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[python]テキストファイルの作成、書き込み

Last updated at Posted at 2022-11-05

環境

環境
pc windows10
言語 python3.11

ファイルの作成、書き込み

open-closeの場合

Python3.11
import os
os.getcdir()  # カレントディレクトリを確認(オプション)

c = "C:/Users/~/codenote.txt"  # 指定のパスを用意

s = 'start'  # 書き込む内容

f = open(c, 'w')  # wで書き込み可能にする
    f.write(s)  # startと書き込む
f.close()

open-closeのセットで書き込まなければならないことが手間
withを使うとclose省略可能

withの場合

with open(c, 'w') as f:
    f.write(s)

with open(c) as f:
    print(f.read())  # 書き込んだ内容確認

参照:https://note.nkmk.me/python-file-io-open-with/

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