Can I execute external programs from PythonCe?

[Igor Kaplan]

Hi pythonce experts,
[Igor Kaplan]
  Would like to ask for the suggestion, is there any way to execute the
external process from pythonce code? There is the os.exec* functions,
however as I understand, they will terminate the current python process and
run the external application. I would need to start the external program and
still be able to continue with my python code.
  If it is more complicated then just calling one function, for example if I
need to create new thread and so on,  I would so much appreciate the little
code example.

  Many, many thanks in advance.

   Igor.

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[René Dudfield]

hi,

this page might help:

http://docs.python.org/lib/module-subprocess.html


I don't know if it works on CE though.


cu,

On Thu, Sep 4, 2008 at 8:29 PM, Igor Kaplan <igor_kaplan@...> wrote:

> Hi pythonce experts,
> [Igor Kaplan]
>  Would like to ask for the suggestion, is there any way to execute the
> external process from pythonce code? There is the os.exec* functions,
> however as I understand, they will terminate the current python process and
> run the external application. I would need to start the external program and
> still be able to continue with my python code.
>  If it is more complicated then just calling one function, for example if I
> need to create new thread and so on,  I would so much appreciate the little
> code example.
>
>  Many, many thanks in advance.
>
>   Igor.
>
> _______________________________________________
> PythonCE mailing list
> PythonCE@...
> http://mail.python.org/mailman/listinfo/pythonce
>

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[jabapyth]

I think what you want is os.startfile

On Thu, Sep 4, 2008 at 6:29 AM, Igor Kaplan <igor_kaplan@...> wrote:

Hi pythonce experts,
[Igor Kaplan]
 Would like to ask for the suggestion, is there any way to execute the
external process from pythonce code? There is the os.exec* functions,
however as I understand, they will terminate the current python process and
run the external application. I would need to start the external program and
still be able to continue with my python code.
 If it is more complicated then just calling one function, for example if I
need to create new thread and so on,  I would so much appreciate the little
code example.

 Many, many thanks in advance.

  Igor.

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[Alexandre Delattre]

Hi,

Recently I've adapted the module osce.py to use ctypes instead of win32*
modules.
<http://mail.python.org/pipermail/pythonce/2005-January/000948.html>
Currently there is no os.system function but a systema function that can
be used this way:

systema('\\full\\path\\to\\program.exe', ['arg1', 'arg2', ...])

Cheers,
Alexandre

from ctypes import *
import os

CreateProcess = cdll.coredll.CreateProcessW
WaitForSingleObject = cdll.coredll.WaitForSingleObject
GetExitCodeProcess = cdll.coredll.GetExitCodeProcess
DWORD = HANDLE = c_ulong

class _PI(Structure):
    _fields_ = [('hPro', HANDLE),
                ('hTh', HANDLE),
                ('idPro', DWORD),
                ('idTh', DWORD)]
   
def _create_process(cmd, args):
    pi = _PI()
    CreateProcess(unicode(cmd),
                  unicode(args),
                  0,
                  0,
                  0,
                  0,
                  0,
                  0,
                  0,
                  byref(pi))
                 
    return pi.hPro
   
def _wait_process(hPro):
    WaitForSingleObject(hPro, c_ulong(0xffffffff))
    return GetExitCodeProcess(hPro)
   
def _quote(s):
    if " " in s:
        return '"%s"' %s
    return s
   
def execv(path, args):
    if not type(args) in (tuple, list):
        raise TypeError, "execv() arg 2 must be a tuple or list"
    path = os.path.abspath(path)
    args = " ".join(_quote(arg) for arg in args)
    _create_process(path, args)
   
def execve(path, args, env):
    execv(path, args)
   
def systema(path, args):
    if not type(args) in (tuple, list):
        raise TypeError, "systema() arg 2 must be a tuple or list"
    path = os.path.abspath(path)
    args = " ".join(_quote(arg) for arg in args)
   
    hPro = _create_process(path, args)
    return _wait_process(hPro)

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[Adam Walley]

Hello,

 

Just thought I'd put my two cents in...

 

Igor, have you tried the os.startfile('\mypath\pyprog.exe', 'myAction') command? Where action is normally 'open', but could be 'print' or some other option.

 

It does not give you a reply from the external program, but launches it as if you had clicked on it from the File Explorer, and it immediately returns to python. The only problem is that PythonCE might lose focus.

 

Alex, thanks for the osce file.

 

Adam

2008/9/6 Alexandre Delattre <alexandre.delattre@...>

Hi,

Recently I've adapted the module osce.py to use ctypes instead of win32* modules.
<http://mail.python.org/pipermail/pythonce/2005-January/000948.html>
Currently there is no os.system function but a systema function that can be used this way:

systema('\\full\\path\\to\\program.exe', ['arg1', 'arg2', ...])

Cheers,
Alexandre

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[Igor Kaplan]

Thanks Alexandre and all for the help. The os.StartFile and os.systema are
exactly what I needed, specially since systema takes arguments.

  Thanks so much.
----------------------------------------------------------------------

Date: Sat, 06 Sep 2008 13:29:25 +0200
From: Alexandre Delattre <alexandre.delattre@...>
Subject: Re: [PythonCE] Can I execute external programs from PythonCe?
To: pythonce@...
Message-ID: <48C26995.9010707@...>
Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"

Hi,

Recently I've adapted the module osce.py to use ctypes instead of win32*
modules.
<http://mail.python.org/pipermail/pythonce/2005-January/000948.html>
Currently there is no os.system function but a systema function that can be
used this way:

systema('\\full\\path\\to\\program.exe', ['arg1', 'arg2', ...])

Cheers,
Alexandre
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