在python脚本中运行powershell脚本，如何让python在运行时打印powershell输出 [英] Running powershell script within python script, how to make python print the powershell output while it is running
问题描述
我正在编写一个 python 脚本，它检查各种条件并相应地运行一个 powershell 脚本，以帮助我自动从 Windows XP 迁移到 Windows 7.powershell 脚本提供自己的输出，让用户更新正在发生的事情.我想获取 powershell 脚本的输出并将其打印为 python 脚本的输出.我环顾了一些似乎想做同样事情的问题，但它们似乎对我不起作用.最初我尝试使用
I am writing a python script which checks various conditions and runs a powershell script accordingly to help me automate migration from windows XP to windows 7. The powershell script gives its own output giving the user updates as to what is happening. I would like to take the output of the powershell script and print it as output of the python script. I have looked around at some questions which seem to want to do the same thing but they don't seem to be working for me. Initially I tried using
import subprocess
subprocess.call(["C:\Users\gu2124\Desktop\helloworld.ps1"])
正如这里的建议 从 Python 脚本运行 PowerShell 函数 但我发现出它等待程序首先执行并且不提供输出所以我发现我需要使用 subprocess.Popen() 正如这里建议的那样 使用 Popen 在 Python 中执行 Powershell 脚本，我该怎么做获取 Powershell 脚本的输出并将其更新到网页? 所以我尝试了这个
As was suggested here Run PowerShell function from Python script but I found out that this waits for the program to execute first and does not give output so I found out I need to use subprocess.Popen() as was suggusted here Use Popen to execute a Powershell script in Python, how can I get the Powershell script's output and update it to web page? so I tried this
import subprocess
subprocess.Popen(["C:\Users\gu2124\Desktop\helloworld.ps1"], stdout=sys.stdout)
我收到这个错误
Traceback (most recent call last):
File "C:\Users\gu2124\Desktop\pstest.py", line 5, in <module>
subprocess.Popen(["C:\Users\gu2124\Desktop\helloworld.py1"], stdout=sys.stdout)
File "C:\Python27\lib\subprocess.py", line 701, in __init__
errread, errwrite), to_close = self._get_handles(stdin, stdout, stderr)
File "C:\Python27\lib\subprocess.py", line 848, in _get_handles
c2pwrite = msvcrt.get_osfhandle(stdout.fileno())
File "<string>", line 523, in __getattr__
File "C:\Program Files\PyScripter\Lib\rpyc.zip\rpyc\core\netref.py", line 150, in __getattr__
return syncreq(self, consts.HANDLE_GETATTR, name)
File "C:\Program Files\PyScripter\Lib\rpyc.zip\rpyc\core\netref.py", line 71, in syncreq
return conn.sync_request(handler, oid, *args)
File "C:\Program Files\PyScripter\Lib\rpyc.zip\rpyc\core\protocol.py", line 434, in sync_request
raise obj
AttributeError: DebugOutput instance has no attribute 'fileno'
我不完全确定这意味着什么，但从阅读此内容后我认为我的理解 AttributeError: StringIO instance has no attribute 'fileno' 是因为我错误地弄乱了标准输出.我环顾四周，发现这个 为什么我的 python 子进程代码不起作用? 答案说使用 stdout=subprocess.PIPE 所以我尝试了这个
I'm not completely sure what this means but from what I think I understand after reading this AttributeError: StringIO instance has no attribute 'fileno' is that it is because I am messing with the stdout incorrectly. I looked a around more and I found this Why won't my python subprocess code work? where the answers said to use stdout=subprocess.PIPE so I tried this
import subprocess
subprocess.Popen(["C:\Users\gu2124\Desktop\helloworld.ps1"], stdout=subprocess.PIPE)
这也没有给我输出最后我看到了这个 http://www.pythonforbeginners.com/os/subprocess-for-system-administrators 并将我的代码更改为此
which also does not give me output Finally I saw this http://www.pythonforbeginners.com/os/subprocess-for-system-administrators and changed my code to this
import subprocess
p = subprocess.Popen(["powershell","C:\Users\gu2124\Desktop\helloworld.ps1"], stdout=subprocess.PIPE)
print p.communicate
我认为这可能是因为我最初尝试从命令行运行 powershell 脚本，所以我必须先打开 powershell.当我直接在命令行中输入这些命令时，它的工作方式应该是这样，但是当我通过 python 脚本运行它时，它给出了这个
I thought that it may because I am initially trying to run a powershell script from the command line so I have to open powershell first. When I type these commands directly into the command line it works the way it should but when I run it through the python script it gives this
<bound method Popen.communicate of <subprocess.Popen object at 0x00000000026E4A90>>
我想这是一个改进，但不是我期待的Hello world".我不知道接下来我应该尝试做什么才能让它发挥作用.任何帮助将不胜感激
which is an improvement I guess but not the "Hello world" I was expecting. I have no idea what I should try to do next to get this to work. Any help would be greatly appreciated
另外，如果这里需要我使用的 powershell 脚本，它是
Also if the powershell script I am using is needed here it is
$strString = "Hello World"
write-host $strString
function ftest{
$test = "Test"
write-host $test
}
我尝试像第一个答案中建议的那样升级到 python 3.3，但我仍然无法让它工作.我使用了命令 p = subprocess.Popen(['powershell.exe', "C:\\Users\\gu2124\\Desktop\\helloworld.ps1"], stdout=sys.stdout)并且我确定文件在那里，但我收到这个错误:
I tried upgrading to python 3.3 like was suggested in the first answer but I still can't get it to work. I used the command p = subprocess.Popen(['powershell.exe', "C:\\Users\\gu2124\\Desktop\\helloworld.ps1"], stdout=sys.stdout) and am sure the file is there but am getting this error:
Traceback (most recent call last):
File "<pyshell#3>", line 1, in <module>
p = subprocess.Popen(['powershell.exe', "C:\\Users\\gu2124\\Desktop\\helloworld.ps1"], stdout=sys.stdout)
File "C:\Python27\lib\subprocess.py", line 701, in __init__
errread, errwrite), to_close = self._get_handles(stdin, stdout, stderr)
File "C:\Python27\lib\subprocess.py", line 848, in _get_handles
c2pwrite = msvcrt.get_osfhandle(stdout.fileno())
UnsupportedOperation: fileno
推荐答案
确保您可以运行 powershell 脚本(默认情况下它是禁用的).很可能你已经这样做了.http://technet.microsoft.com/en-us/library/ee176949.aspx
Set-ExecutionPolicy RemoteSigned
在你的powershell脚本helloworld.py上运行这个python脚本:
Run this python script on your powershell script helloworld.py:
# -*- coding: iso-8859-1 -*-
import subprocess, sys
p = subprocess.Popen(["powershell.exe",
"C:\\Users\\USER\\Desktop\\helloworld.ps1"],
stdout=sys.stdout)
p.communicate()
此代码基于 python3.4(或任何 3.x 系列解释器)，但它也适用于 python2.x 系列.
This code is based on python3.4 (or any 3.x series interpreter), though it should work on python2.x series as well.
C:\Users\MacEwin\Desktop>python helloworld.py
Hello World
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