May 2024
Intermediate to advanced
200 pages
4h 57m
Japanese
Content preview from Python2年生 スクレイピングのしくみ 第2版 体験してわかる！会話でまなべる！
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LESSON
11
115
Excel
ファイルを読み書きしてみよう
Excel
ファイルを読み込む
逆に、Excelファイルを表データとして読み込んでみましょう。Excelファイルを読み込む
には、
pd.read_excel("ファイル名.xlsx")と命令します。
df = pd.read_excel("ファイル名.xlsx")
先ほど出力したExcelファイル（csv_to_excel2.xlsx）を読み込んで、出力してみましょう。
import pandas as pd
import openpyxl
# Excel
ファイルを読み込む
df = pd.read_excel("csv_to_excel2.xlsx")
print(df)
名前 国語 数学 英語 理科 社会
0 C子 100 84 96 82 94
1 F
菜 96 92 94 92 90
2 E
美 92 62 84 80 78
3 A
太 83 89 76 97 76
4 B
介 66 93 75 88 76
5 D
郎 60 73 63 52 70
※日本語の 1 文字はアルファベットの 2 倍の幅があるため、列がずれて表示されます。
pd.read_excel("ファイル名.xlsx")は、Excelファイルのシートを1枚だけ読み込む命令で
す。そのままでは、シートが複数ある場合も最初の
1枚だけしか読み込めません。
そこで、複数のシートがある場合は、
sheet_nameで読み込みたいシートを指定して読み
込みます。
書式：Excel ファイルを読み込む
chap3/chap3-23.py ...
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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.