Message 222095 - Python tracker

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Author	r.david.murray
Recipients	holdenweb, r.david.murray
Date	2014-07-02.12:06:21
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1404302781.63.0.588123901269.issue21904@psf.upfronthosting.co.za>
In-reply-to

Content
Yeah, closures can be a bit counter-intuitive. Assuming I'm understanding this correctly, the closure captures a pointer to the local variable, not the value of the local variable, and thus keeps it alive. (That is, the namespace is not destroyed until all closures referencing it have gone away.) https://docs.python.org/3/faq/programming.html#why-do-lambdas-defined-in-a-loop-with-different-values-all-return-the-same-result

Yeah, closures can be a bit counter-intuitive.  Assuming *I'm* understanding this correctly, the closure captures a pointer to the local variable, not the value of the local variable, and thus keeps it alive.  (That is, the namespace is not destroyed until all closures referencing it have gone away.)

https://docs.python.org/3/faq/programming.html#why-do-lambdas-defined-in-a-loop-with-different-values-all-return-the-same-result

History
Date	User	Action	Args
2014-07-02 12:06:21	r.david.murray	set	recipients: + r.david.murray, holdenweb
2014-07-02 12:06:21	r.david.murray	set	messageid: <1404302781.63.0.588123901269.issue21904@psf.upfronthosting.co.za>
2014-07-02 12:06:21	r.david.murray	link	issue21904 messages
2014-07-02 12:06:21	r.david.murray	create