

Presenter: Ken Seehart

Level: Advanced



About the talk

A recipe for the development of special purpose languages involving extensions to the C++ grammar is proposed. This presentation briefly describes the implementation of the NICL programming language.

8:45 PM to 9:00 PM

Event: Mapping/Random Access

Moderator: Dennis Reinhardt (DAIR Computer Systems)

Level: Open to and accessible by All

About the event

Mapping is a rapid-fire audience announcement of topics the announcer is interested in. Random Access follows immediately to allow follow up individually on topics of interest.

Thursday, May 11, 2006

Location: Google


7:30 PM to 7:50 PM

Topic: CTypes Usage Examples: Direct Windows Api

Speaker: Dennis Reinhardt DAIR Computer Systems

Level: Advanced/Specialist

About the talk

CTypes is an add-on package to be integrated into Python 2.5 release. CTypes provides a light-weight mapping from Python directly to system DLLs, illustrated in this talk by the Windows API. Difficulties encountered in implementation will be mentioned.

7:50 PM to 8:40 PM

Topic: 2006 BayPIGgies Member Survey Results

Presenter: Stephen McInerney

Level: ALL

About the presentation

2006 Member Survey

  • data and analysis on: member background, geographical preferences
  • what are the meeting topics of most interest, preferred meeting formats
  • attracting speakers for specific topics. calendaring.
  • mailing-list, website and meeting logistics
  • identifying areas where volunteers are needed
  • identifying what is the top-n list of issues facing the group (Note: absolutely *not* solving those issues, just identifying a list of what they are)
  • conclusions, trends, action items

7:50 Prize Draw with Anna Ravenscroft

7:53 - 8:25 Slide Presentation

8:25 - 8:40 Interactive Q&A

(We must break at 8:40 sharp but can continue discussion afterwards.)

8:40 PM to 9:00 PM

Event: Mapping/Random Access

Moderator: Dennis Reinhardt

Level: Open to and accessible by All

About the event

This allows establishment of and follow up on mutual interest(s). Mapping is a rapid-fire audience announcement of topics the announcer is interested in. Random Access follows immediately to allow everyone to follow up individually on topics announced in which they also have an interest. This is modeled on the format of the legendary Homebrew Computer Club.

Special Meeting: Wednesday, April 26, 2006

Agenda: Django talk

Location: Google

Level: all

Speaker(s): Jacob Kaplan-Moss

About the talk

Jacob is one of the lead developers of Django, one of the up-and-coming web frameworks that seeks to challenge Ruby-on-Rails. He will be fine-tuning his talk until the last minute but plans to cover the following:

  • How Django came into being -- a bit about the Journal-World, the problems that Django was designed to solve, some bits about its evolution, and a glance at how we use Django today
  • What writing Django apps look -- I'll show off some real code and talk about each of the bits of Django's stack. This'll be the bulk of the talk
  • What's in store for the future of Django -- there's some awesome community work going on, as well as some under-the-radar stuff we're working on that I'll try to preview or at least talk about

Thursday, April 13, 2006

Agenda: Book review and newbie questions

Location: IronPort

Level: all

Speaker(s): JJ (Shannon Behrens)

About the talk

JJ will review "Professional Software Development" with discussion and newbiew questions afterward.

Thursday, February 9, 2006

Agenda: PyCon Previews

Speaker(s): (various)

About the talk(s)

We will have several folks making presentations at the upcoming PyCon 2006 conference in Dallas give a preview of their session talks:
  1. Title: vobject - An iCalendar Library

    Abstract: In recent years there has been an explosion of interest in standardized calendaring based on iCalendar (RFC2445). In 2004, several groups perceived a need for and independently implemented general Python iCalendar libraries. vobject sprung out of the Open Source Application Foundation's need for Chandler to interoperate with CalDAV servers and other calendar clients.

    vobject features parsing and serialization of iCalendar objects, including converting python standard timezone classes to and from iCalendar VTIMEZONE. It also integrates with the dateutil package to provide expansion of recurrence rules.

    Speaker Bio: Jeffrey Harris recently moved to the Bay Area after living for 7 years in rural Missouri at Dancing Rabbit Ecovillage. He misses hot weather, but not snow. When he's not working for the Open Source Applications Foundation, he plays ultimate frisbee.

  2. Title: Packaging Programs with py2exe

    Abstract: py2exe is a Python distutils extension which converts Python scripts into executable Windows programs, able to run without requiring a Python installation. This talk by the maintainer of py2exe will cover the simple use, options, more complex use, and future of py2exe.

    Speaker Bio: Jimmy Retzlaff has been using Python professionally since 1998 and is the maintainer of py2exe.

  3. Title: SAM: Transforming a commandline tool to Web 3000

    Abstract: This presentation discusses Spike Asset Manager (SAM), the reasons python was chosen as implementation language as well the benefits python has provided.

