November 2025
Intermediate to advanced
984 pages
16h 17m
Japanese
Content preview from Fluent Python 第2版 ―Pythonicな思考とコーディング手法
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1章Pythonのデータモデル
Guidoは言語設計の美学に関するすばらしいセンスの持ち主です。世の中の言語設計者の多くは、理論的には美しいけれど誰も使いたがらないような言語を生み出しがちです。しかしGuidoは、（理論的な美しさという点では少し劣るけれども）プログラムを書くのが楽しくなるような言語を作れる稀有な人です。
—— Jim Hugunin
Jythonの作者、AspectJの共同開発者、.NET DLRのアーキテクト†1
[†1] 『Story of Jython』（https://fpy.li/1-1）より。Samuele PedroniとNoel Rappinによる『Jython Essentials』（https://fpy.li/1-2、O'Reilly）への序文として執筆されました。
Pythonが備える優れた特質の1つとして、その一貫性が挙げられます。Pythonをしばらく使っていると、未知の機能についても確信を持って正しく利用できるようになります。
Python以前に他のオブジェクト指向言語を学んだ場合、例えばcollection.len()の代わりにlen(collection)を使うのは奇妙だと感じるかもしれません。しかしこれはPythonのデータモデル（以降、単に「データモデル」）の一部であり、Pythonicなコードを実現するための鍵になります。このようなAPIを通じて、各自のオブジェクトは規範に沿った機能を活用できるようになります。
このデータモデルは、フレームワークとしてのPythonを記述したものと考えることができます。ここでは言語自体の構成要素のインターフェースが明確に表現されています。例えばシーケンス、関数、イテレータ、コルーチン、クラス、コンテキストマネージャなどがここに含まれます。 ...
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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.