Pythonのsubprocess.runでFileNotFoundError: [WinError 2]エラーが発生する

Question

解決したい事
subprocess.run()の下記エラーを解消する方法が知りたいです。

FileNotFoundError: [WinError 2] 指定されたファイルが見つかりません。

import subprocess
proc = subprocess.run(["ls"],stdout = subprocess.PIPE, stderr = subprocess.PIPE)
print(proc.stdout.decode("utf8"))

環境

• Windows10
• Spyder（Python 3.7）

コピペ＆参考にさせていただいたサイト

• subprocessの使い方(Python3.6)
• subprocessについて調べたメモ

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Answer 1

Windowsにはlsコマンド(ファイル)はないので提示エラーが発生しています。
代わりにdirをファイルではなくコマンドとして(shell=True)実行します。
また、コマンドプロンプトのコードページはデフォルトではcp932なので.decode("cp932")とします。
なお出力結果はlsとは異なります。

import subprocess
proc = subprocess.run(["dir"],stdout = subprocess.PIPE, stderr = subprocess.PIPE,shell=True)
print(proc.stdout.decode("cp932"))

Comments

[退会済みユーザー]

can110さん、ご回答ありがとうございます。ご教授いただいたコードで動きました。ありがとうございました！

Answer 2

windows環境にlsコマンドはありません。

とりあえず似たものでよければdirコマンドというのがあるので、lsの代わりにdirを書いてください。

訂正：dirは組み込みコマンドなので、書き換えただけでは呼べません。dirで実行するにはshell=Trueのオプションを追加します。

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[退会済みユーザー]

hayataka2049さん、ご回答ありがとうございます。たしかにlsコマンドないですね。。

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Answer 15

Windowsエラーコード2のFileNotFoundErrorは、subprocess.run snaptik 関数を使用してPythonコードで外部コマンドまたはプロセスを実行する際に、指定されたファイルがシステムから見つからなかったことを示します。コマンドまたはプログラムがシステムの[PATH]環境変数に含まれていることを確認し、含まれていない場合は、subprocess.run呼び出しでコマンドへの完全なパスを指定する必要があります。

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Windows でのエラー コード 2 の FileNotFoundError は、システムが指定されたファイルを見つけられないことを示します。 このエラーは、subprocess.run wordle関数を使用して Python コードで外部コマンドまたはプロセスを実行するときに発生する可能性があります。 実行しようとしているコマンドまたはプログラムが、システムの PATH 環境変数に含まれていることを確認してください。 そうでない場合は、subprocess.run 呼び出しでコマンドへのフル パスを指定する必要がある場合があります。

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