    SAM is a tool that detects open source components on a system (windows, linux, mac). By the time PyCon rolls around SAM will have transformed from a relatively simple cross platform command line application to a network aware server capable of detecting other instances. IT users will be able to control all instances from either the command line or a gui (fancy AJAX provided in a web broswer because some systems may be headless).

    This talk will discuss the evolution of SAM, the design decisions made and a few of the open source projects it uses (PDIS Xpath, ElementTree, Path, Cheetah, json-py, MochiKit, WebStack, pyzeroconf, py2exe and more). The intended audience is python users who are interested in AJAX, Web2.0 or converting a commandline app into a web enabled app.

    Speaker Bio: Matt Harrison is a senior software engineer at SpikeSource, and is happy there because he gets to work with open source software and python. He has a BS in CS from Stanford.

January 12, 2006

Agenda: "Why Python?" and "Newbies' Night"
Speaker: Marilyn Davis - Marilyn earned a Ph.D. in Radio Astronomy from UCSD and Master's degrees in Applied Physics from UCSD and Mathematics from DU. Computer programming and teaching captured her imagination and she has made significant contributions in scientific, statistical, operations research, test-development and groupware applications. She has been teaching C Programming at UCSC-Extension for 17 years, and Python for 3 years.

About the talk

Marilyn will outline the characteristics of a *good* program and show how Python takes the sting out of achieving those characteristics. We will study 3 Python program files: a beginner's program to demonstrate syntax, readability, and introspection; an administrator's script to demonstrate library access and portability; and a module containing a class definition to demonstrate how Python de-mystifies object-oriented programming.

Time permitting, we will look at the results of a few language comparison studies as well as do the traditional "Newbies' Night" activities such as field questions about Python, data types, comparisons with Perl, etc., plus give a live demo of some of Python's features, so bring all your friends and colleagues who are curious about Python and why you are so passionate about it!

Thursday, December 8, 2005

Agenda: GCipher, a GUI encryption tool
Speaker: Shannon -jj Behrens

About the talk

GCipher is a simple application that shows how to combine Glade/PyGTK, the async module, and a plugin architecture.

Thursday, November 10, 2005

Agenda: Prototyping a GPS in Python
Speaker: Hasan Diwan

About the talk

Hasan will give a demo of a GPS system that is being prototyped in Python and implemented in Java. Let's all help him find reasons to skip the Java!

Thursday, October 13, 2005

Agenda: Audio/Visual Experiments in Python
Speaker: Tim Thompson

About the talk

Radio Free Quasar is an audio-mangling VST-Hosting application that was deployed inside an antique radio for a Burning Man installation in 2004. Ergo generates real-time graphics in response to drummer-generated MIDI input. These Python-based projects will be described and demonstrated. Slides from a presentation at electro-music 2005 can be found here.

Thursday, September 15, 2005

Agenda: SQLObject & FormEncode, A Practical Introduction
Speaker: Ben Bangert

About the talk

  • Using SQLObject to integrity check legacy databases
  • FormEncodes use for validation and data coercion
  • Easy web front-ends to databases
  • Fully abstracted database access for easy portability

Thursday, August 11, 2005

Agenda: RRsR and OSCON 2005
Speaker: Hasan Diwan and OSCON attendees

About the talk

Hasan Diwan will present RRsR, a web-based RSS reader written using feedparser and python CGI. This is expected to be a short presentation; afterward, anyone who was at OSCON is invited to summarize what they saw/heard.

Hasan's blog is at

Thursday, July 14, 2005

Agenda: Descriptors, Decorators, Metaclasses: Python's "Black Magic"?
Speaker: Alex Martelli

About the talk

Python's versions since 2.2 have introduced, enhanced, and clarified some new advanced mechanisms: two of them are the underpinnings of Python's Object-Oriented Programming (OOP), Descriptors and Metaclasses; one, introduced in 2.4, is a syntax for the systematic application of an important use case for higher-order functions. This presentation takes its contents mostly from the (informally known as...) "Black Magic" chapter of the Python Cookbook (2nd Edition), also known (official chapter title!) as "Descriptors, Decorators and Metaclasses", and focuses on some of the most interesting applications and related idioms presented there, with expanded explanations of the underlying language mechanisms and additional examples.

Descriptors control and guide attribute access. Python offers several built-in descriptor types -- for example, in today's Python, functions are descriptors -- and also lets you code your own.

Decorators are a simple syntax to feed a function as the argument to another (higher-order) function, and have the latter's resulting value used in lieu of the original function -- while decorator syntax ('@deco') is new in Python 2.4, you can use the same approach with slightly clumsier syntax ('func = deco(func)') in 2.3 and even 2.2.

Metaclasses are to classes as classes are to instances. Python's built-in metaclass is the built-in 'type', and you can subclass and customize it to produce custom metaclasses to control behavior of whole family of classes.

