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SQLAlchemy

By Reuven Lerner 

Although it sometimes might seem as if relational databases have gone the way of the dinosaur, making way for non-relational (NoSQL) databases, such as MongoDB and Cassandra, a very large number of systems still depend on a relational database. more>>

Fabric: a System Administrator's Best Friend

By Adrian Hannah 

Do you routinely make changes to more than a dozen machines at a time? Read this article to find out about a tool to make that task much easier. more>>

New Products

By James Gray 

Please send information about releases of Linux-related products to newproducts@linuxjournal.com or New Products c/o Linux Journal, PO Box 980985, Houston, TX 77098. Submissions are edited for length and content.

Extending GlusterFS with Python

By Jeff Darcy 

Are you a Python programmer who wishes your storage could do more for you? Here's an easy way to add functionality to a real distributed filesystem, in your favorite language. more>>

Python Scripts as a Replacement for Bash Utility Scripts

By Richard Delaney 

For Linux users, the command line is a celebrated part of our entire experience. Unlike other popular operating systems, where the command line is a scary proposition for all but the most experienced veterans, in the Linux community, command-line use is encouraged. more>>

Getting Started with Salt Stack-the Other Configuration Management System Built with Python

By Ben Hosmer 

I was proudly wearing one of my Salt Stack shirts the other day when my daughter asked me, "What is Salt Stack?" I began by explaining the problem it solved. If you have multiple servers and want to do things to those servers, you would need to log in to each one and do those things one at a time on each one. They could be fairly simple tasks like restarting them or checking how long they have been running. Or, you might want to do more complicated things like installing software and then configuring that software based upon your own specific criteria. You also might want to add users and configure permissions for them. more>>

Symbolic Math with Python

By Joey Bernard 

Many programming languages include libraries to do more complicated math. You can do statistics, numerical analysis or handle big numbers. One topic many programming languages have difficulty with is symbolic math. If you use Python though, you have access to sympy, the symbolic math library. more>>

Python in the Cloud

By Adrian Klaver 

A basic introduction to using the Python boto library to interact with AWS services and resources. more>>

The Python Standard Library by Example book cover

Book Excerpt: The Python Standard Library by Example

By Doug Hellmann 
Chapter 3: Algorithms

Python includes several modules for implementing algorithms elegantly and concisely using whatever style is most appropriate for the task. It supports purely procedural, object-oriented, and functional styles. All three styles are frequently mixed within different parts of the same program. more>>

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How to Build an Optimal Hadoop Cluster to Store and Maintain Unlimited Amounts of Data Using Microservers

Realizing the promise of Apache® Hadoop® requires the effective deployment of compute, memory, storage and networking to achieve optimal results. With its flexibility and multitude of options, it is easy to over or under provision the server infrastructure, resulting in poor performance and high TCO. Join us for an in depth, technical discussion with industry experts from leading Hadoop and server companies who will provide insights into the key considerations for designing and deploying an optimal Hadoop cluster.

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