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When Pythons Attack (2 tags)
Mark Lutz, coauthor of the recently released Learning Python, 2nd Edition, offers tips, gleaned from his first-hand experience as a Python trainer, on the most common programming and coding mistakes that new Python programmers make. For seasoned Python programmers, Mark offers tips on working with Python's larger features, such as datatypes, functions, modules, and classes.

Five Habits for Successful Regular Expressions (2 tags)
For many programmers, writing regular expressions is a black art. They stick to the features they know and hope for the best. Tony Stubblebine, author of Regular Expression Pocket Reference, says programmers can avoid a lot of trial and error by adopting these five habits for regular expression development. The code examples in this article use Perl, PHP, and Python, but the advice Tony espouses is applicable to nearly any regex implementation.