Windows service and pyc files

[Gabriel Genellina]

En Thu, 05 Apr 2007 13:50:16 -0300, Laszlo Nagy  
<gandalf at designaproduct.biz> escribió:

> 1. subprocess.Popen cannot redirect stderr and stdout when called from a
> win32 service. This is not documented, and makes debugging almost
> impossible.

Without the patch menctioned in my previous message, you must redirect all  
stdin, stdout AND stderr (because the child cannot inherit the handles  
 from the parent service, as a service has no standard handles assigned  
usually) or none of them.

> 2. sys.executable becomes "pythonservice.exe" inside a win32 service.
>
> If I specify  r"C:\Python25\python.exe" instead of sys.executable, and
> if I do not specify stdout and stderr parameters for subprocess.Popen,
> then my program  starts to work. Here arises the question: how can I
> find r"C:\Python25\python.exe" from inside a win32 service? Can I use  
> this:
>
> interpreter = os.path.join(  os.path.split(sys.executable),[0],
> os.sep,os.sep,os.sep,'Python.exe' )

I think you meant to write: os.path.join(os.path.split(sys.executable)[0],
   os.pardir, os.pardir, os.pardir, 'python.exe')

pythonservice.exe is so Windows-specific that using os.pardir only makes  
the code harder to read.
Anyway I'd use os.path.join(sys.prefix, 'python.exe') (sys.prefix would be  
C:\Python25 in your case)

-- 
Gabriel Genellina