Python执行powershell命令

问题描述：

我尝试执行PowerShell命令来获取内存使用情况并获得结果。Python执行powershell命令

import subprocess 
output = subprocess.call(["powershell.exe", "Get-Counter -Counter "+'"\memory\\available mbytes"'+" -MaxSamples 10 -SampleInterval 1"]) 
try: 
    subprocess.check_output("Get-Counter -Counter "+'"\memory\\available mbytes"'+" -MaxSamples 10 -SampleInterval 1", shell=TRUE) 
except subprocess.CalledProcessError, e: 
    print "subproces CalledProcessError.output = " + e.output 

print output

这是成功执行命令，但只得到以下结果：

subproces CalledProcessError.output = 
0

我怎样才能获得PowerShell的结果回来？

请问您的命令（'找柜台-Counter “\内存\可用兆字节” -MaxSamples 10 -SampleInterval 1'）在交互式工作PowerShell会话？ –

答

你需要做的：

try: 
    output = subprocess.check_output(
       ["powershell.exe", "Get-Counter", 
       "-Counter "+r'"\memory\available mbytes"', 
       "-MaxSamples 10", "-SampleInterval 1"], 
       shell=True) 
except subprocess.CalledProcessError, e: 
    print "subproces CalledProcessError.output = " + e.output 
print output

通知True而非TRUE供应"powershell.exe"到check_output和前r串与\在

但我会强烈建议使用psutil而不是尝试获取和解析PowerShell结果：

In [4]: import psutil 

In [5]: psutil.virtual_memory() 
Out[5]: svmem(total=17087684608L, available=8599142400L, percent=49.7, used=8488542208L, free=8599142400L) 

In [6]: psutil.swap_memory() 
Out[6]: sswap(total=38059204608L, used=14400655360L, free=23658549248L, percent=37.8, sin=0, sout=0)

答

上面同样的例子，但为Python 3：

try: 
    output = subprocess.check_output(
       ["powershell.exe", "Get-Counter", 
       "-Counter "+r'"\memory\available mbytes"', 
       "-MaxSamples 10", "-SampleInterval 1"], 
       shell=True) 
except subprocess.CalledProcessError as e: 
    print ("subproces CalledProcessError.output =", e.output) 
print (output.decode())

Python执行powershell命令

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