读取从打开新命令提示符的 os.Popen 中的文本

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英文:

Read text from os.Popen that opens new command prompt

问题

import os
import subprocess
import time
import ctypes, sys

需要以管理员权限运行此脚本以打开命令提示符窗口

def is_admin():
try:
return ctypes.windll.shell32.IsUserAnAdmin()
except:
return False

if is_admin():
# 仅当具有管理员特权时才能运行程序。

# 获取脚本所在目录。
currentDirectory = os.path.dirname(os.path.abspath(__file__)
coreServerFullPath = os.path.join(currentDirectory, "Core\CoreServer\Server\CoreServer/bin\Debug")
isExistCoreServer = os.path.exists(coreServerFullPath)

echoServerFullPath = os.path.join(currentDirectory, "Echo\Server\EchoServer/bin\Debug")
isExistEchoServer = os.path.exists(echoServerFullPath)

# 这是MSBuild.exe的路径,以后我们可以获取MSBuild.exe作为独立程序并更改路径。
msBuildPath = "C:\Program Files (x86)\Microsoft Visual Studio/2019\Professional\MSBuild\Current\Bin/amd64"
pathOfCorecsProjFile = os.path.join(currentDirectory, "Core\CoreServer\Server\CoreServer\CoreServer.csproj")
pathOfEchocsProjFile = os.path.join(currentDirectory, "Echo\Server\EchoServer\EchoServer.csproj")

def OpenServers():
    os.chdir(coreServerFullPath)
    # os.system("start /wait cmd /c {command}")
    command_line = [coreServerFullPath, '-c', '-s']
    result = subprocess.Popen(['start', 'cmd', '/k', 'CoreServer.exe -c -s'], shell=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, close_fds=True)
    time.sleep(4)
    output = result.stdout.read()
    print(output)

def Test():
    os.chdir(coreServerFullPath)
    output = subprocess.check_output(['CoreServer.exe', '-c', '-s'], shell=True)
    time.sleep(4)
    print(output)

def Test1():
    os.chdir(coreServerFullPath)
    result = subprocess.check_output(['CoreServer.exe', '-c', '-s'])
    print(result.stdout)

if (not isExistCoreServer):
    if (os.path.isfile(pathOfCorecsProjFile)):
        os.chdir(msBuildPath)
        startCommand = "start cmd /c"
        command = "MSBuild.exe " + pathOfCorecsProjFile + " /t:build /p:configuration=Debug"
        # os.system(startCommand+command)
        cmd = subprocess.Popen(startCommand + command)

if (not isExistEchoServer):
    if (os.path.isfile(pathOfEchocsProjFile)):
        os.chdir(msBuildPath)
        startCommand = "start cmd /c"
        command = "MSBuild.exe " + pathOfEchocsProjFile + " /t:build /p:configuration=Debug"
        os.system(startCommand + command)

if (isExistCoreServer and isExistEchoServer):
    Test1()

else:
# 以管理员权限重新运行程序
ctypes.windll.shell32.ShellExecuteW(None, "runas", sys.executable, " ".join(sys.argv), None, 1)

英文:

I am using os.Popen to open a new command prompt window and run a process. How can I read the text within that command prompt?

import os

def OpenServers():
        os.chdir(coreServerFullPath)
        process=os.popen("start cmd /K CoreServer.exe -c -s").read()
        print(process) #Prints nothing

This is the output text that's shown in the command prompt which I want to print.

读取从打开新命令提示符的 os.Popen 中的文本

Edit

I also tried this way, but no luck

 from subprocess import Popen, PIPE, STDOUT
 def OpenServers():
        os.chdir(coreServerFullPath)
        result = subprocess.Popen(['start', 'cmd', '/k', 'CoreServer.exe -c -s'], shell=True, stdin=PIPE, stdout=PIPE, stderr=STDOUT, close_fds=True)
        time.sleep(4)
        output=result.stdout.read()
        print(output) #Prints nothing

Edit 2

I tried something like this. Problem is, it makes me run 2 times. The first time when I run, the console is blank. The second time when I run it works but gives me an error because I can only open one instance of the server,.

def Test1():
        os.chdir(coreServerFullPath)
        result = subprocess.check_output(['CoreServer.exe', '-c', '-s'])
        print(result.stdout)

Here is the full code that I was trying. I can run CoreServer only as an admin so doing it like this

import os
import sys
import subprocess
from subprocess import Popen, CREATE_NEW_CONSOLE
from subprocess import Popen, PIPE, STDOUT
import time
import ctypes, sys

#The command prompts must be opened as administrators. So need to run the python script with elevated permissions. Or else it won't work
def is_admin():
    try:
        return ctypes.windll.shell32.IsUserAnAdmin()
    except:
        return False

if is_admin():
    #The program can only run with elevated admin privileges.
    
