August 2025
Intermediate
216 pages
5h 41m
Japanese
Content preview from Pythonレベルアップドリル 初心者から一歩進むための厳選問題集
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.
★★★★★
1
次の数列をリストに格納し、4番目の要素を出力してください。
5 1 3 4 5 12 6 8 1 3
4
リストは、複数の値を格納できるデータ型です。リストは[ ]の中に値を,（カンマ）
で区切って格納します。リストは次のように定義します。
変数名 = [要素1, 要素2, …… , 要素n]
リストの中の順番のことを、インデックスといいます。インデックスは0から始
まるので、4番目の要素のインデックスは 3 となります。
リストで特定のインデックスを指定して要素を取得するには、リストの変数の後
ろに[ ]を記述し、[ ]の中にインデックスを指定します。例えば、リストの変数li
でインデックスがi の要素を取得するには、li[i]と指定します。4番目の要素、つま
りインデックスが3 の要素を取得するには、li[3] と指定します。
li = [5, 1, 3, 4, 5, 12, 6, 8, 1, 3]
li[0] li[1] li[2] li[9]li[8]li[7]li[6]li[5]li[4]li[3]
5
1
3
4
5
12
6
8
1
3
01
li = [5, 1, 3, 4, 5, 12, 6, 8, 1, 3]
02
print(li[3])
16
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.