Message 411227 - Python tracker

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Author	steven.daprano
Recipients	Spencer Brown, adam.ulrich, steven.daprano
Date	2022-01-22.03:29:09
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1642822149.82.0.31984117021.issue46467@roundup.psfhosted.org>
In-reply-to

Content
As documented, this is not a bug. "if two multiples are equally close, rounding is done toward the even choice" https://docs.python.org/3/library/functions.html#round This is also called "Banker's Rounding" or "Round half to even" and for rounding many values, it minimizes the expected total rounding error. https://en.wikipedia.org/wiki/Rounding#Round_half_to_even

As documented, this is not a bug.

"if two multiples are equally close, rounding is done toward the even choice"

https://docs.python.org/3/library/functions.html#round

This is also called "Banker's Rounding" or "Round half to even" and for rounding many values, it minimizes the expected total rounding error.

https://en.wikipedia.org/wiki/Rounding#Round_half_to_even

History
Date	User	Action	Args
2022-01-22 03:29:09	steven.daprano	set	recipients: + steven.daprano, Spencer Brown, adam.ulrich
2022-01-22 03:29:09	steven.daprano	set	messageid: <1642822149.82.0.31984117021.issue46467@roundup.psfhosted.org>
2022-01-22 03:29:09	steven.daprano	link	issue46467 messages
2022-01-22 03:29:09	steven.daprano	create