    #Get the directory where the file is residing.
    currentDirectory=os.path.dirname(os.path.abspath(__file__))
    coreServerFullPath=os.path.join(currentDirectory,"Core\CoreServer\Server\CoreServer/bin\Debug")
    isExistCoreServer=os.path.exists(coreServerFullPath)

    echoServerFullPath=os.path.join(currentDirectory,"Echo\Server\EchoServer/bin\Debug")
    isExistEchoServer=os.path.exists(echoServerFullPath)

    #For now this is the MSBuild.exe path. Later we can get this MSBuild.exe as a standalone and change the path.
    msBuildPath="C:\Program Files (x86)\Microsoft Visual Studio/2019\Professional\MSBuild\Current\Bin/amd64"
    pathOfCorecsProjFile=os.path.join(currentDirectory,"Core\CoreServer\Server\CoreServer\CoreServer.csproj")
    pathOfEchocsProjFile=os.path.join(currentDirectory,"Echo\Server\EchoServer\EchoServer.csproj")


    def OpenServers():
        os.chdir(coreServerFullPath)
        #os.system("start /wait cmd /c {command}")
        command_line = [coreServerFullPath, '-c', '-s']
        result = subprocess.Popen(['start', 'cmd', '/k', 'CoreServer.exe -c -s'], shell=True, stdin=PIPE, stdout=PIPE, stderr=STDOUT, close_fds=True)
        time.sleep(4)
        output=result.stdout.read()
        print(output)
        #process=os.popen("start cmd /K CoreServer.exe -c -s").read()
        #print(process)

    def Test():
        os.chdir(coreServerFullPath)
        output = subprocess.check_output(['CoreServer.exe', '-c', '-s'],shell=True)
        time.sleep(4)
        print(output)
    
    def Test1():
        os.chdir(coreServerFullPath)
        result = subprocess.check_output(['CoreServer.exe', '-c', '-s'])
        print(result.stdout)


    if(not isExistCoreServer):
        if(os.path.isfile(pathOfCorecsProjFile)):
            os.chdir(msBuildPath)
            startCommand="start cmd /c"
            command="MSBuild.exe "+pathOfCorecsProjFile+" /t:build /p:configuration=Debug"
            #os.system(startCommand+command)
            cmd=subprocess.Popen(startCommand+command)

    if(not isExistEchoServer):
        if(os.path.isfile(pathOfEchocsProjFile)):
            os.chdir(msBuildPath)
            startCommand="start cmd /c"
            command="MSBuild.exe "+pathOfEchocsProjFile+" /t:build /p:configuration=Debug"
            os.system(startCommand+command)

    if(isExistCoreServer and isExistEchoServer):
        Test1()

else:
    # Re-run the program with admin rights
    ctypes.windll.shell32.ShellExecuteW(None, "runas", sys.executable, " ".join(sys.argv), None, 1)

答案1

得分: 1

对于这种情况,获取输出的最佳方法是将其转储到日志文件中,然后从文件中读取输出。(最好在运行程序之前创建日志文件)

这里有一个简单的示例:

result = subprocess.Popen('start cmd /k CoreServer.exe -c -s >> log.log 2>&1', shell=True, stdin=PIPE, stdout=PIPE, stderr=STDOUT, close_fds=True)
time.sleep(4)
with open('log.log', 'r') as logg:
    print(logg.read())

这应该打印出所需的输出。希望对你有帮助。

英文:

For this type of situations the best way to get the output is to dump it to a log file and then read the output from the file. (Is better to create the log file before running the program)

Here you have a simple example:

result = subprocess.Popen('start cmd /k CoreServer.exe -c -s >> log.log 2>&1', shell=True, stdin=PIPE, stdout=PIPE, stderr=STDOUT, close_fds=True)
time.sleep(4)
with open('log.log', 'r') as logg:
    print(logg.read())

This should print the desired output. Hope it works for you.

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  • 本文由 发表于 2023年2月24日 17:04:04
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