系统在 python 中找不到指定的文件错误

Question

我想运行使用 python 脚本执行 power-shell 命令：

timedetail = subprocess.check_output('powershell.exe Get-WinEvent -LogName Microsoft-Windows-TerminalServices-LocalSessionManager/Operational  | Where { ($_.ID -eq "25" -or  $_.ID -eq "21") -and ($_.TimeCreated -gt [datetime]::Today.AddDays(-2))} |Select TimeCreated , Message | sort-Object -Property TimeCreated -Unique | Format-List', startupinfo=st_inf,shell=False,stderr=subprocess.PIPE, stdin=subprocess.PIPE).decode('ANSI').strip().splitlines()

但这不适用于 python 显示错误的代码：

[WinError 2] The system cannot find the file specified

任何人都可以帮助如何使用 python 代码运行 powershell 命令？

提前致谢。

Answer 1

我会使用 run 而不是 check_output。 run has been added in Python 3.5 and it is recommended to use it prior to call, check_call or check_output. See this other question.

run returns 一个 CompletedProcess 即 documented here.

这是您脚本的更新版本：

import subprocess


def run_powershell_command(command):
    completed = subprocess.run(["powershell", "-Command", command], capture_output=True)
    return completed


get_logs_command = 'Get-WinEvent -LogName Microsoft-Windows-TerminalServices-LocalSessionManager/Operational  | Where { ($_.ID -eq "25" -or  $_.ID -eq "21") -and ($_.TimeCreated -gt [datetime]::Today.AddDays(-2))} |Select TimeCreated , Message | sort-Object -Property TimeCreated -Unique | Format-List'
result = run_powershell_command(get_logs_command)

for line in result.stdout.splitlines():
    print(line)

系统在 python 中找不到指定的文件错误

The system cannot find the file specified error in python

python-3.x

powershell

subprocess

get-winevent