Strangeness: Cannot write to a file from a process created by Windows Task Scheduler ...
Al Fansome
al_fansome at hotmail.com
Mon Oct 26 13:48:53 EDT 2009
Do you "import time"?
Sandy Walsh wrote:
> Hi there,
>
> Seeing some really weird behavior and perhaps someone has seen something
> similar:
>
> I have a python script that launches as a Windows Scheduled Task. The
> program simply opens a disk file and writes some text to it:
>
> ---
> f = open("waiting.txt", "w")
> x = 0
> while 1:
> f.write("Sleeping: %d\r\n" % x)
> x += 1
> time.sleep(2)
>
> f.close()
> ---
>
> I've run it under my user account. I've run it as Local Account. I've
> run it via pythonw and python ... only one way works:
>
> When I run with full credentials (not local account) and python (not
> pythonw) I get output in the file (and a CMD window appears while it's
> running). In every other combination it creates the 'waiting.txt' file,
> but doesn't write any output to the file. The length of the file is 0
> bytes.
>
> Anyone have ideas what could be causing this? I suspect it's blocking on
> something, but I can't imagine where.
>
> There is no stderr/stdout output anywhere in the program so it's not
> blocking on anything stdio related (that I can imagine)
>
> Thoughts?
> -Sandy
>
>
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