Question

我有一个函数def tldomaint，它通过子进程call_checkout执行Tasklist命令。一切都按预期工作，但我从TaskList得到奇怪的输出。我不确定这是由于我的错误捕获还是仅仅是一个奇怪的Tasklist。我希望有人可以帮助指出这个问题。

输出示例：

Attempting to make remote connections and gather data:

Targeted User: xpuser

ERROR: The RPC server is unavailable.

1
WARNING: User credentials cannot be used for local connections

ERROR: The RPC server is unavailable.

1

输出中的1是我所指的奇怪。

以下是该功能。

def tldomaint(serverlist, domain, username, password, targetuser):
    nlist = serverlist
    print "\nAttempting to make remote connections and gather data:\n"
    print "Targeted User: {0}\n" .format(targetuser)
    for serverl in nlist:
        try:
            out = subprocess.check_output(["tasklist", "/V", "/S", serverl, "/U", domain + "\\" + username, "/P", password, "/FO", "List", "/FI", "USERNAME eq %s\\%s" % (domain, targetuser)])
            users = [item for item in out.split() if domain in item and targetuser in item]
            sortedl = set(users)
            for name in sortedl: 
                if name in sortedl != '':
                    print "Targeted User Found On {0}\n" .format(serverl)
                    print name
                else:
                    print "User Not Found"            
        except CalledProcessError as e:
            print(e.returncode)
    return sortedl

Answer 1

您正在打印流程返回代码：

except CalledProcessError as e:
    print(e.returncode)

来自subprocess.check_output() documentation：

如果返回代码非零，则会引发CalledProcessError。

发生错误时，tasklist会将错误消息写入stderr，并将退出代码设置为1. subprocess.check_output()然后引发CalledProcessError异常（如文档所述）并且您捕获该异常然后打印返回代码。

删除print()语句，您的神秘1将消失。

如果您想在Python中处理问题，请将stderr重定向到stdout;仍然会引发异常，但您仍然可以读取输出：

out = subprocess.check_output(["tasklist", "/V", "/S", serverl, "/U",
                               domain + "\\" + username, "/P", password, "/FO", "List", 
                               "/FI", "USERNAME eq %s\\%s" % (domain, targetuser)],
                              stderr=subprocess.STDOUT)

并在您的异常处理程序中：

except CalledProcessError as e:
    errormessage = e.output
    # do something with the error message

子进程函数显示奇数输出

1 个答案: