Vagrant Up

Vagrant is a pretty cool project which enables you to describe / provision a complete virtual machine instance in a single text file. The Vagrantfile. The basic idea behind Vagrant is that the whole VM is described in a Vagrantfile. Instead of giving somebody a whole VM with several giga bytes you simply share the Vagrantfile.

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Metaclasses, Abstract Base Classes and Class Decorators

Classes such as the type class that are used to create other classes are called metaclasses in python. That is all there is to metaclasses; they are classes that are used in creating other classes. Custom metaclasses are not often used in python but sometimes we want to control the way our classes are created; for example we may want to check that every method has some kind of documentation; this is where custom metaclasses come in handy.

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