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Groups > comp.lang.python > #64506

Re: Self healthcheck

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On Wednesday, January 22, 2014 10:56:30 AM UTC+2, Frank Millman wrote:
> 
> class MainObject:
>     def __init__(self, identifier):
>          self._del = delwatcher('MainObject', identifier)
> class delwatcher:
>     def __init__(self, obj_type, identifier):
>         self.obj_type = obj_type
>         self.identifier = identifier
>         log('{}: id={} created'.format(self.obj_type, self.identifier))
>     def __del__(self):
>         log('{}: id={} deleted'.format(self.obj_type, self.identifier))
> If you do find that an object is not being deleted, it is then 
> trial-and-error to find the problem and fix it. It is probably a circular 
> reference
> 
> Frank Millman

Thanks Frank. Good approach! 

One question - You could do:
class MainObject:
    def __init__(self, identifier):
         self._del = delwatcher(self)
then later 

class delwatcher:
    def __init__(self, tobject):
        self.obj_type = type(tobject)
        self.identifier = id(tobject)
        ...

when creating delwatcher. Was there special reason to not to use them?
is this because of memory is reused when objects are deleted 
and created again so same reference could be for objects created 
in different time slots?

Thanks 

Asaf

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Self healthcheck Asaf Las <roegltd@gmail.com> - 2014-01-21 18:51 -0800
  Re: Self healthcheck Chris Angelico <rosuav@gmail.com> - 2014-01-22 14:08 +1100
    Re: Self healthcheck Asaf Las <roegltd@gmail.com> - 2014-01-22 00:18 -0800
      Re: Self healthcheck Nicholas Cole <nicholas.cole@gmail.com> - 2014-01-22 08:43 +0000
        Re: Self healthcheck Asaf Las <roegltd@gmail.com> - 2014-01-22 07:51 -0800
      Re: Self healthcheck "Frank Millman" <frank@chagford.com> - 2014-01-22 10:56 +0200
        Re: Self healthcheck Asaf Las <roegltd@gmail.com> - 2014-01-22 08:03 -0800
          Re: Self healthcheck Dave Angel <davea@davea.name> - 2014-01-22 13:40 -0500
          Re: Self healthcheck "Frank Millman" <frank@chagford.com> - 2014-01-23 07:36 +0200

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