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Exercises in Programming Style
book

Exercises in Programming Style

by Cristina Videira Lopes
November 2015
Intermediate to advanced content levelIntermediate to advanced
304 pages
5h 23m
English
Chapman and Hall/CRC
Content preview from Exercises in Programming Style

Chapter 32

Trinity

image

32.1 Constraints

  • The application is divided into three parts: the model, the view and the controller:
    • the model represents the application's data;
    • the view represents a specific rendition of the data;
    • the controller provides for input controls, for populating/updating the model and for invoking the right view.
  • All application entities are associated with of one of these three parts. There should be no overlap of responsibilities.

32.2 A Program in this Style

  1 #!/usr/bin/env python
  2 import sys, re, operator, collections
  3
  4 class WordFrequenciesModel:
  5 """ Models the data. In this case, we're only interested
  6 in words ...
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Publisher Resources

ISBN: 9781482227376