Message 253367 - Python tracker

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In-reply-to
Author	serhiy.storchaka
Recipients	jaraco, rhettinger, serhiy.storchaka
Date	2015年10月23日.08:05:14
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1445587515.83.0.974709582893.issue25447@psf.upfronthosting.co.za>

Content
Using lru_cache() is an implementation detail. I think that lru_cache wrapper should be perfect wrapper, it should support all protocols that are supported by wrapped function (at the same extent as original Python implementation). Proposed simple patch adds support for pickling, copying and deep-copying lru_cache wrappers. lru_cache wrapper is serialized as global object, i.e. deepcopy() returns the same object, as was in 3.4. Implementing true deep copying (with any semantic) is not so easy, especially for Python implementation.

Content

Using lru_cache() is an implementation detail. I think that lru_cache wrapper should be perfect wrapper, it should support all protocols that are supported by wrapped function (at the same extent as original Python implementation).
Proposed simple patch adds support for pickling, copying and deep-copying lru_cache wrappers. lru_cache wrapper is serialized as global object, i.e. deepcopy() returns the same object, as was in 3.4. Implementing true deep copying (with any semantic) is not so easy, especially for Python implementation.

History
Date	User	Action	Args
2015年10月23日 08:05:15	serhiy.storchaka	set	recipients: + serhiy.storchaka, rhettinger, jaraco
2015年10月23日 08:05:15	serhiy.storchaka	set	messageid: <1445587515.83.0.974709582893.issue25447@psf.upfronthosting.co.za>
2015年10月23日 08:05:15	serhiy.storchaka	link	issue25447 messages
2015年10月23日 08:05:15	serhiy.storchaka	create

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