python Popen与psexec一起挂起-不良结果 [英] Python Popen hanging with psexec - undesired results

问题描述

我在subprocess.Popen和我认为是管道的问题上遇到了问题.我有以下代码块，从cli运行时，在100％的时间内都不会出现问题:

I'm having an issue with subprocess.Popen and what I believe to be pipes. I have the following block of code which works without issue 100% of the time when running from the cli:

    p = subprocess.Popen("psexec \\\\" + serverName.get() + " cmd /c \
        ver & \
        echo %USERDOMAIN% & \
        dir /a C:\pagefile.sys | find \"pagefile.sys\" & \
        dir C:\ | find \"bytes free\" & \
        dir D:\ | find \"bytes free\" ", \
        stdin=None, stdout=subprocess.PIPE, stderr=None)

    ### Assign the results from the Popen
    results = p.communicate()[0]
    rc = p.returncode

    print 'results: ' + str(results)
    sys.exit()

输出:

PsExec v1.90 - Execute processes remotely
Copyright (C) 2001-2007 Mark Russinovich
Sysinternals - www.sysinternals.com

The device is not ready.
cmd exited on XXXXXXX with error code 1.

Microsoft Windows XP [Version 5.1.2600]
PROD
02/23/2011  09:37 AM     1,610,612,736 pagefile.sys
              49 Dir(s)  17,104,437,248 bytes free

我已经完成了该程序，但是一旦我用py2exe对其进行编译，它将立即挂起或崩溃.我将问题归结为py2exe，而不喜欢子进程中未定义的stdin，out或err.然后，我修改了我的代码，如下所示:

I had this program complete, but once I compiled it with py2exe, it would just hang or crash. I tracked that issue down to py2exe not liking undefined stdin, out, or err in subprocess. I then modified my code as follows:

    p = subprocess.Popen("psexec \\\\" + serverName.get() + " cmd /c \
        ver & \
        echo %USERDOMAIN% & \
        dir /a C:\pagefile.sys | find \"pagefile.sys\" & \
        dir C:\ | find \"bytes free\" & \
        dir D:\ | find \"bytes free\" ", \
        stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)

    p.stdin.close()

    ### Assign the results from the Popen
    results = p.communicate()[0]
    rc = p.returncode

    print 'results: ' + str(results)
    sys.exit()

此代码也可以100％地起作用，但是当我打印结果时，它仅显示标准的psexec消息，而不显示执行的命令的输出.

This code works 100% of the time as well, but when I print results, it only shows me the standard psexec messages, not the output of the commands executed.

输出:

results:
PsExec v1.90 - Execute processes remotely
Copyright (C) 2001-2007 Mark Russinovich
Sysinternals - www.sysinternals.com

cmd exited on XXXXXXX with error code 1.

我试图通过在子进程选项中添加shell = true来解决此问题，但是当我这样做时，该程序仅挂起了99％的时间.它实际上将在1％的时间内运行.我注意到，在程序挂起时，如果我进入任务管理器并手动终止psexec进程，则会显示所需的输出.这让我发疯，而且我一直在搜寻，却一无所获.该代码在WinXP python v2.7上运行.如果您有任何疑问或需要任何其他信息，请告诉我.

I tried to combat this by adding shell=true to the subprocess options, but when I do that the program just hangs 99% of the time. It will actually run 1% of the time . I noticed that while the program is hanging, if I go into task manager and manually kill the psexec process, the desired output is shown. This is driving me crazy and I've been searching forever without finding anything. The code is running on WinXP python v2.7. Please let me know if you have any questions or need any additional information.

吊号:

    p = subprocess.Popen("psexec \\\\" + serverName.get() + " cmd /c \
        ver & \
        echo %USERDOMAIN% & \
        dir /a C:\pagefile.sys | find \"pagefile.sys\" & \
        dir C:\ | find \"bytes free\" & \
        dir D:\ | find \"bytes free\" ", \
        stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, shell=True)

    p.stdin.close()

    ### Assign the results from the Popen
    results = p.communicate()[0]
    rc = p.returncode

    print 'results:' + str(results)
    sys.exit()

从任务管理器中杀死psexec.exe后所需的输出:

Desired output after killing psexec.exe from task manager:

results:
PsExec v1.90 - Execute processes remotely
Copyright (C) 2001-2007 Mark Russinovich
Sysinternals - www.sysinternals.com


PROD
02/23/2011  09:37 AM     1,610,612,736 pagefile.sys
              49 Dir(s)  17,102,487,552 bytes free
The device is not ready.

推荐答案

尝试使用-i运行psexec 对我有用

try running the psexec with -i it works for me

p = subprocess.Popen("psexec " "-i "  . . . 

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