Thanks; I'll give it a try.
On 8/22/07, Nils Oliver Kröger <[EMAIL PROTECTED]> wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Robert Dailey schrieb: > > Hi, > > > > I'm wondering where the most appropriate location is to cleanup class > > objects. For example, i have a file handle as an instance attribute in > one > > of my classes and I need to call f.close() on it when the class object > falls > > out of scope. Any ideas? I've tried __del__() but I don't remember this > > working for some reason. I might try it again later just to be positive. > > __del__(self) is the perfectly right place for such cleanup ... it gets > called once your instance is either deleted explicitly by you or it's > handled by the garbage collector when there are no more references. > > The possible problem why this did not work four you is, that the > destruction by the garbage collector cannot be predicted ... it may well > take some time. If you try to open the same file from another class > before yours gets cleaned you run into trouble. > > If you want to "reuse" the file, you will have to delete your classes > instance explicitly using the del statement ... this will also call the > destructor. > > The below code works fine: > > def __del__( self ): > self._file.close() > print "File closed" > > Hope that helps ... Nils > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.6 (MingW32) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org > > iD8DBQFGzISBzvGJy8WEGTcRAiOwAJ94fJza4/GVQsFmbXwsP8kdvQjV5wCfQktw > F/zPJAw0ayjYe5MGxPR1YqI= > =4Hl6 > -----END PGP SIGNATURE----- > -- > http://mail.python.org/mailman/listinfo/python-list >
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