January 2024
Beginner to intermediate
560 pages
8h 38m
Japanese
Content preview from Raspberry Piクックブック 第4版
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5章 Pythonの基本Python Basics
Raspberry Piのプログラミングには数多くの言語が使えるが、最もよく使われているのはPythonだ。実は、Raspberry Piの「Pi」は「Python」から来ているのだ。
この章では、Raspberry Piのプログラミングに役立つレシピをたくさん紹介する。
レシピ5.1：Python 2とPython 3のどちらを使うか
●課題 Pythonを使いたいが、どちらのバージョンを使ってよいかわからない。
●解決 バージョン2に戻ったほうがうまく解決できる問題に直面するまでは、Python 3を使う。＊1
＊1 訳注：Raspberry Pi OS Bookwormではインストール可能なパッケージからpython2が削除されているため、python2が必要であれば旧バージョンのBullseyeを使うようにしてほしい。また、Python 2の公式サポートは2020年1月1日で終了している。バージョン2.7.18が2020年1月1日にcode freezeされ、4月20日にリリースされたが、これ以降のバージョンのリリース予定はない。https://www.python.org/dev/peps/pep-0373/
Raspberry Pi OSにPython 2をインストールするには、以下のコマンドを実行する。
$ sudo apt update $ sudo apt install python2
Python 2は、python2というコマンドで実行できる。
●解説 Pythonの最新バージョンがPython 3となってからすでに何年もたっているが、いまだに多くの人々がPython ...
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