Message 272064 - Python tracker

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Author	ammar2
Recipients	ammar2, nathan snobelen
Date	2016-08-05.22:03:24
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1470434604.46.0.70016127609.issue27697@psf.upfronthosting.co.za>
In-reply-to

Content
You've ran into a classic floating point number limitation. Please read the following doc page: https://docs.python.org/2/tutorial/floatingpoint.html The problem comes when you multiply the number by 100, which is what causes the precision loss and drops it by a penny. >>> 1108431.38 * 100 110843137.99999999 >>> int(110843137.99999999) 110843137 If this is for currency, I would suggest you use the decimal module https://docs.python.org/2/library/decimal.html

You've ran into a classic floating point number limitation. 
Please read the following doc page: https://docs.python.org/2/tutorial/floatingpoint.html

The problem comes when you multiply the number by 100, which is what causes the precision loss and drops it by a penny.

>>> 1108431.38 * 100
110843137.99999999
>>> int(110843137.99999999)
110843137

If this is for currency, I would suggest you use the decimal module https://docs.python.org/2/library/decimal.html

History
Date	User	Action	Args
2016-08-05 22:03:24	ammar2	set	recipients: + ammar2, nathan snobelen
2016-08-05 22:03:24	ammar2	set	messageid: <1470434604.46.0.70016127609.issue27697@psf.upfronthosting.co.za>
2016-08-05 22:03:24	ammar2	link	issue27697 messages
2016-08-05 22:03:24	ammar2	create