IOError in windows service

[Gabriel Genellina]

En Mon, 26 May 2008 06:41:26 -0300, Aspersieman <aspersieman at gmail.com> escribió:

> I have a script (attached) that creates a windows service. Basically the
> service periodically runs a program 'program.exe'. This all works fine,
> but during testing I discovered that if I include any 'print' statements
> (used to debug the service when its run in 'debug' mode), when _not_ in
> debug mode, it throws an error:
>
> <error>
> The instance's SvcRun() method failed
>   File "C:\Python25\Lib\site-packages\win32\lib\win32serviceutil.py",
> line 785, in SvcRun
>     self.SvcDoRun()
>   File "C:\Program Files\Program\MyService.py", line 28, in SvcDoRun
>     print "Entering while loop..."
> <type 'exceptions.IOError'>: (9, 'Bad file descriptor')
> </error>
>
> I have removed the 'print' statements, after which the service runs
> fine, but was just curious to find out the reason for this error.

Usually services don't have a console attached so sys.stdout is invalid. Just don't print anything...

-- 
Gabriel Genellina