This presentation shows how to best use each of these mechanisms, both in terms of existing, Python-supplied objects and types (descriptors, decorators and metaclasses), and of coding and using your own custom ones. What are "data" and "non-data" (aka "override" and "non-override") descriptors, and how and why might you code and use either kind? When do you need introspection to ensure proprer decoration, and how can Python's standard library help there? How should custom metaclasses cooperate to insure peaceful coexistence of several of them, and how can you solve metatype-conflicts? And, of course -- how do custom descriptors, decorators, and metaclasses cooperate with each other, and with other powerful Python mechanisms such as introspection, closures and advanced dynamic gyrations, to let you write elegant and powerfully customized code with minimal effort? This presentation explores these questions, providing the fundamental knowledge and the outlook and guidance that will help you answer the questions in the most useful ways for your own applications.

Thursday, June 9, 2005

Agenda: Lighting System Project
Speaker: Drew Perttula

About the talk

Drew says:

I have worked since 2002 with partner David McClosky on a theater lighting control system. We've used the system every summer to design and execute lighting for a dance show. The system includes a music player, a variety of programs to design and time light cues, and drivers for hardware that outputs the DMX protocol used by most theatrical lighting gear.

The python issues I will cover include:

  • realtime RPC
  • plotting audio waveforms
  • Tk user interfaces
  • playing back audio with accurate sync
  • working on software only a few weeks every year
  • some of the second-system dead ends that haven't gotten done

The hardware demo will consist of a flickering status LED only, unless someone else can bring in a DMX-controlled dimmer or light.

Thursday, May 19, 2005 NOTE: (moved to 3rd Thursday this May)

Pre-Meeting: To celebrate our first meeting there, a buffet dinner will be served by Google in the same room as the talk (see above) starting at 6:45p. The talk itself will begin at the normal 7:30p start time.

Agenda: Design Patterns/OOP
Speaker: Alex Martelli

About the talk

Alex will be repeating his OSCON/PyCon presentations about OOP and design patterns -- with improvements!

Alex is a world-renowned author. He has written two "bibles" of the Python community: Python In A Nutshell (O'Reilly ISBN 0-596-00188-6) and Python Cookbook (O'Reilly ISBN 0-596-00167-3) co-edited with David Ascher. Alex has worked as an independent consultant, but is now part of the Google team.

Thursday, April 14, 2005

Agenda: PyCon Wrap-up
Speakers: PyCon attendees (incl. Guido and others)

About the talk

Review of the happenings at PyCon 2005, March 23-25 in Washington, DC.

Thursday, March 10, 2005

Agenda: Python Objective C and GNUStep
Speakers: Donovan Preston

About the talk

Donovan Preston will lead a discussion about using Python with OS X, including integrating with PyObjC and GNUStep.

Thursday, February 10, 2005

Agenda: Developing Responsive GUI Applications Using HTML and HTTP
Speakers: Donovan Preston

About the talk

Donovan will be treating us to a preview of his PyCon presentation:

Google's Gmail was the first high-profile example of a highly responsive web application, blurring the line between the desktop and the web. The techniques employed by it to reduce perceived latency have been available for years, but involve a large amount of JavaScript that can be difficult to implement. This presentation will discuss the history of these techniques, implementation strategies, and the use of LivePage, included within the Nevow web application framework.

Thursday, January 13, 2005

Agenda: Python Tips and Techniques
Speakers: Danny Yoo

About the talk

Danny leads a discussion of Python coding techniques based on snippets contributed by several people. To add your snippet to the list before the talk, send e-mail to Danny. You may want to read the code listings before the talk.

You can also pick up the code in a tarball.

Thursday, December 9, 2004

Agenda: Open Source and Intellectual Property Law
Speakers: Terry Carroll

About the talk

Open Source is a great idea, but what are the ramifications of Open Source licensing with respect to intellectual property law, particularly when combined with commercial products? Terry Carroll discusses the following topics:

  • Intellectual Property and Open Source
  • Using Open Source in a commercial product
  • Releasing your work as Open Source

Terry Carroll is a former programmer and computer architect turned attorney. He's best known in the Internet world for the Usenet Copyright FAQ, written and periodically posted back when people still read usenet for more than the comp.* groups.

He's consulted on use of open source code, and teaches copyright law at Santa Clara University School of Law. At present, Terry is Intellectual Property Counsel for Borland Software Corporation, and programs in Python for fun on his own time.

Thursday, November 11, 2004

Agenda: C/C++ Integration
Speaker: Chad Netzer

About the talk

Python was designed for easy integration with C, but it has never been trivial. There are many different tools available, each with different strengths and weaknesses. Chad will be leading a series of mini-tutorials to expose the audience to some or all of the following: Boost, ctypes, Pyrex, Scons, SIP, SWIG, Weave

We haven't settled the agenda, so go to the BayPIGgies mailing list and vote!

