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Python Sourced[edit] And what defines a 'python activist' anyway? Blowing up Perl installations worldwide? Introduction to Information Retrieval This is the companion website for the following book. Christopher D. Manning, Prabhakar Raghavan and Hinrich Schütze, Introduction to Information Retrieval, Cambridge University Press. 2008. You can order this book at CUP, at your local bookstore or on the internet. The best search term to use is the ISBN: 0521865719. Fix error handling first Created 6 February 2003, last updated 24 January 2007 Often when unexpected errors first occur, I've found problems in the way the error is handled. This isn't surprising: error handling code is often the least-exercised part of your system, so it's natural that there are bugs in it. It is important to fix the error handling problems first, then the original error. Sometimes there is a whole chaing of problems started by the original error condition, then compounded as layers of error handling code mis-handle the condition. Fix all the problems, backwards.
Networks, Crowds, and Markets: A Book by David Easley and Jon Kleinberg In recent years there has been a growing public fascination with the complex "connectedness" of modern society. This connectedness is found in many incarnations: in the rapid growth of the Internet and the Web, in the ease with which global communication now takes place, and in the ability of news and information as well as epidemics and financial crises to spread around the world with surprising speed and intensity. These are phenomena that involve networks, incentives, and the aggregate behavior of groups of people; they are based on the links that connect us and the ways in which each of our decisions can have subtle consequences for the outcomes of everyone else. Stringification Created 9 December 2002, last updated 6 February 2003 One of the greatest features of modern programming environments is also the most humble: ubiquitous stringification. When I first worked in Java, I didn't think much about the java.lang.Object.toString method.
How to be a Programmer: A Short, Comprehensive, and Personal Summary Debugging is the cornerstone of being a programmer. The first meaning of the verb to debug is to remove errors, but the meaning that really matters is to see into the execution of a program by examining it. A programmer that cannot debug effectively is blind. Idealists that think design, or analysis, or complexity theory, or whatnot, are more fundamental are not working programmers. The working programmer does not live in an ideal world. Log message style guide Created 9 December 2002, last updated 6 February 2003 One of the fit-and-finish issues all systems developers need to address is the text of log messages. This is a log message style guide. Once your product ships, it will be in customers' hands.
The Zen of Python Abstract Long time Pythoneer Tim Peters succinctly channels the BDFL's guiding principles for Python's design into 20 aphorisms, only 19 of which have been written down. The Zen of Python Beautiful is better than ugly. Explicit is better than implicit. Simple is better than complex. Style Guide for Python Code Code should be written in a way that does not disadvantage other implementations of Python (PyPy, Jython, IronPython, Cython, Psyco, and such).For example, do not rely on CPython's efficient implementation of in-place string concatenation for statements in the form a += b or a = a + b. This optimization is fragile even in CPython (it only works for some types) and isn't present at all in implementations that don't use refcounting. In performance sensitive parts of the library, the ''.join() form should be used instead. This will ensure that concatenation occurs in linear time across various implementations.Comparisons to singletons like None should always be done with is or is not, never the equality operators.Also, beware of writing if x when you really mean if x is not None -- e.g. when testing whether a variable or argument that defaults to None was set to some other value. The other value might have a type (such as a container) that could be false in a boolean context!
The Principles of Good Programming Heron-Centric: Ruminations of a Language DesignerThe Principles of Good Programmingby Christopher DigginsJuly 24, 2011 Today's post is a lightly edited repost from my blog at The Area, a web-site dedicated to users of Autodesk media and entertainment products. I came up with this list of principles to help with a recent C# training I gave, and I thought that members of the Artima.com community could appreciate these principles and have some interesting insights to share. The principles of good programming are closely related to principles of good design and engineering. The following programming principles have helped me over the years become a better programmer, and I believe can help any developer become more efficient and to produce code which is easier to maintain and that has fewer defects.
“Note to Self” by John Barnette Be Confident Tests build confidence. Write ‘em. Become a Good Programmer in Six Really Hard Steps One of the more popular topics here on the GDNet forums goes something like this: "Hi, I just [bought a computer | wrote a simple game | discovered a game engine] and I want to know where to go from here. I'd like to [accomplish some particular goal] eventually. What do I need to learn to get there?"