Message 58269 - Python tracker

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Author	amaury.forgeotdarc
Recipients	amaury.forgeotdarc, shlomoa
Date	2007-12-07.10:13:47
SpamBayes Score	0.020389875
Marked as misclassified	No
Message-id	<1197022428.03.0.981209687631.issue1565@psf.upfronthosting.co.za>
In-reply-to

Content
Your function is not better: >>> print my_round(s,2) 1.41 >>> my_round(s,2) 1.4099999999999999 print uses str(), and restricts itself to 12 significant digits. the direct call uses repr(), and display the most precise number. The problem is not in the computation, but is inherent to the 'float' type which cannot represent 1.41 exactly. Please carefully read the faq entry above.

Your function is not better:

>>> print my_round(s,2)
1.41
>>> my_round(s,2)
1.4099999999999999

print uses str(), and restricts itself to 12 significant digits.
the direct call uses repr(), and display the most precise number.

The problem is not in the computation, but is inherent to the 'float'
type which cannot represent 1.41 exactly. Please carefully read the faq
entry above.

History
Date	User	Action	Args
2007-12-07 10:13:48	amaury.forgeotdarc	set	spambayes_score: 0.0203899 -> 0.020389875 recipients: + amaury.forgeotdarc, shlomoa
2007-12-07 10:13:48	amaury.forgeotdarc	set	spambayes_score: 0.0203899 -> 0.0203899 messageid: <1197022428.03.0.981209687631.issue1565@psf.upfronthosting.co.za>
2007-12-07 10:13:48	amaury.forgeotdarc	link	issue1565 messages
2007-12-07 10:13:47	amaury.forgeotdarc	create