Code:
>>> a = 51.1 + 2.1 >>> print a 53.2
Mazdak
Last Activity: Jul 22 '08, 09:03 AM
Joined: Jul 16 '08
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The Decimal module returns the whole instance instead of extracting the value I want. I spoke with some proffessionals and they gave a bit of a lecture. All programming languages have this float-issue, it's just that they present it better than Python. Now if you type:
Dunno if this is correct but Python "hides" away... -
A quicky note for those that totally lost faith in the float datatype: Python is still able to represent decimals in the base of 2, for example 51.5.. 51,25 and 51.125.
Hopefully we'll see a future Python with the same easy goin' way and no float issues. Huzzah for that! =DLeave a comment:
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Currently using Python 2.5 or 2.5.1, don't know which one =/. Do you know perhaps if there's a new version releasing anytime soon?
:: At the code block above I suddenly started to use a variable named 'ras', thats a minor error and should be 'range' instead ::...Leave a comment:
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Oh yeah, that dirty trick really sounds good. The problem is that Python really doesnt like rounding when you have the floating point issue:
...Code:from decimal import * >>> range = Decimal("-65.0") >>> range = range + 0.1 >>> range -64.90000000000006 >>>str(range) '-64.9' >>> float(ras) -64.900000000000006Leave a comment:
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Decimal issues
Hey guys!
I recently bumped into a problem when I was calculating with simple additions. I had declared a variable eariler that we'll name "range" here.
In a loop range was added "+1". If a certain value was reached ( another variable ) then range was added with "+0.1" instead. Now this is where the issue occured.
The problem was identified as a "floating point issue" through several...
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