[BangPypers] A link I found today

[Rajeev J Sebastian]

On Mon, Oct 12, 2009 at 4:02 PM, Anand Balachandran Pillai
<abpillai at gmail.com> wrote:
>
>
> On Mon, Oct 12, 2009 at 3:47 PM, Anand Chitipothu <anandology at gmail.com>
> wrote:
>>
>> On Mon, Oct 12, 2009 at 2:42 PM, Baiju Muthukadan <baiju at muthukadan.net>
>> wrote:
>> > http://bitcheese.net/wiki/nopython
>> >
>> > Don't start a flame war now, please ;)
>>
>> 2.3 - 3.4 and 2/3.0 in Python, Ruby and Haskell interpreters.
>>
>> $ python3.0
>> Python 3.0.1 (r301:69597, Feb 14 2009, 19:03:52)
>> [GCC 4.0.1 (Apple Inc. build 5490)] on darwin
>> Type "help", "copyright", "credits" or "license" for more information.
>> >>> 2.3 - 3.4
>> -1.1000000000000001
>> >>> 2/3.0
>> 0.66666666666666663
>>
>> $ irb
>> >> 2.3 - 3.4
>> => -1.1
>> >> 2/3.0
>> => 0.666666666666667
>> >> ^D
>>
>> $ ghci
>> GHCi, version 6.8.2: http://www.haskell.org/ghc/  :? for help
>> Loading package base ... linking ... done.
>> Prelude> 2.3 - 3.4
>> -1.1
>> Prelude> 2/3.0
>> 0.6666666666666666
>> Prelude> Leaving GHCi.
>>
>> It looks like number of decimal digits printed are 17 in Python, 16 in
>> Haskell and 15 in Ruby.
>>
>> Is there any way to change that behavior in Python?
>
>  Not in the interpreter AFAIK. In code, use Decimal type.
>
> import decimal
>  >>> x=decimal.Decimal('2.3')
>>>> y=decimal.Decimal('3.4')
>>>> x-y
> Decimal("-1.1")
>
> I am not however a fan of the decimal module since it uses strings as the
> base type.

What else should it use then ?

Regards
Rajeev J Sebastian