Dnia czwartek, 7 września 2006 14:37, Andrei napisał:
> > get me into trouble with the flakiness of float(n)? In testing I
> > didn't find any problems, but ..
>
> Nah. Float accuracy is only a problem if you need around lots of
> significant digits (16 or so).
I wouldn't bet. Such a simple thing as 0.1 can't be represented correctly on
Float... That's what 'decimal' is for.
See that:
>>> 0.1 + 0.1 + 0.1 - 0.3
5.5511151231257827e-17
>>>
>>> from decimal import Decimal
>>> Decimal("0.1")+ Decimal("0.1")+ Decimal("0.1")-Decimal("0.3")
Decimal("0.0")
>>>
For more see: http://docs.python.org/lib/module-decimal.html
--
Pawel Kraszewski
http://www.kraszewscy.net
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