[Xapian-discuss] Twisted + Xapian WriteableDatabase leaves db_lock file on exit.

[James Aylett]

On Wed, May 03, 2006 at 04:43:38PM +0200, Terry Jones wrote:

> I don't know python very well. From what I read (google(__del__ not being
> called) gets plenty of hits), there is no guarantee that __del__ will ever
> be called and, it seems, even less guarantee if the interpreter itself is
> about to go away. Maybe someone with more knowledge of python can clarify
> this.

I've certainly seen this in Python, yes. From the language reference:

> It is not guaranteed that __del__() methods are called for objects
> that still exist when the interpreter exits.

Note also that if you have circular references, Python-level __del__()
methods will prevent the cycle detector from garbage collecting those
objects.

J

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  James Aylett                                                  xapian.org
  james at tartarus.org                               uncertaintydivision.org