Re: [pygtk] PyGTK object escapes garbage collection
On Fri, Dec 24, 2010 at 5:28 AM, Hrvoje Niksic wrote: > The problem you describe sounds like it might be related to this infamous > PyGTK bug: > > https://bugzilla.gnome.org/show_bug.cgi?id=546802 > > In our tests the problems show up when a Python object that participates in > a cycle is referenced only through a GTK widget. When GC takes place, > Python's cycle-breaker incorrectly concludes that the whole cycle is > unreachable and runs tp_clear on all objects. The objects are, of course, > still reachable through PyGTK, and unfortunately now quite broken. > > A number of workarounds are available: simply access the widget's __dict__, > which forces it to switch to a different reference-counting strategy. Or > store a reference to your object in a global variable or container. To me, this is clearly a pygtk bug. It should not be creating cycles like this. Also, it can create cycles without your participation. If you use builder, it can find callbacks using introspection. I have some modules that use introspection and have a few "connect" calls as well. To have to do all the introspection yourself in your own modules is ridiculous. > ___ > pygtk mailing list pygtk@daa.com.au > http://www.daa.com.au/mailman/listinfo/pygtk > Read the PyGTK FAQ: http://faq.pygtk.org/ > -- Gerald Britton ___ pygtk mailing list pygtk@daa.com.au http://www.daa.com.au/mailman/listinfo/pygtk Read the PyGTK FAQ: http://faq.pygtk.org/
Re: [pygtk] PyGTK object escapes garbage collection
The problem you describe sounds like it might be related to this infamous PyGTK bug: https://bugzilla.gnome.org/show_bug.cgi?id=546802 In our tests the problems show up when a Python object that participates in a cycle is referenced only through a GTK widget. When GC takes place, Python's cycle-breaker incorrectly concludes that the whole cycle is unreachable and runs tp_clear on all objects. The objects are, of course, still reachable through PyGTK, and unfortunately now quite broken. A number of workarounds are available: simply access the widget's __dict__, which forces it to switch to a different reference-counting strategy. Or store a reference to your object in a global variable or container. ___ pygtk mailing list pygtk@daa.com.au http://www.daa.com.au/mailman/listinfo/pygtk Read the PyGTK FAQ: http://faq.pygtk.org/
Re: [pygtk] PyGTK object escapes garbage collection
Thanks for your answers Gerald.
button.connect("clicked", weakref.proxy(self.hello))
Well, I get this when I click the button:
ReferenceError: weakly-referenced object no longer exists
That's surprising too, since the hello() method of "page" certainly does
exist until "page" gets unreachable... and, at the time I click, "page"
can be reached through the notebook.get_nth_page() method.
Unfortunately, I'm not familiar enough with how the Python and the
GObject reference counting systems interact to understand what's going on.
I will wait for more answers, then submit a bug report.
Cheers,
Pierre
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Re: [pygtk] ANNOUNCE: PyGTK All-in-one Installer 2.22.5
thank you. That's great! On Fri, Dec 24, 2010 at 10:05 AM, Dieter Verfaillie wrote: > On 24/12/2010 09:44, Tim Lebedkov wrote: >> thank you for the effort. I use the installers from >> http://www.optionexplicit.be/projects/gnome-windows/20101102/ in >> Npackd. Is it the right location? > > I keep everything on optionexplicit.be available as long as > possible, but sometimes I need to remove older files (due to > resource constraints). The good news is that all installers > from the 20101102 directory are are now also hosted on > http://download.gnome.org: > > PyGTK (as the pygtk-2.22.0-1 revision): > http://download.gnome.org/binaries/win32/pygtk/2.22/ > > PyGObject (as the pygobject-2.26.0-1 revision): > http://download.gnome.org/binaries/win32/pygobject/2.26/ > > PyCairo: > http://download.gnome.org/binaries/win32/pycairo/1.8/ > > PyGooCanvas: > http://download.gnome.org/binaries/win32/pygoocanvas/0.14/ > > PyGtkSourceView2: > http://download.gnome.org/binaries/win32/pygtksourceview/2.10/ > > PyRsvg: > http://download.gnome.org/binaries/win32/gnome-python-desktop/2.32/ > >> Will you still provide installers >> for single libraries? > > Yes. Be assured the separate installers are not going away, they > are even a requirement to build the all-in-one installer. > > mvg, > Dieter > ___ pygtk mailing list pygtk@daa.com.au http://www.daa.com.au/mailman/listinfo/pygtk Read the PyGTK FAQ: http://faq.pygtk.org/
