Joe Kauzlarich writes "Finally, someone has done us all the great service of publishing a book about the second most well-known compiler compiler, Terence Parr's Antlr, and it was written, moreover, by Parr himself and published as part of the somewhat-usually-reliable Pragmatic Bookshelf series. Take note, while it requires a JVM to run, Antlr is not just for Java developers; it generates compilers in Python, Ruby, C, C++, C# and Objective-C. Also note that this book is more than just an elaborated man-page; it is also an excellent introduction to the concepts of compiler and parser design." Keep reading for the rest of Joe's review.

Pickens writes "Dr. Dobbs has an interesting interview with Paul Jansen, the managing director of TIOBE Software, about the Programming Community Index, which measures the popularity of programming languages by monitoring their web presence. Since the TIOBE index has been published now for more than 6 years, it gives an interesting picture about trends in the usage of programming languages. Jansen says not much has affected the top ten programming languages in the last five years, with only Python entering the top 10 (replacing COBOL), but C and C++ are definitely losing ground. 'Languages without automated garbage collection are getting out of fashion,' says Jansen. 'The chance of running into all kinds of memory problems is gradually outweighing the performance penalty you have to pay for garbage collection.'"

Joe Kauzlarich writes "In 2006, the on-line movie rental store Netflix proposed a $1 million prize to whomever could write a movie recommendation algorithm that offered a ten percent improvement over their own. As of this writing, the intriguingly-named Gravity and Dinosaurs team holds first place by a slim margin of .07 percent over BellKor, their algorithm an 8.82 percent improvement on the Netflix benchmark. So, the question remains, how do they write these so-called recommendation algorithms? A new O'Reilly book gives us a thorough introduction to the basics of this and similar lucrative sciences." Keep reading for the rest of Joe's review.

An anonymous reader writes "Google is giving a handful of web programmers the opportunity to create and run their own Web applications on their servers. Today's launch of a preview release of Google App Engine signals a new era of collaboration with third-party software developers. 'The goal is to make it easy to get started with a new Web app, and then make it easy to scale when that app reaches the point where it's receiving significant traffic and has millions of users," said Google product manager, Paul McDonald in a blog post."

Michael J. Ross writes "When software developers need to manipulate text programmatically — such as finding all substrings within some text that match a particular pattern — the most concise and flexible solution is to use "regular expressions," which are strings of characters and symbols that can look anything but regular. Nonetheless, they can be invaluable for locating text that matches a pattern (the "expression"), and optionally replacing the matched text with new text. Regular expressions have proven so popular that they have been incorporated into most if not all major programming languages and editors, and even at least one Web server. But each one implements regular expressions in its own way — which is reason enough for programmers to appreciate the latest edition of Regular Expression Pocket Reference, by Tony Stubblebine." Read below for the rest of Michael's review.

Rockhopper writes "Ars Technica has a combo review/hack guide for the Tux Droid, a programmable penguin. 'Tux is completely programmable at practically every level, and all of the source code of the firmware and software used by the droid is available from Kysoh's version control repository. There are several ways to program the droid's behavior, ranging from modifying the firmware to coding a gadget in Python.' There's a sample Python script that will cause Tux to speak IRC messages out loud when the user's name is mentioned."

sspringer writes to let us know about Sun's continuing push to support scripting languages other than Java on its Java virtual machine. Sun just hired two key Python developers: Ted Leung, a long-time Python developer at the Open Source Applications Foundation, and Frank Wierzbicki, who is lead implementer of the Jython project. They will both work on Jython, which enables Python to run on the JVM. Last month Sun's CEO said the company wants to "take the J off the JVM and just make it a VM."

Stony Stevenson writes "Organizations using Python will be affected in a major way by changes in store for the language over the course of the next twelve months, Linux.conf.au attendees were told this morning. The Python development community is working towards a new, backwards-incompatible version of the language, version 3.0, which is slated for release in early 2009. Anthony Baxter, the release manager for Python and a senior software engineer at Google Australia, said "We are going to break pretty much all the code. Pretty much every program will need changes." Baxter also added another tidbit for attendees, saying that Python accounts for around 15 percent of Google's code base."

Tolkien writes "Source code for SimCity has been released under the GPLv3. For legal reasons the open source version was renamed Micropolis, which was apparently the original working title. The OLPC will also be getting a SimCity branded version that has been QA'ed by Electronic Arts. Some very cool changes have been made by Don Hopkins, who updated and ported what is now Micropolis. (Here is an earlier Slashdot discussion kicked off by a submission Don made.) Among other things, it has been revamped from the original C to using C++ with Python. Here is the page linking all the various source code versions. Happy hacking!"

Coverity is claiming they have found and helped to fix more than 7,500 security flaws in open source software since the inception of the governmentally backed project designed to harden open source software. The company has also identified eleven projects that have been especially responsive in correcting security problems. "Eleven projects have been awarded the newly announced status of Rung 2, including those known as Amanda, NTP, OpenPAM, OpenVPN, Overdose, Perl, PHP, Postfix, Python, Samba, and TCL."

kramed8 writes "As a student myself, after reading the recent 'Slam' article on Java I really began to be concerned with the path of my education. I am currently attending a small Canadian University as a 3rd year Computer Science and Business student set to graduate next year. What seems to have troubled me from reading the article and user comments is that I do not feel as confident as I want to be in C, ASM and other related low-level programming topics. I was taught C++ in my introductory courses, with subsequent classes using C# or Java. My education has not been particularly difficult or time consuming to get good grades, so I have spent my free time dabbling in topics and languages that interest me (ie Multiple GUI Toolkits, Python, Linux). How can I spend my free time in the next year to prepare to enter the work place with a proper toolbox of skills? From what I have been told, there are more jobs for Java and Data Warehouse development teams compared to lower-level programmers. As an undergrad, what skills should I be trying to attain now to further my employability in the future?"

