On Thu, 08 Aug 2013 06:08:55 +0200 Stefan Behnel <stefan...@behnel.de> wrote: > Stefan Behnel, 06.08.2013 18:38: > > Antoine Pitrou, 06.08.2013 17:49: > >> Le Tue, 06 Aug 2013 17:18:59 +0200, > >> Stefan Behnel a écrit : > >>> If a Python class with a > >>> __del__ inherits from an extension type that implements > >>> tp_finalize(), then whose tp_finalize() will be executed first? > >> > >> Then only the Python __del__ gets called. It should call > >> super().__del__() manually, to ensure the extension type's > >> tp_finalize gets called. > > > > Ok, but then all I have to do in order to disable C level finalisation for > > a type is to inherit from it and provide an empty __del__ method. > > Oh, and if the Python subtype calls super().__del__() twice, then there is > no longer a guarantee that the finalisers only get executed once, right?
The guarantee is that the *interpreter* will call __del__ once. You're free to call it many times yourself, it's just a method. (but super() itself is supposed to do the right thing, if you're using it properly) And, by the way, I'd like to stress again the parallel with __init__: tp_init can also be called several times if the user calls __init__ manually. Regards Antoine. _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
