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The Evolution of Finger: cleaning up the finger code

Introduction

This is the third part of the Twisted tutorial :doc:`Twisted from Scratch, or The Evolution of Finger <index>` .

In this section of the tutorial, we'll clean up our code so that it is closer to a readable and extensible style.

Write Readable Code

The last version of the application had a lot of hacks. We avoided sub-classing, didn't support things like user listings over the web, and removed all blank lines -- all in the interest of code which is shorter. Here we take a step back, subclass what is more naturally a subclass, make things which should take multiple lines take them, etc. This shows a much better style of developing Twisted applications, though the hacks in the previous stages are sometimes used in throw-away prototypes.

:download:`finger18.tac <listings/finger/finger18.tac>`

.. literalinclude:: listings/finger/finger18.tac