Message 263112 - Python tracker

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Author	ned.deily
Recipients	Steven Reed, ned.deily
Date	2016-04-09.20:28:54
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1460233734.39.0.631652399693.issue26725@psf.upfronthosting.co.za>
In-reply-to

Content
This is behaving as expected. In Python 3, map() returns an iterator, so the first list(x) exhausts that iterator so that the second list(x) returns an empty list. This is a difference from Python 2 where map() returns a list. See: https://docs.python.org/3.5/whatsnew/3.0.html#views-and-iterators-instead-of-lists https://docs.python.org/3/library/functions.html#map

This is behaving as expected.  In Python 3, map() returns an iterator, so the first list(x) exhausts that iterator so that the second list(x) returns an empty list.  This is a difference from Python 2 where map() returns a list.  See:

https://docs.python.org/3.5/whatsnew/3.0.html#views-and-iterators-instead-of-lists
https://docs.python.org/3/library/functions.html#map

History
Date	User	Action	Args
2016-04-09 20:28:54	ned.deily	set	recipients: + ned.deily, Steven Reed
2016-04-09 20:28:54	ned.deily	set	messageid: <1460233734.39.0.631652399693.issue26725@psf.upfronthosting.co.za>
2016-04-09 20:28:54	ned.deily	link	issue26725 messages
2016-04-09 20:28:54	ned.deily	create