Re: [pygtk] ANNOUNCE: PyGTK All-in-one Installer 2.22.5
On Fri, Dec 24, 2010 at 06:55:56AM +0100, Dieter Verfaillie wrote: > We are pleased to announce release 2.22.5 of the PyGTK All-in-one > installer for Windows. Thanks Dieter! I strongly believe that this is a great boost in PyGTK adoption and diffusion. A very nice christmas gift! sandro *:-) -- Sandro Dentella *:-) http://www.reteisi.org Soluzioni libere per le scuole http://sqlkit.argolinux.orgSQLkit home page - PyGTK/python/sqlalchemy ___ pygtk mailing list pygtk@daa.com.au http://www.daa.com.au/mailman/listinfo/pygtk Read the PyGTK FAQ: http://faq.pygtk.org/
Re: [pygtk] ANNOUNCE: PyGTK All-in-one Installer 2.22.5
On 24/12/2010 09:44, Tim Lebedkov wrote: > thank you for the effort. I use the installers from > http://www.optionexplicit.be/projects/gnome-windows/20101102/ in > Npackd. Is it the right location? I keep everything on optionexplicit.be available as long as possible, but sometimes I need to remove older files (due to resource constraints). The good news is that all installers from the 20101102 directory are are now also hosted on http://download.gnome.org: PyGTK (as the pygtk-2.22.0-1 revision): http://download.gnome.org/binaries/win32/pygtk/2.22/ PyGObject (as the pygobject-2.26.0-1 revision): http://download.gnome.org/binaries/win32/pygobject/2.26/ PyCairo: http://download.gnome.org/binaries/win32/pycairo/1.8/ PyGooCanvas: http://download.gnome.org/binaries/win32/pygoocanvas/0.14/ PyGtkSourceView2: http://download.gnome.org/binaries/win32/pygtksourceview/2.10/ PyRsvg: http://download.gnome.org/binaries/win32/gnome-python-desktop/2.32/ > Will you still provide installers > for single libraries? Yes. Be assured the separate installers are not going away, they are even a requirement to build the all-in-one installer. mvg, Dieter ___ pygtk mailing list pygtk@daa.com.au http://www.daa.com.au/mailman/listinfo/pygtk Read the PyGTK FAQ: http://faq.pygtk.org/
Re: [pygtk] ANNOUNCE: PyGTK All-in-one Installer 2.22.5
Hello Dieter, thank you for the effort. I use the installers from http://www.optionexplicit.be/projects/gnome-windows/20101102/ in Npackd. Is it the right location? Will you still provide installers for single libraries? --Tim On Fri, Dec 24, 2010 at 6:55 AM, Dieter Verfaillie wrote: > We are pleased to announce release 2.22.5 of the PyGTK All-in-one > installer for Windows. > > More information can be found in the README file at: > https://github.com/dieterv/pygtk-installer#readme > > * What is it? > = > The PyGTK All-in-one installer provides an alternative installation > method for PyGTK users on Windows. It bundles PyGTK, PyGObject, > PyCairo, PyGtkSourceView2, PyGooCanvas, PyRsvg, the gtk+-bundle > and Glade in one handy installer. > > Currently 32 bit Python 2.6 and 2.7 versions are supported > on Windows XP and up. > > Some screenshots can be seen at: > https://github.com/dieterv/pygtk-installer/wiki > > * Where to get it? > == > > binaries: > > http://download.gnome.org/binaries/win32/pygtk/2.22/pygtk-all-in-one-2.22.5.win32-py2.6.msi > md5sum : 3acbd0ef3c13c1112d6f119bdb076ac6 > size : 32,3M > > http://download.gnome.org/binaries/win32/pygtk/2.22/pygtk-all-in-one-2.22.5.win32-py2.7.msi > md5sum : 7a0272a0bd5c857b994f2eed92af199f > size : 32,3M (33091012) > > source code: > > https://github.com/dieterv/pygtk-installer/tree/release-2.22.5 > https://github.com/dieterv/pygtk-installer/tarball/release-2.22.5 > https://github.com/dieterv/pygtk-installer/zipball/release-2.22.5 > > > Enjoy! > > The PyGTK Team > ___ > pygtk mailing list pygtk@daa.com.au > http://www.daa.com.au/mailman/listinfo/pygtk > Read the PyGTK FAQ: http://faq.pygtk.org/ > ___ pygtk mailing list pygtk@daa.com.au http://www.daa.com.au/mailman/listinfo/pygtk Read the PyGTK FAQ: http://faq.pygtk.org/
