子进程：PyDev控制台与cmd.exe [英] subprocess: PyDev console vs. cmd.exe

问题描述

我试图使用subprocess.call从python调用一个进程，如下所示：

 从子进程import call 
 
 exePath ='C：\\Test\\EXE.exe'
 inPath ='C：\\Test\\IN.in'
 outPath ='C：\\Test\\OUT.out'
 call（[exePath，inPath，outPath]）
  

这会从EXE.exe打印几行，后跟句柄无效 - 但作为一个字符串，而不是一个错误，这使我认为它可能是一个消息从EXE.exe：

 解压缩解决方案... 
 0.0％句柄无效。 
 

但是当我打开cmd.exe并粘贴：

  C：\Test\EXE.exe C：\Test\IN.in C：\Test\OUT.out 
  

它工作正常。

有人可能指向我的方向？

我在Windows 7上运行Python 2.7 64位。

EDIT：

现在看起来像PyDev中的问题，控制台无法处理stdout从进程覆盖线。代码从IDLE运行良好。仍在寻找PyDev的修复...

解决方案

我认为你有这个问题，因为PyDev不是一个真正的终端（即：在Python中，从PyDev运行时，os.isatty（）将返回False）。

如果exe真的依赖于有一个终端， PyDev可以做...

现在，你可以使用Python来调用：

：

  popen = subprocess.Popen（['myexe'，'params']，creationflags = subprocess.CREATE_NEW_CONSOLE）
 popen.wait（）
  

在Linux中（因为CREATE_NEW_CONSOLE不可用）：

  args = ['xterm'，'-e'] + ['myexe'，'params'] 
 popen = subprocess。 Popen（args）
 popen.wait（）
  

it：）

我认为Aptana Studio有一个实际的终端替换，但没有PyDev集成来启动它... ...

I'm trying to call a process from python using subprocess.call as shown below:

from subprocess import call

exePath = 'C:\\Test\\EXE.exe'
inPath = 'C:\\Test\\IN.in'
outPath = 'C:\\Test\\OUT.out'
call([exePath, inPath, outPath])

This prints a few lines from EXE.exe followed by "The handle is invalid" -- but as a string, not as an error, which makes me think it might be a message from the EXE.exe:

Unzipping Solution...
0.0%                       The handle is invalid.

However when I open cmd.exe and paste in:

C:\Test\EXE.exe C:\Test\IN.in C:\Test\OUT.out

it works fine.

Can someone point me in the right direction?

Thanks!

I'm running Python 2.7 64-bit on Windows 7.

EDIT:

It looks now like a problem in PyDev where the console cannot handle the the stdout from the process overwriting lines. The code runs fine from IDLE. Still looking for a fix for PyDev...

解决方案

I think you're having this issue because PyDev is not a real terminal (i.e.: in Python, os.isatty() will return False when run from PyDev).

If the exe really relies on having a terminal, currently there's not much that PyDev can do...

For now, you can make your call from Python as:

In windows:

popen = subprocess.Popen(['myexe', 'params'], creationflags=subprocess.CREATE_NEW_CONSOLE)
popen.wait()

In Linux (as the CREATE_NEW_CONSOLE is not available):

args = ['xterm', '-e'] + ['myexe', 'params']
popen = subprocess.Popen(args)
popen.wait()

so that it works regardless of who's calling it :)

I think Aptana Studio does have an actual terminal replacement, but there's no PyDev integration to launch things on it...

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