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

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) 4.を解いてみる。

11.8(Exercises) 4.

コード(BBEdit)

sample4.py

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

def countValues(d):
    return len(set(d.values()))

print(countValues(dict(red=1, green=1, blue=2)))
    

入出力結果(Terminal, IPython)

$ ./sample4.py
2
$