As of Tues 11/9, we have speakers for the following:

  • Boost.Python: Chad Netzer
  • ctypes: Jimmy Retzlaff
  • Pyrex: Drew Perttula
  • SCons: Chad Netzer
    • Thursday, October 14, 2004

      Agenda: Beginner's Roundtable
      Speaker: Danny Yoo

      About the talk

      In lieu of an official speaker, Danny Yoo is organizing a Beginner's Roundtable for people to discuss issues they have in learning Python. Danny is one of the backbones of the tutor list, and he's extremely patient. No question is too stupid!

      Thursday, September 9, 2004

      Agenda: pyscheme
      Speaker: Danny Yoo

      About the talk

      Here's an impromptu outline of what my pyscheme presentation will involve:
      • A quick introduction to Scheme, and how it's similar to Python.
      • A sketch of how pyscheme works.
      • Demo of the program itself.
      • Discussion on a core problem when implementing Scheme in Python:
        • Python's recursion limit.
        • How to deal with it: bouncing functions on trampolines.
      • Maybe even continuations, if I haven't lost the audience by then.
      • Recap.

      Thursday, August 12, 2004

      Agenda: GUI programming and debugging
      Speaker: Y O U

      About the talk

      This month we'll have a group discussion about GUI programming and debugging (Qt, Tkinter, wxPython, etc). We'll start with a mini-presentation from Reg Charney about an application using MySQL and Qt. If you want to make a 10-15 minute presentation before general discussion starts, please post to the mailing list.

      Thursday, July 8, 2004

      Agenda: BitPim
      Speaker: Roger Binns

      About the talk

      BitPim is a program that manipulates data on cell phones. Roger will discuss the issues in writing BitPim, including some or all of:

      • Something that works (graphically) on Linux, Windows and Mac
      • Interfacing with serial ports and with USB (on all those platforms)
      • Interfacing with 3rd party stuff such as Outlook and Evolution
      • File formats for saving data
      • Internal representation of data
      • Packaging it all up for easy download
      • Doing documentation
      • Dealing with troubleshooting (eg what happens if there is an exception when user is running the program)
      • Threading model and threading issues
      • Secure remoting of data source (SSL, SSH, XML-RPC)
      • Printing

      Thursday, June 10, 2004

      Agenda: Python's Type System
      Speaker: Bruce Eckel

      About the talk

      Bruce will be repeating his keynote from PyCon DC 2004. From the PyCon website:

      Many people observe that type checking is a religious discussion best avoided. I often agree, having started more than my share of fires in this area. However, there are a few issues surrounding types and type checking that capture the essential distinctions between programming languages. This understanding makes the pitfalls worth the risk, so in this talk I will look at various issues and arguments surrounding the concept of type, and in particular examine the phenomenon of 'latent typing' (often called 'weak typing'), why the concept is powerful, and how it is expressed in different languages. In the process, I will attempt to clear up many of the issues that have arisen during attempts to describe Python's place in the spectrum of language features.


      Thursday, May 13, 2004

      Agenda: 6pm dinner
      PyCon trip report
      Speakers: Guido van Rossum, Aahz

      About the talk

      At 6pm, we'll be having a pre-meeting dinner at Jing-Jing in downtown Palo Alto. It's located at 443 Emerson, just north of University. Please send e-mail to if you're going.

      During the meeting, Guido and Aahz will talk about PyCon. Learn what you missed so you'll be enticed into going next year. (Guido will reprise at least part of his PyCon keynote.)


      Thursday, April 8, 2004

      Agenda: Two sessions

      A Practical Perspective on Python Performance
      Jimmy Retzlaff

      Toying With Python - Highlighting "Keywords" in a Body of HTML Text
      Danny Yoo

      About the talks

      Repeating the March structure, we're going to have two shorter sessions this meeting. In the first session, Jimmy will discuss a number of lessons learned regarding performance in a relatively large client-server Python application. Concepts including when, what, and how to optimize will be discussed. Technologies including extension modules, Pyrex, and Psyco will be briefly compared. The talk will conclude with some thoughts about the potential performance benefits of dynamic typing over static typing.

      In the second session, Danny will demonstrate several approaches to solving a "simple" text processing problem including several wrong turns along the way to show what not to do. Both correctness and performance will be important in this problem. The tutorial should briefly cover: brute-force searching, dictionaries, regular expressions, and if we have time, maybe even something like the Aho-Corasick automaton.


      Thursday, March 11, 2004

      Agenda: Two sessions

      The Bikle Python Learning Experience
      Dan Bikle

      Self Documenting Test Automation Framework
      Patrick Schork

      About the talks

      We're going to have two shorter sessions this meeting. The first one will be run by Dan Bikle, a newcomer to Python. He'll be talking about his experiences in learning Python as part of a CS class at De Anza college. In a reversal of the usual process, he'll be asking the questions and the audience will provide the answers. You can find his code at

      In the second session, Patrick Schork will discuss a QA framework that combines Python and XML to help large testing teams build multi-tier regression and system levels tests.


