[Tutor] Rounding Error
Michael Lewis
mjolewis at gmail.com
Sat Jan 28 07:01:34 CET 2012
Update
I am trying to round a float to two decimals.
>
> Basically, I am writing a program to ask a user how many square feet they
> need to paint. I then calculate how many cans of paint they need and will
> also show the total purchase price. I've tried this two ways, and both ways
> I am semi-successful meaning that my output is rounding but it displays a
> number of zero's after the number rounds. How can I make the zero's stop
> displaying?
>
> total = PRICE_PER_CAN * cans + (PRICE_PER_CAN * cans * TAX)
> total = round(total,2)
> print 'For %d square feet, you\'ll need %d cans of paint.'
> %(square_feet, cans)
> print 'That will cost you $%f.' %(total)
>
>
>
> total = PRICE_PER_CAN * cans + (PRICE_PER_CAN * cans * TAX)
> print 'For %d square feet, you\'ll need %d cans of paint.'
> %(square_feet, cans)
> print 'That will cost you $%f.' %round(total,2)
>
>
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