tiissa wrote:
> Steffen Glückselig wrote:
>
>>>>> 1.0 + 3.0 + 4.6
>> 8.5999999999999996
>>
>> Ehm, how could I get the intuitively 'correct' result of - say - 8.6?
>> ;-)
>
> You may find annex B of the python tutorial an interesting read:
> http://docs.python.org/tut/node16.html
Yes, the simplest way to get what you are expecting is probably:
py> print 1.0 + 3.0 + 4.6
8.6
The print statement calls str() instead of repr(). In many (most?)
cases, this will print out what you expect it to. But you should be
aware of floating-point representation issues, and you should definitely
read the reference above. If you really do need precise decimal
representation, you can use the 2.4 decimal.Decimal objects:
py> d.Decimal("1.0") + d.Decimal("3.0") + d.Decimal("4.6")
Decimal("8.6")
But if you just want a handy calculator, I'd go with print.
STeVe
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