      Thursday, February 12, 2004

      Agenda: Multi-threaded Anti-Spam Shareware Application
      Speaker: Dennis Reinhardt, DAIR Computer Systems

      About the talk

      This is progress and status report on SpamAI, a commercial anti-spam shareware application, implemented in Python and first reported to BayPiggies in Feb. 2002. The technical approaches and experience with packaging, updating, and supporting a ready to run Python distribution are discussed. This app hosts multiple client and server threads having both email and web protocols. The internal thread and process tree to support this are reviewed. as well as the object and module architecture.

      Dennis Reinhardt has been designing computer hardware and software since graduating from MIT with dual degrees in 1965 and 1966. He was previously a Senior Architect at Intel and is now owner of DAIR Computer Systems. He was chair of the Hot Chips 8 conference and of the Santa Clara Valley Chapter of the IEEE Computer Society. He holds 7 US patents. He was elected to the board of the 1300+ member Association of Shareware Professionals for a 2-year term starting Jan. 1, 2004.


      Thursday, January 8, 2004

      Agenda: Python Threads

      About the talk

      Aahz will rerun the Python Threads talk he gave at Pycon DC 2003, which is a cut-down version of the slides available from his OSCON 2001 Threads Tutorial.


      Thursday, December 11, 2003

      Agenda: pyNMS features
      Speaker: Keith Dart

      About the talk

      Keith Dart will talk about pyNMS, a project he has hosted on SourceForge. pyNMS allows one to develop network management applications. There will be discussion of the project, as well as discussion about a distributed Python software repository (ala CPAN or Gentoo)


      Thursday, November 13, 2003

      Agenda: What's new in Python? Not your usual list of new features
      Speaker: Guido van Rossum

      About the talk

      Python is an OO programming language that is usable for pedestrian tasks typically called "scripting", as well as for the construction of highly advanced class libraries. The latest versions, Python 2.2 and 2.3, have added significant power to Python's competence in the latter area, primarily through the introduction of two new concepts: iterators (a generalization of for loops) and descriptors (a generalization of customizable attributes).

      In this talk I will present the principles and some examples of these additions, and show how they are useful for lowly scripting tasks as well as for advanced class library authors. I encourage audience participation and will be available for questions afterwards.

      About the speaker

      Guido van Rossum is the creator of Python, one of the major free scripting languages. He created Python in the early 1990s at CWI in Amsterdam, and is still actively involved in the development of the language.

      In 1995 he moved to the US; first to work for CNRI in Reston, VA as a researcher, then for Zope Corporation as Director of PythonLabs, and since 2003, after a move to the SF bay area, for Elemental Security.

      His home on the web is


      Pizza and snacks was provided before the meeting, at about 7:00. Thanks to Jim Oakley of Google for providing the pizza!

      Notes from the Speaker

      My slides from last night are online as PowerPoint and PDF files at (scroll all the way to the end).

      If you missed it, you can watch the Stanford video (linked to from the above URL) or come to the ACCU meeting in San Jose, Tuesday 12/9 at 7pm (


      Thursday, October 9, 2003

      Agenda: GUI programming
      Speaker: Jimmy Retzlaff

      Note: our regular meeting times have been rescheduled: we are now meeting on the second Thursday of each month.

      The topic of this month's BayPIGgies meeting is GUI programming, with an emphasis on the use of Model-View-Controller and Model-View-Presenter architectures. There will be a short presentation, followed by an open discussion.

      Jimmy Retzlaff will present a simple RPN calculator application, written in wxPython, that demonstrates MVC decoupling between the GUI and other program logic. This will lead to discussion of people's experiences using MVC or MVP with Python's GUI toolkits. Bring your questions and experiences to help contribute. Discussion on other GUI concepts or toolkits are welcome.

      Notes from the Speaker

      Here are the URLs of the MVC/MVP pages I was showing in case anyone is interested in reading further:

      If you want to explore the calculator source code further, you can download it from:

      I'm not prepared to release the magma.ui package yet, but I have included the most recent broker/broadcaster implementation in with the calculator source. The original broker/broadcaster Python Cookbook recipe is at:

      It also appears in slightly edited form in the print version of the Python Cookbook if you happen to have that.

      Finally, here is a link to SciTE, the editor I use. You can also find information about the Scintilla control there.

      Scintilla is used in a wide variety of projects:


      September 10, 2003

      Agenda: Wavelets for SciPy
      Speaker: Chad Netzer

      This talk will demonstrate an implementation of a wavelets package for SciPy, and present some applications with signal processing and image classification. There will be discussion of the benefits of doing scientific computation with Python, unit testing with statistical methods, and using SciPy with PythonCard as a learning tool. (Knowledge of wavelets is not a requirement, and the math will be kept to a minimum)

      NOTE: the original announcement for this meeting incorrectly mentioned the 11th. This is in error --- this month's meeting is on the 10th.


