Henry Huang keenhenry

Transforming Code into Beautiful, Idiomatic Python

Notes from Raymond Hettinger's talk at pycon US 2013 video, slides.

The code examples and direct quotes are all from Raymond's talk. I've reproduced them here for my own edification and the hopes that others will find them as handy as I have!

Looping over a range of numbers

for i in [0, 1, 2, 3, 4, 5]:

The Best of the Best Practices (BOBP) Guide for Python

A "Best of the Best Practices" (BOBP) guide to developing in Python.

In General

Values

"Build tools for others that you want to be built for you." - Kenneth Reitz
"Simplicity is alway better than functionality." - Pieter Hintjens

	#!/usr/bin/env python

	def classtree(cls, indent=0):
	print '.' * indent, cls.__name__
	for subcls in cls.__subclasses__():
	classtree(subcls, indent + 3)

	classtree(BaseException)

	public class DisjSets
	{
	public DisjSets( int numElements )
	{
	s = new int [ numElements ];

	for ( int i = 0; i < s.length; ++i )
	s[i] = -1;
	}

	<!DOCTYPE html>
	<html>
	<head>
	<script data-main="usage" src="http://requirejs.org/docs/release/1.0.8/comments/require.js"></script>
	</head>
	<body>
	<p>Check your JavaScript console for output!</p>
	</body>
	</head>

	#!/usr/bin/env python

	"""Problem Description:

	There is an array consisting of N elements, all the elements are integer numbers (can be positive, zero or negative).

	A transformation step is to be applied to the array, which is detailed as follows:

	Each element has to be incremented or decremented by 1 in a single step