Message 279413 - Python tracker

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Author	tim.peters
Recipients	Jáchym Barvínek, tim.peters
Date	2016-10-25.15:18:41
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1477408721.3.0.556885224637.issue28529@psf.upfronthosting.co.za>
In-reply-to

Content
This won't be changed - it's a near-universally mandated behavior across relevant standards. Many years ago it wasn't, but Knuth changed minds when he wrote: """ We must define x^0=1 for all x, if the binomial theorem is to be valid when x=0 , y=0 , and/or x=-y . The theorem is too important to be arbitrarily restricted! """ More here: https://www.quora.com/Why-does-Python-return-1-for-pow-0-0-which-is-mathematically-wrong

This won't be changed - it's a near-universally mandated behavior across relevant standards.  Many years ago it wasn't, but Knuth changed minds when he wrote:

"""
We must define x^0=1 for all x, if the binomial theorem is to be valid when x=0 , y=0 , and/or x=-y . The theorem is too important to be arbitrarily restricted!
"""

More here:

https://www.quora.com/Why-does-Python-return-1-for-pow-0-0-which-is-mathematically-wrong

History
Date	User	Action	Args
2016-10-25 15:18:41	tim.peters	set	recipients: + tim.peters, Jáchym Barvínek
2016-10-25 15:18:41	tim.peters	set	messageid: <1477408721.3.0.556885224637.issue28529@psf.upfronthosting.co.za>
2016-10-25 15:18:41	tim.peters	link	issue28529 messages
2016-10-25 15:18:41	tim.peters	create