September 2014
Intermediate to advanced
332 pages
6h 48m
Japanese
Content preview from Python文法詳解
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.
196
第 6 章 関数とクラス
spam
料理を注文します。
spam --
スパムの数
ham --
ハムの数
egg --
卵の数
ドキュメンテーション文字列はただの文字列なのでどのように書いても構いませんが、引用符に
'
〜
'
や
"
〜
"
記号は使わず、複数行ではない、一行だけの文字列でも、
"""
〜
"""
を使って記述
することが多いようです。
6.1.5
関数アノテーション
関数を定義する
def
文には、注釈を記入して、引数や戻り値の意味やデータ型を、ソースコード
上のドキュメントとして残せます。注釈は、次の形式で記述します。
def
関数名
(
引数名
:
式
,
引数名
:
式
, ...) ->
式
:
...
引数の注釈は、引数名に続けてコロン
:
と、注釈となる式を指定します。引数にデフォルト値を
指定する場合は、デフォルト値の前に
引数名
:
式
=
デフォルト値
の形式で指定します。
戻り値の注釈は、関数定義の末尾に
->
に続けて、注釈となる式を記述します。
引数と戻り値の注釈となる式は、通常の代入文や数式で指定する、普通の式を記述します。文字
定数やデータ型、数式など、なんでも構いません。注釈は、
help()
などで表示できます。
>>> def spam(ham:'ham
', egg:dict, bacon:1 if ver > 1 else 2) -> int:
...
>>> help(spam)
Help on function spam in module __main__:
spam(ham: 'ham
の数
', egg: ...
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.