August 2022
Intermediate to advanced
200 pages
5h 16m
Japanese
Content preview from Python1年生 第2版 体験してわかる！会話でまなべる！プログラミングのしくみ
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Chapter
3
108
モジュールを作ってみよう
LESSON 15の「消費税（10％）を計算してくれるプログラムを書こう」で作った税込み
金額を計算するプログラムを、
2つのファイルに分けて作ってみましょう。
1つ目のファイルには「モジュール」を作り、2つ目のファイルには「そのモジュールを
読み込んで動かすプログラム」を作ります。
モジュールを作ります
1
まず、IDLEの［File］メニュー→［New File］を選択して、1つ目のファイルを作りましょう。
このファイルには、関数部分だけを書いて「モジュール」にします。
tax.pyというファイル名で
保存しましょう。
def postTaxPrice(price):
ans = price * 1.1
return ans
モジュールの保存場所
ファイルが複数に分かれるということは、それぞれのファイルが「どこに
あるか」が重要になってきます。
2 つのファイルが別々のフォルダに入っ
ていたら、
import するとき見つからなくてエラーになってしまいます。
今回のように単純なプログラムであれば、同じフォルダ内に一緒に入れて
おけばわかりやすいでしょう。
もっとプログラムの規模が大きくなってきたらフォルダに分けて入れて管
理する必要が出てきます。そうなると、
import で呼び出すときや、関数名
で呼び出すときも、フォルダ名もつけて指定する必要があります。
CAUTION
tax.py
Chapter
3
108
モジュールを作ってみよう
LESSON 15の「消費税（10％）を計算してくれるプログラムを書こう ...
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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.