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
2
52
カラフルな星を描く
次は、星を描くプログラムを作ります。「まっすぐ進んで、左に144度曲がる」という行
動を
5回くり返して、星を描きます。せっかくなので、あらかじめ色の名前を5つ用意して
おいて、線の色を変化させるようにしてみました。
以下の
8行のプログラムを入力して実行してください（turtle2.pyと異なる部分にはマー
カーを入れているよ）。
from turtle import *
･････ タートルグラフィックスを使う準備
shape("turtle")
･････････････ カメの登場
col = ["orange","limegreen","gold","plum","tomato"]
･･･ 色の名前を5つ用意
for i in range(5):
････････ 以下の3行を5回くり返すこと
color(col[i])
･･････････ 線の色を変える
forward(200)
･･･････････ まっすぐ200進むこと
left(144)
････････････････ 左に144度曲がること
done()
････････････････････････････ おしまい
turtle3.py
5
〜
7
行目は
インデントしよう。
出力結果
星だ。
カッコイイ〜。
描く順番
①
②
③
④
⑤
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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.