Win XP: How to hide command window for sub processes?
in [Python]
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From: Chris Rebert on 29 Oct 2009 06:44 On Thu, Oct 29, 2009 at 3:25 AM, Rüdiger Ranft <_rdi_(a)web.de> wrote: > klausfpga schrieb: >> Hi, >> >> I have a Python script which wants to start a subprocess and wait for >> it to finish. >> >> However I would like to have NO command window popping up during >> execution. > > You need to specify the hide parameter for windows. > > import subprocess > kwargs = {} > if subprocess.mswindows: >   su = subprocess.STARTUPINFO() >   su.dwFlags |= subprocess.STARTF_USESHOWWINDOW >   su.wShowWindow = subprocess.SW_HIDE >   kwargs['startupinfo'] = su > process = subprocess.Popen( (r'c:\python25\python.exe', >   r'd:\projekte\bar.py'), **kwargs ) Interestingly, none of that appears to be documented. I smell a docs bug waiting to be reported. Cheers, Chris -- http://blog.rebertia.com
From: Martin P. Hellwig on 29 Oct 2009 07:37 Chris Rebert wrote: > On Thu, Oct 29, 2009 at 3:25 AM, Rüdiger Ranft <_rdi_(a)web.de> wrote: >> klausfpga schrieb: >>> Hi, >>> >>> I have a Python script which wants to start a subprocess and wait for >>> it to finish. >>> >>> However I would like to have NO command window popping up during >>> execution. >> You need to specify the hide parameter for windows. >> >> import subprocess >> kwargs = {} >> if subprocess.mswindows: >> su = subprocess.STARTUPINFO() >> su.dwFlags |= subprocess.STARTF_USESHOWWINDOW >> su.wShowWindow = subprocess.SW_HIDE >> kwargs['startupinfo'] = su >> process = subprocess.Popen( (r'c:\python25\python.exe', >> r'd:\projekte\bar.py'), **kwargs ) > > Interestingly, none of that appears to be documented. Except for here: http://msdn.microsoft.com/en-us/library/ms682425%28VS.85%29.aspx > I smell a docs bug waiting to be reported. > > Cheers, > Chris > -- > http://blog.rebertia.com -- MPH http://blog.dcuktec.com 'If consumed, best digested with added seasoning to own preference.'
From: Chris Rebert on 29 Oct 2009 07:46 On Thu, Oct 29, 2009 at 4:37 AM, Martin P. Hellwig <martin.hellwig(a)dcuktec.org> wrote: > Chris Rebert wrote: >> >> On Thu, Oct 29, 2009 at 3:25 AM, Rüdiger Ranft <_rdi_(a)web.de> wrote: >>> >>> klausfpga schrieb: >>>> >>>> Hi, >>>> >>>> I have a Python script which wants to start a subprocess and wait for >>>> it to finish. >>>> >>>> However I would like to have NO command window popping up during >>>> execution. >>> >>> You need to specify the hide parameter for windows. >>> >>> import subprocess >>> kwargs = {} >>> if subprocess.mswindows: >>>  su = subprocess.STARTUPINFO() >>>  su.dwFlags |= subprocess.STARTF_USESHOWWINDOW >>>  su.wShowWindow = subprocess.SW_HIDE >>>  kwargs['startupinfo'] = su >>> process = subprocess.Popen( (r'c:\python25\python.exe', >>>  r'd:\projekte\bar.py'), **kwargs ) >> >> Interestingly, none of that appears to be documented. > > Except for here: > http://msdn.microsoft.com/en-us/library/ms682425%28VS.85%29.aspx I was referring to the following bits of the subprocess module used in the above code: subprocess.mswindows subprocess.STARTUPINFO() subprocess.STARTF_USESHOWWINDOW subprocess.SW_HIDE none of which are mentioned in the module's docs: http://docs.python.org/dev/py3k/library/subprocess.html Cheers, Chris -- http://blog.rebertia.com
From: Martin P. Hellwig on 29 Oct 2009 07:57 Chris Rebert wrote: <cut> >> Except for here: >> http://msdn.microsoft.com/en-us/library/ms682425%28VS.85%29.aspx > > I was referring to the following bits of the subprocess module used in > the above code: Me too actually :-) > subprocess.mswindows > subprocess.STARTUPINFO() > subprocess.STARTF_USESHOWWINDOW > subprocess.SW_HIDE > > none of which are mentioned in the module's docs: > http://docs.python.org/dev/py3k/library/subprocess.html Since this is platform specific stuff I would argue that it has no business being repeated, although a link to where it is documented elsewhere would have been nice. -- MPH http://blog.dcuktec.com 'If consumed, best digested with added seasoning to own preference.'
From: Chris Rebert on 29 Oct 2009 08:37 On Thu, Oct 29, 2009 at 4:57 AM, Martin P. Hellwig <martin.hellwig(a)dcuktec.org> wrote: > Chris Rebert wrote: > <cut> >>> >>> Except for here: >>> http://msdn.microsoft.com/en-us/library/ms682425%28VS.85%29.aspx >> >> I was referring to the following bits of the subprocess module used in >> the above code: > > Me too actually :-) > >> subprocess.mswindows >> subprocess.STARTUPINFO() >> subprocess.STARTF_USESHOWWINDOW >> subprocess.SW_HIDE >> >> none of which are mentioned in the module's docs: >> http://docs.python.org/dev/py3k/library/subprocess.html > > Since this is platform specific stuff I would argue that it has no business > being repeated, although a link to where it is documented elsewhere would > have been nice. True, the Windows APIs are documented but it's not mentioned at all that they're accessible in a certain form from subprocess. Many other stdlib modules (e.g. `os` - http://docs.python.org/library/os.html) include and list platform-specific functions, I don't see why subprocess should be different. Cheers, Chris -- http://blog.rebertia.com
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