      August 13, 2003

      Agenda: Python 2.3
      Speaker: Brett Cannon

      What's up in Python 2.3? Find out tonite. :-)

      Call For Talks: We are actively seeking speakers for BayPIGgies! If you would like to give a talk at one of our remaining 2003 meetings (any Python related topic), send mail to Wesley, Aahz, Tony, and Danny
      to coordinate!


      July 9, 2003 (CANCELLED)


      June 11, 2003

      Agenda: BayPIGgies, OSCON/Py11, Curl, etc.

      This month's an informal meeting where we all get together to shoot the hay and talk about the future of BayPIGgies: upcoming meetings, stephen's and chad's survey of topics, website cleanup, and future direction now that Wesley will be preoccupied in the near-term :-).

      We will also ruminate about the upcoming O'Reilly Open Source Convention (OSCON) and Python 11 conference happening together in Portland the week after July 4th.

      Finally, anyone fiddle around with Curl and want to give a talk on it with relationship to Python? Anyway, we'll be giving away a free copy of "Enterprise Curl" by Paul Sheehan (Dec 2002: Addison-Wesley) for the lucky volunteer -- talk must be presented in 2003 ;-) -- and also another giveaway copy in a separate drawing for all attendees this month. Some starter links:

      1-page intros

      brief plus link to Lightweight Languages Workshop write-up:

      see cute post subjected with "Re:ANYTHING!!!" by Jason Earl on Fri Apr 06:


      May 14, 2003

      Agenda: Compedium of talks from PyCon 2003
      Speaker: Wesley Chun

      We will give a high-level overview of some of the talks which were given at the PyConf 2003 Python Community Conference which happened at the end of March in Washington, DC:

      1. Python State of the Union
        Guido van Rossum
        Presentation Slides (.PPT)
      2. Subversion from Within: Python in a Java world
        Dana Moore
        Presentation Slides (PDF)
        Talk Info
        Speaker Info
      3. Programming Languages in 100 Years (KEYNOTE)
        Paul Graham
        Article based on keynote
        Review by Ziggy
      4. POSH: Python Object SHaring
        Steffen Viken Valvaag, Aage Kvalnes and Kjetil Jacobsen
        Paper (HTML)
        Paper (PDF)
        Talk Info
        Speaker Info
        Project web page (Sourceforge)
      5. Prevayler
        Joel Shprentz
        Speaker Info
        Prevayler web page
      6. Teaching with PyGame
        Nathan Yergler & Vern Ceder
        Full Paper, Slides, etc.
        Speakers Info
      7. Web Framework Shootout
        Ian Bicking
        Full Paper (HTML)
        Speaker Info
      About the Speaker:

      Wesley Chun is a volunteer coordinator for BayPIGgies and sometimes volunteer moderator for the Python Tutor mailing list. He currently works in San Francisco writing Python software for doctors.


      April 9, 2003

      Agenda: Introduction to Machine Learning and Support Vector Machines
      Speaker: Asa Ben-Hur

      The basic concepts of machine learning will be presented, with a focus on Support Vector Machines (SVM), which have shown their effectiveness in many domains of application. Examples of applying the methodology in areas such as text categorization and bioinformatics will be discussed.

      About the Speaker:
      Asa Ben-Hur is applying machine learning methods for the analysis of biological data ranging form protein function prediction, analysis of gene expression and protein expression to methods for elucidating gene regulation.

      He is currently a postdoc at the biochemistry department at Stanford.


      March 12, 2003

      Agenda: PyChecker and Friends
      Speaker: Phil Lindsay

      PyChecker and friends: Easing the transition from ad hoc scripts to stable, maintainable Python applications

      PyChecker can be thought of as "Lint" for Python, and is a tool for finding bugs in Python source code. This talk will introduce PyChecker, show some of its functionality and discuss some of the lessons learned from its use in a commercial software development environment. The presentation will be from the perspective of a happy user & interested hacker. Some of the future goals of the project's authors will also be described. If time permits, the speaker will demonstrate a couple of small tools he has developed to also help in the creation of stable, maintainable applications.

      About the Speaker:
      Philip Lindsay is a recent graduate of the University of Canterbury, in Christchurch, New Zealand. He has been in the Bay Area for the past four months on a "Work USA" student work exchange program visa. During this time he has worked for a San Francisco based software development company using Python and wxPython.


      February 12, 2003

      Agenda: Python technology in a threaded internet application
      Speaker: Dennis Reinhardt

      The Python technology underpinning a new spam management program is described. The program uses Python threading with independent threads of control for acquiring POP3 email, delivering that email to client, and for user control via integrated http server. Threads are spawned dynamically. Most of the code is written at the socket level. The approach taken to allow an embedded single executable install and live update will be described.

