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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 20

Constructivist

image

20.1 Constraints

  • Every single function checks the sanity of its arguments and either returns something sensible when the arguments are unreasonable or assigns them reasonable values.
  • All code blocks check for possible errors and escape the block when things go wrong, setting the state to something reasonable, and continuing to execute the rest of the function.

20.2 A Program in this Style

  1 #!/usr/bin/env python
  2 import sys, re, operator, string, inspect
  3
  4 #
  5 # The functions
  6 #
  7 def extract_words(path_to_file):
  8 if type(path_to_file) is not str or not path_to_file:
  9  return []
 10
 11 try:
 12  with open(path_to_file) ...
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Publisher Resources

ISBN: 9781482227376