August 2017
Intermediate to advanced
500 pages
12h 3m
Japanese
Content preview from PythonとJavaScriptではじめるデータビジュアライゼーション
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2
1 章 開発環境の準備
Python 2
か
Python 3
か
現在、
Python
はバージョン
3
へ移行段階です。予想以上に時間がかかっている理由は、多
くの人にとって
Python 2
で問題なく作業できていて、
Python 3
に移行するためには多数の
コードを変換する必要があるからです
†
、また、最近まで
NumPy
や
SciPy
などの一部の人気
ライブラリが
Python 2
でないと適切に動作しなかったこともあるでしょう。
しかし現在では、主なライブラリのほとんどは
Python 3
と互換性があり、本書を使う上
でバージョン問題について悩む必要はないでしょう。残念ながら、数少ない例外の
1
つが
Scrapy
です
‡
。
Scrapy
は本書のツールチェーンの重要なツールであり
§
、
6
章で使います。両
方のバージョンでの実行を強いるつもりはないので、
Python 2
の
Anaconda
パッケージを使
います。
新しい
print
関数
¶
を使うので、
Python 3
ですべての
Scrapy
以外のコードであれば問題
なく機能します。
†‡ §¶
† 世の中には、信頼性の高い変換ツールが多数存在します。
‡ 監訳注：
Scrapy
は
2016
年
5
月に
Scrapy-1.1.0
で
Python3.3
から
Python3.5
までをサポートしました。
§
Scrapy
チームは、
Scrapy
の修正に取り組んでいます。
Scrapy
は
Python
の
Twisted
（監訳注
: Twisted
は
2016
年
3
月に
Twisted-16.0.0
で
Python3.3
から
Python3.5 ...
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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.