id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
247	make template objects pickle-able	wotevah	cmlenz	"Pickle refuses to serialize template objects with the following error:

""a class that defines __slots__ without defining __getstate__ cannot be pickled""

It was referring to QName, but after adding __getstate__() to that it complains about some directives as well.

It would be useful to add the necessary __getstate__/__setstate__ methods to each class that has __slots__, so pickle could work. I have thought about writing a filter to replace the offending classes since I've done something similar for consistent charset handling, but use of __slots__ makes QName and the others difficult to subclass and besides, it doesn't seem like the right thing to do.

I know the loader caches templates. I want to have more flexibility in choosing what kind of cache to use, for example a persistent cache using memcached that can be used across different processes and survive restarts.
"	enhancement	new	minor	0.9	General	0.4.4		pickle