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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関数
＋
モジュール
＝
標準ライブラリ
Python
の標準ライブラリはとても豊富です。
OS
に依存しないコードを数多く用意しています。
例えば、
os
というモジュールを調べてみましょう（すぐに
datetime
モジュールに戻ります）。
os
モジュールは、オペレーティングシステムとやり取りするためのプラットフォームに依存しない
手段を持っています。
os
モジュールの
getcwd
という関数は、現在の作業ディレクトリを返します。
Python
プログラムでこの関数をインポートして呼び出す、一般的な方法を挙げます。
from os import getcwd
where_am_I = getcwd()
関連する関数の集合がモジュールです。標準ライブラリには多くのモジュールがあります。
enum
random
json
os
datetime
sys
time
mkdir
getcwd
chmod
os
getcwd
mkdir
getcwd
chmod
1
章 基本
you are here
9
モジュールから関数を
インポートし、
必要に応じて
呼び出します。
関数
関数はモジュールの
一部で、
モジュールは
標準ライブラリの
一部です。
関数
は
モジュールの中に、
モジュール
は
標準ライブラリの
中にある。
今のところ、これらのモジュールそれぞれが何をするかは気にしないでください。
次のページでその一部を簡単に紹介し、残りの多くは後で説明します。
標準ライブラリは
Python
の財産です。例えばデータの処理から
ZIP
アーカイブの操作、メール
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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.