      About the Speaker:
            Dennis Reinhardt has been designing computer hardware and software since graduating from MIT with dual degrees in 1965 and 1966. He was previously a Senior Architect at Intel and is now owner of DAIR Computer Systems. He was chair of the Hot Chips 8 conference and of the Santa Clara Valley Chapter of the IEEE Computer Society. He holds 6 US patents. top

      January 8, 2003


      December 11, 2002

      Agenda: Newbie Night!
      Speaker: open to everyone

      Due to popular demand, we are having another Newbie Night (e.g. April 2002). This is the chance for all Python programmers to bring their friends and colleagues who should hear about Python. It is also for those who want to or are picking up Python and have questions! We will have a good number of Python experts who will try and help you out. Perl and Java experts are welcome too, as many Python developers also have experience there and can give you an honest comparison.

      The format is this: Wesley (or Danny) will give just a short half-hour intro presentation on Python to beginners followed by a quick demo, and then we will open it up to everyone for Q&A. Mingling and networking will bring our meeting to a glorious conclusion. :-)

      NOTEs: we had a great meeting this month... as usual, the socializing afterwards caused us to leave well past our bedtime.


      November 13, 2002

      Agenda: Editing Digital Video
      Speaker:Drew Perttula

      I want to edit digital video in a unix way. That means I want an open-source suite of non-monolithic, flexible tools and transparent data formats that I can use with all my other unix tools. I won't stand for any segfaults or other data-losing behavior. And most of all, I need it by yesterday.

      Development started mid-September, and by late October I was transcribing and logging captured DV footage into my xml format. Soon after that, the timeline-style editor was running, and we were dragging thumbnails from footage index pages (in html displayed in Mozilla) right into the timeline. There's even the beginning of an effects plugin system, which I currently use to handle the mixing of audio tracks. At November's meeting, I'll be demoing the editor itself and discussing the tools I used, the components I had to build, and where I plan to go with it next.

      I have a sloppy wiki site at where I've put some screenshots, samples of the xml formats, use cases, and other notes I made during development. The wiki also gives instructions for getting all the code via anonymous CVS. The code is still very poorly packaged, so it's probably near-impossible to get the code to run anywhere else as of yet.

      Notes: Drew's talk was excellent; we had a great turnout (over 16 people) and featured HOT food for the very first time!


      October 9, 2002

      Agenda: Python at the O'Reilly Open Source Convention
      Speaker: Wesley Chun

      Wesley will just give a run down on some of the key talks at this year's O'Reilly Open Source Convention which happened late July. Some of the talks to be summarized include:

      1. Guido's Python State of the Union [with updates on 2.2 and 2.3]
      2. Guido's talk on what he feels he regrets in Python
      3. the Bioinformatics Keynotes from Ewan Birney and Jim Kent
      4. the PythonCard talk (HyperCard-motivated wxPython GUI builder, a la Glade for pyGTK) by Kevin Altis and Patrick O'Brien, and
      5. Jason Asbahr's talk on using Python for developing game logic, not to mention his ports of Python to the Sony PlayStation 2 and Nintendo Gamecube!

      Download links:

      1. Guido's essays and presentations
      2. various O'Reilly OSCON 2002 presentations

      NOTE: We had our largest atttendance of the year with nearly 20 people this time! Invite all your friends!!


      September 11, 2002

      Agenda: Using a New Model-View-Controller Architecture to Create a Pythonic XML-based Web Application Framework
      Speakers: Paul McGavin, Donovan Preston, Sam Penrose from InterSight

      We will discuss how we are applying a new Python-based MVC architecture to create an efficient, Pythonic web application framework that separates presentation templates from the Python source code with DOMTemplate. The framework componentizes behavior into reusable objects with DOMWidgets and DOMHandlers.

      After creating web applications in three separate Python frameworks -- Webware for Python, Zope and Apache/Python cgi -- InterSight decided to create its own MVC framework, based on some of the ideas from IBM and Lutris Enhydra's Barracuda project, to power their automated publishing applications. Their applications enable scalable content: the ability to produce, from a single set of managed data and images, many different marketing communication pieces: press-ready Adobe InDesign and QuarkXPress files, web pages, order sheets, sample stickers, price tags and more.

      About the Speaker:
      Donovan Preston is a software engineer at InterSight and applies his extensive skills in the design and publishing industry to create automated publishing software. Donovan has used Python to develop the WebMVC architecture that enables the rapid development of large, Pythonic Web Applications.


      August 14, 2002

      Agenda: Using SNMP with Python: the pyNMS project
      Speaker: Keith Dart

      In this talk, we will discuss the pyNMS package -- what's in it, where to find it, and how to use it.

      The pyNMS package is a collection of Python (and some C) modules for use in network management applications. It is also useful for testing and other types of applications.

