Python - Storing Data Using Other Collection Types(dictionary, values method)

Practical Programming
An Introduction to Computer Science
Using Python 3
(Pragmatic Programmers)
(Pragmatic Bookshelf)
Paul Gries (著) Jennifer Campbell (著)
Jason Montojo (著) Lynn Beighley (編集)

開発環境

• OS X Mavericks - Apple(OS)
• Emacs (CUI)、BBEdit - Bare Bones Software, Inc. (GUI) (Text Editor)
• Python 3.4 (プログラミング言語)

Practical Programming: An Introduction to Computer Science Using Python 3 (Pragmatic Programmers) (Paul Gries (著)、Jennifer Campbell (著)、Jason Montojo (著)、Lynn Beighley (編集)、Pragmatic Bookshelf)のChapter 11(Storing Data Using Other Collection Types)、11.8(Exercises) 7.を解いてみる。

11.8(Exercises) 7.

コード(BBEdit)

sample7.py

#!/usr/bin/env python3
#-*- coding: utf-8 -*-

def isBalanced(rgb):
    balance = sum(rgb.values())
    return balance == 1.0

if __name__ == '__main__':
    import random
    for x in range(20):
        rgb = dict(R=random.randrange(1, 5) / 10,
                   G=random.randrange(1, 5) / 10,
                   B=random.randrange(1, 5) / 10)
        print('RGB({red}, {green}, {blue})): isBalanced: {balanced}'.format(
            red=rgb['R'], green=rgb['G'], blue=rgb['B'],
            balanced=isBalanced(rgb)))

入出力結果(Terminal, IPython)

$ ./sample7.py
RGB(0.2, 0.1, 0.2): isBalanced: False
RGB(0.1, 0.1, 0.3): isBalanced: False
RGB(0.1, 0.2, 0.1): isBalanced: False
RGB(0.2, 0.1, 0.2): isBalanced: False
RGB(0.1, 0.3, 0.4): isBalanced: False
RGB(0.1, 0.1, 0.1): isBalanced: False
RGB(0.2, 0.4, 0.4): isBalanced: True
RGB(0.1, 0.4, 0.2): isBalanced: False
RGB(0.1, 0.4, 0.2): isBalanced: False
RGB(0.1, 0.1, 0.4): isBalanced: False
RGB(0.4, 0.1, 0.3): isBalanced: False
RGB(0.1, 0.4, 0.4): isBalanced: False
RGB(0.2, 0.1, 0.1): isBalanced: False
RGB(0.1, 0.4, 0.2): isBalanced: False
RGB(0.4, 0.3, 0.3): isBalanced: True
RGB(0.1, 0.2, 0.3): isBalanced: False
RGB(0.3, 0.1, 0.4): isBalanced: False
RGB(0.2, 0.3, 0.2): isBalanced: False
RGB(0.4, 0.3, 0.3): isBalanced: True
RGB(0.2, 0.2, 0.2): isBalanced: False
$