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.
手際のよい更新
関数についてわかったことを更新する
時間をかけて関数引数の働きを調べました。関数についてわかったことを
まとめましょう。
■
関数はコードの再利用を促すだけでな
く、複雑さを隠すこともできる。何度も
使うような複雑な行は、簡単な関数呼び
出しで抽象化する。
■
関数の引数には関数の
def
行でデフォル
ト値を指定できる。デフォルト値を指定
すると、関数呼び出し時にその引数は省
略できる。
■
引数は位置だけでなく、キーワードでも
指定できる。その際には、任意の順序で
指定できる（キーワードを使うと曖昧さ
がなくなるので、位置は重要ではなくな
る）。
関数はとてもいいね。
関数を利用したり
共有するにはどうするの？
さまざまな方法があります。
共有する価値のあるコードがあれば、関数の利用
や共有のために最適な方法を尋ねるのは当然です。
この質問には複数の答えがあります。次のページで
は関数をパッケージ化して配布し、自分が
作成した
関数を自身や他の人が簡単に利用できるような方法
を学びます。
172
4
章
モジュールの作成は簡単だけど……
モジュールの作成は簡単です。共有したい関数のファイルを作成するだけです。
モジュールがあれば、モジュールの中身をプログラムで使うのも簡単です。
import
文
でモジュールをインポートするだけです。 ...
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.