      This package contains a real grab-bag of modules, the most notable are SNMP Management, MIB browsing, XML and XHTML file manipulation, and other miscellaneous modules you may find useful.

      About the Speaker:
      Keith Dart has been working as a Quality Assurance Engineer and Network Engineer at various ISPs, carriers, and equipment manufacturers for many years. He currently works at Pivia, Inc. writing QA infrastructure software in Python.

      Notes: We had a great meeting with 8 attendees. It turns out that Keith's package is more than just about network management -- it turns out that there are many other useful tools which come in the distribution, not to mention tweaks and improvements to many of the existing Python modules.


      July 10, 2002

      Agenda: Internet Programming with Python
      Speaker: Wesley Chun

      Continuing the high-level talks for the O'Reilly OSCON 2002 conference at the end of this month, Wesley will give an introductory talk on various forms of Internet programming using Python:

      • Network Programming (client/server, socket module)
      • Internet Client Programming (FTP, NNTP, POP3/IMAP, telnet)
      • CGI Programming (CGI basics, cgi module)

      The full description of the tutorial I will be presenting can be accessed here. I will also be giving the "now"-annual intro to the complete newbie BOF: What is Python? at the upcoming conference.


      June 12, 2002

      Agenda: Python for (Perl) Programmers
      Speaker: Aahz
      This is a fast-paced tutorial that will be presented at the O'Reilly OSCON 2002 conference at the end of July. Although the non-Python examples use Perl, it's aimed at experienced programmers of all sorts. Aahz will be using BayPIGgies members as guinea pigs for the middle section of the tutorial, which focuses on Python objects and namespaces. :-)

      Aahz has been kicking around the computer industry for more than two decades, doing tech support, programming, consulting, tech writing, and training. Aahz recently signed a book contract for an intermediate-level Python book, which will be published in early 2003.


      May 8, 2002

      Agenda: Eating Out with Python
      Speaker: everyone...
      Location: Coco's in Sunnyvale (Lawrence/US-101)

      Our host at Stanford and BayPIGgies volunteer Danny is out of the country this month, so we are going to take Deirdre's advice and have a Python roundtable over dinner for this month's meeting!

      We will meet at the usual 7:30pm time, but instead of Stanford, we will be at the Coco's in Sunnyvale right off of Lawrence and 101. If we finish early, there will be time for those who wish to go to the nearby Digital Guru bookstore or Fry's Electronics! Both are about 1-2 minutes away by car from Coco's.


      April 10, 2002

      Agenda: Newbies Night
      Speaker: everyone...

      Invite everyone you know who may be interested in Python but have questions, would like to learn more about it, or need some advice on an application! These meetings have been very popular in the past, with a good mix of newbies as well as old hands. They are even more fun when one or more Perl experts come around wondering what the big deal is about Python. :-) Come join us for this interactive session!

      Next Meeting (5/8): Eating Out with Python (our meeting room will not be available, so we will meet and chat over dinner at a local restaurant!)


      March 13, 2002

      Agenda: BioPython
      Speaker:Jeffrey Chang, School of Medicine, Stanford University

      Andrew Dalke and Jeff Chang founded the BioPython project in August 1999 to promote the development of shared software infrastructure in bioinformatics. This field applies computational algorithms to the storage, distribution, and analysis of biological data. Since many researchers share similar common tasks, the goal was to reduce the overhead from duplicated work. Since then, Biopython has become quite successful in the field and is in use in over 100 sites around the world.

      During this talk, Jeff will cover the architecture, technologies, and capabilities of Biopython. He will also give a sneak preview of the new functionality in the upcoming version.

      Side Note: Steve Holden, author of Python Web Programming will be in the Sacramento area the last week of February, so if you want to meet him, chat, and/or get your book signed, drop him a line at sholden at to coordinate.


      February 13, 2002

      Agenda: Python 10 Conference Summary
      Speaker: Todd Valentic, SRI International

      Many of us will not be able to make it to the Python10 Conference (Feb 4-7 2002)... Todd will give us the lowdown on what happened.

      Notes: 14 people came to the great talk by Todd, who not only gave a summary of the conference but summarized his paper on using NNTP in a unique sort of way as well.


      January 16, 2002

      New Location: Stanford University, 7:30pm
      Agenda: The new BayPIGgies and Python news
      Speaker: Wesley Chun, BayPIGgies

      1. Resurrecting BayPIGgies
      2. The new Python 2.2 release (Dec 21 2001)
      3. The new Jython 2.1 release (Dec 31 2001)
      4. Python10 Conference next month (Feb 4-7 2002)
      5. Python course from UCSC Extension (Jan 28-Mar 25 2002)

      Notes: we had 6 people show up at our inaugural meeting at Stanford; pretty good, esp. given the last minute notices. If you want a PDF of the slides, contact me at wesc at

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