Re: Daemon loses file reference after a while.

References	<bfa7b7ac-d288-4889-8e48-dd0ff0cad711@googlegroups.com> <87y5m9p5m8.fsf@handshake.de>
From	Ian Kelly <ian.g.kelly@gmail.com>
Date	2012-07-24 14:02 -0600
Subject	Re: Daemon loses __file__ reference after a while.
Newsgroups	comp.lang.python
Message-ID	<mailman.2551.1343160202.4697.python-list@python.org> (permalink)

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On Tue, Jul 24, 2012 at 8:59 AM, Dieter Maurer <dieter@handshake.de> wrote:
> "ivdneut@gmail.com" <ivdneut@gmail.com> writes:
>
>> I have a daemon process that runs for a considerable amount of time (weeks on end) without any problems. At some point I start getting the exception:
>>
>> Exception info: Traceback (most recent call last):
>>   File "scheduler.py", line 376, in applyrule
>>     result = execrule(rule_code)
>>   File "scheduler.py", line 521, in execrule
>>     rulepath = os.path.dirname(__file__)+"/"+'/'.join(rule['modules'])+"/"+rule['rulename']
>> NameError: name '__file__' is not defined
>>
>> This section of the code is executed in this process *all the time*, but suddenly stops working. I have been searching for similar issues online, but only come accross people having problems because they run the script interactively. This is not the case here.
>
> This is strange indeed.
>
> I have only one vague idea: should something try to terminate the
> process, modules would start to lose their variables during shutdown.

That's a good theory.  Or perhaps something in the code itself is
handling the module's globals() and very occasionally does something
that is incorrect and destructive.

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Daemon loses __file__ reference after a while. "ivdneut@gmail.com" <ivdneut@gmail.com> - 2012-07-24 04:48 -0700
  Re: Daemon loses __file__ reference after a while. Ervin Hegedüs <airween@gmail.com> - 2012-07-24 14:24 +0200
    Re: Daemon loses __file__ reference after a while. "ivdneut@gmail.com" <ivdneut@gmail.com> - 2012-07-24 05:41 -0700
    Re: Daemon loses __file__ reference after a while. "ivdneut@gmail.com" <ivdneut@gmail.com> - 2012-07-24 05:41 -0700
  Re: Daemon loses __file__ reference after a while. Laszlo Nagy <gandalf@shopzeus.com> - 2012-07-24 14:31 +0200
  Re: Daemon loses __file__ reference after a while. Dieter Maurer <dieter@handshake.de> - 2012-07-24 16:59 +0200
    Re: Daemon loses __file__ reference after a while. Paul Rubin <no.email@nospam.invalid> - 2012-07-24 12:32 -0700
      Re: Daemon loses __file__ reference after a while. Ian Kelly <ian.g.kelly@gmail.com> - 2012-07-24 14:08 -0600
  Re: Daemon loses __file__ reference after a while. Ian Kelly <ian.g.kelly@gmail.com> - 2012-07-24 14:02 -0600

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