luft·mensch - python

Building a static website: the content provider

Now that you have a basic skeleton up and running, it is time to think about how to push your content into the open. I currently am on a solution using Amazon Web Services but I’ve tried four different approaches so far. I’d like to discuss their respective ...

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Building a static website: the website generator

I became aware of static website generators when I read a blog which was built using Octopress. I was surprised how many of the features worked out of the box that I had wrestled with using Drupal, among them a proper support of Markdown, typographic refinements, code inclusion and sytax ...

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Named bitmap

Every now and then, one needs to keep track of a family of flags (boolean values), which you naturally would store in a numerical field which saves a lot of space and is database-friendly. Although the bit algrebra is straightforward, one often wishes to abstract that a little bit and ...

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Shut up and measure!

You probably have heard of the term premature optimization. It refers to writing “fast” code which is more obfuscated and (more often than not) slower than a straightforward approach — before you have bothered to measure whether it really pays off to spend your cerebral CPU time (which is usually much ...

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How to transpose a matrix

Python is such an expressive language. For instance, you can transpose a matrix in one line:

def transpose(matrix):
    return zip(*matrix)

>>> m = [(1, 2, 3), (4, 5, 6)]
>>> transpose(m)
[(1, 4), (2, 5), (3, 6)]
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The Singleton pattern

In this post I am going to discuss the Singleton pattern in the Python context. Singleton is a design pattern which addresses the problem that one often would like to have a single instance of some class, say, of a database connection pool or a logging facility. This instance is ...

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