python - 如何将此 Powershell 函数转换为在 Python 中工作？

Question

我有一个 Powershell 函数（它检查进程使用的 CPU 百分比），我需要在我的 Python 代码中运行，而不仅仅是在 Powershell 中。但是，我无法将其转换为在那里工作。

#Powershell code to convert:
$Processname = "notepad"
$CpuCores = (Get-WMIObject Win32_ComputerSystem).NumberOfLogicalProcessors
$Samples = (Get-Counter “\Process($Processname)\% Processor Time”).CounterSamples
($Samples | Select InstanceName, @{Name=”CPU”;Expression=    {[Decimal]::Round(($_.CookedValue / $CpuCores), 2)}}).CPU


#My attempt at converting it to Python:
import subprocess
processToCheck = "notepad"
process = subprocess.Popen(["powershell",
                                """Invoke-Command -ScriptBlock {$CpuCores = (Get-WMIObject Win32_ComputerSystem).NumberOfLogicalProcessors | $Samples = (Get-Counter “\Process(%s)\% Processor Time”).CounterSamples ; Write-Host $Samples}"""
                                % (processToCheck)], stdout=subprocess.PIPE)
print process.communicate()[0]

运行 Python 版本的代码时，我收到以下错误： Traceback (most recent call last): File "", line 3, in % (processToCheck)], stdout=subprocess.PIPE) TypeError: not enough arguments for format string

Answer 1

import subprocess
processToCheck = "notepad"
script = """
    $CpuCores = (Get-WMIObject Win32_ComputerSystem).NumberOfLogicalProcessors;
    $Samples = (Get-Counter "\Process(%s)\%% Processor Time").CounterSamples.CookedValue;
    [Decimal]::Round($Samples / $CpuCores, 2);
""" % (processToCheck)
proc = subprocess.Popen(["powershell", script], stdout=subprocess.PIPE)
print(proc.communicate()[0])
proc.wait()