March 2018
Beginner to intermediate
624 pages
16h 10m
Japanese
Content preview from Head First Python 第2版 ―頭とからだで覚えるPythonの基本
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メソッドの動作
メソッドの呼び出し：詳細を理解する
311
ページでメソッド は クラ ス内 で定 義さ れた関 数で あ ると 述べ まし た。また、
CountFromBy
のメソッドを呼び出す例も示しました。
increase
メソッドもドット
表記で呼び出します。
上のような行は、インタプリタが実際に実行するコードと考えるとよいでしょう。イ
ンタプリタは、必ず上の行を次のように変換して呼び出します。
c
がどうなっているか
に注意してください。
CountFromBy.increase(c)
メソッドが定義されて
いるクラスの名前
（増やす）オブジェクト
つまり、コードの中で
CountFromBy.increase(c)
と書いても
c.increase()
と書いたように
動作するってこと？
そうです。しかし、誰もそのようには書きません。
そして、あなたもこのように書いてはいけません。どうせインタ
プリタがやってくれるのに、簡潔に書ける処理に多くのコードを
書く理由があ
るでしょうか？
メソッドの動作を学んでいくうちに、インタプリタがこのよう
に変換する理由がわかってきます。
316
8
章
c.increase()
オブジェクト
メソッドの名前
ドットを付けます。
メソッドの名前
ドットを付けます。
メソッド呼び出し：実際に何が起こ
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.