Message 274212 - Python tracker

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In-reply-to
Author	mark.dickinson
Recipients	Jonatan Skogsfors, mark.dickinson, rhettinger
Date	2016年09月02日.08:50:47
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1472806247.48.0.453389442443.issue27936@psf.upfronthosting.co.za>

Content
> I think the round() function should explicitly check for None and replace it with zero That would be a change in behaviour: `round(x)` is not the same as `round(x, 0)`. For most types, `round(x)` returns an `int`, while `round(x, 0)` returns something of the same type as `x`. Instead, I think we should add the check for `None` to `int`s `__round__` implementation. >>> round(1.3, 0) 1.0 >>> round(1.3) 1 >>> round(1.3, None) 1

Content

> I think the round() function should explicitly check for None and replace it with zero
That would be a change in behaviour: `round(x)` is not the same as `round(x, 0)`. For most types, `round(x)` returns an `int`, while `round(x, 0)` returns something of the same type as `x`. Instead, I think we should add the check for `None` to `int`s `__round__` implementation.
>>> round(1.3, 0)
1.0
>>> round(1.3)
1
>>> round(1.3, None)
1

History
Date	User	Action	Args
2016年09月02日 08:50:47	mark.dickinson	set	recipients: + mark.dickinson, rhettinger, Jonatan Skogsfors
2016年09月02日 08:50:47	mark.dickinson	set	messageid: <1472806247.48.0.453389442443.issue27936@psf.upfronthosting.co.za>
2016年09月02日 08:50:47	mark.dickinson	link	issue27936 messages
2016年09月02日 08:50:47	mark.dickinson	create

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