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
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
レガシーコードの苦悩
1. Python 2
はどうなの？
この本の執筆時点では、主に
2
つの
Python
が使われています。この本では Python 3 を採用しまし
た。ここまで読んだあなたは、Python 3 についてはすでに十分な知識を得られているでしょう。
Python 3
には新たな言語開発や拡張機能がすべて適用されています。マイナーリリースサイクルは
12
カ月から
18
カ月です。
3.6
は
2016
年
12
月にリリースされました。
3.7
は
2018
年
6
月に登場する予
定です（
https://www.python.org/dev/peps/pep-0537/
）。
Python 2
は、ここしばらくリリース
2.7
のまま止まっています。
Python
のコア開
発者たち（
Python
開発を主導する人たち）が次世代は
Python 3
とし、
Python 2
は静か
に消えてもらうと決めたからです。この方針にはれっきとした技術的な背景があり
ましたが（
https://www.python.org/dev/peps/pep-0404/
）、結局、
Python 3
（次世代の
Python
）が登場したのは、
2008
年後半でした。こんなに時間がかかるとは誰も予想
していませんでした。
そして
2008
年後半から現在までに起こったことだけで
1
冊の書籍が書けるほどです。
Python 2
は頑固に退場を拒否しました。膨大な
Python 2
コードのインストールと開発者が
（現在でも）存在し、アップグレードが遅々として進まない分野があります。 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.