The TIOBE Programming Community Index has declared Python as the Programming Language of 2007 due to a 58% surge in its popularity rating during the year, making it now the sixth most popular programming language and finally surpassing Perl. They also assert that Python has become the "defacto glue language," being "especially beloved by system administrators and build managers."

Stony Stevenson alerts us to a US Department of Homeland Security program in which subcontractors have been examining FOSS source code for security vulnerabilities. InformationWeek.com takes a glass-half-empty approach to reporting the story, saying that for FOSS code on average 1 line in 1000 contains a security bug. From the article: 'A total of 7,826 open source project defects have been fixed through the Homeland Security review, or one every two hours since it was launched in 2006 ...' ZDNet Australia prefers to emphasize those FOSS projects that fixed every reported bug, thus achieving a clean bill of health according to DHS. These include PHP, Perl, Python, Postfix, and Samba.

Zed Shaw, creator of the popular Mongrel HTTP daemon / library, has decided it was high time to tear into the Ruby/Rails community for many different complaints that he has been collecting over the last few years. "Rails is a Ghetto" is Shaw's self-proclaimed exit strategy from the Rails community. "This is that rant. It is part of my grand exit strategy from the Ruby and Rails community. I don't want to be a 'Ruby guy' anymore, and will probably start getting into more Python, Factor, and Lua in the coming months. I've got about three or four more projects in the works that will use all of those and not much Ruby planned. This rant is full of stories about companies and people who've either pissed in my cheerios somehow or screwed over friends. I can back all of them up from emails, IRC chat logs, or with witnesses. Nothing in here is a lie unless it's really obviously a lie through exaggeration, and there's a lot of my opinion as well."

An anonymous reader writes "This OLPC (One-Laptop-Per-Child) tutorial teaches you how to develop Python activities for the XO laptop. It covers the ins and outs of Sugar (the XO user interface, or UI) and the details behind activity development. You will also learn about Python programming, Sugar application program interfaces (APIs) for Python, and platform emulation with QEMU. Learn OLPC application development and help the worlds children."

jedie writes "After reading about different Wiimote hacks on Slashdot I decided to make a video with some demos of my motion-detection library. You can watch the video here. There's a link to the sourcecode (GPL) as well, but the demo is win32 only. It's basically a webcam and some software in python to track LEDs (preferrably IRs). In the demo video, you see the software (albeit badly because of the webcam's IR filter being removed) tracking two differently colored LEDs, so multiplayer is possible. The software can track multiple points easily, and when combined with IR-LEDs, it's easy to simulate one Wiimote (i.e. calculating the distance and angle between two IR-LEDs to determine where the remote is relative to the webcam). I want the code to get some publicity, because I don't have time to work on it (dissertation, blabla) but I don't want the code (however messy it is) to go to waste."

SimHacker writes "Electronic Arts has donated the original 'classic' version of Will Wright's popular SimCity game to the One Laptop Per Child project. SimCity is the epitome of constructionist educational games, and has been widely used by educators to unlock and speed-up the transformational skills associated with creative thinking. It's also been used in the Future City Competition by seventh- and eighth-grade students to foster engineering skills and inspire students to explore futuristic concepts and careers in engineering. OLPC SimCity is based on the X11 TCL/Tk version of SimCity for Unix developed and adapted to the OLPC by Don Hopkins, and the GPL open source code will soon be released under the name "Micropolis", which was SimCity's original working title. SJ Klein, director of content for the OLPC, called on game developers to create 'frameworks and scripting environments — tools with which children themselves could create their own content.' The long term agenda of the OLPC SimCity project is to convert SimCity into a scriptable Python module, integrate it with the OLPC's Sugar user interface and Cairo rendering library. Eventually they hope to apply Seymour Papert's and Alan Kay's ideas about constructionist education and teaching kids to program."

Michael J. Ross writes "Among the hundreds of content management systems (CMSs) available for building Web sites, Plone may not be the most popular; but for the majority of experienced Python developers, it is without equal. This is partly due to Plone being one of the few major CMSs written in Python, and partly due to its powerful extensibility. Customizing and extending Plone, however, are not for the faint of heart. Fortunately, help is at hand, in Professional Plone Development, a book written by seasoned Plone developer Martin Aspeli." Read below for the rest Of Michael's review.

Phoe6 writes "Leading author and programmer, Bruce Eckel, posted some of his concerns on Python 3000 stating that the Python community is failing to address some of the important issues with this major, backward incompatible release. Problems he mentions are concurrency support on multi-core CPUs, easy deployment support, and a standardized user interface, amongst others. He expresses his dissatisfaction at the post titled "Python 3K or Python 2.9?. Guido van Rossum addresses the concerns in a very pragmatic way with his response to Bruce Eckel and calls for more developers to contribute to Python to improve it further. Bruce Eckel concludes with his thoughts that he wants his favorite language to be better with his reply to Guido's reply."

gnalre writes "Every day it seems there is a new publication of a book on perl/python/ruby. Some languages however do not seem to get that sort of attention. One of those under-represented languages is Erlang, however for the first time in 10 years a new Erlang book has been published. As someone who had a brief flirtation with Erlang long ago, I was interested to see how the language had evolved in the intervening decade. I was also curious to re-evaluate Erlang to see what solutions it offered to the present day issues of writing reliable distributed applications." Read on for the rest of Tony's review.