[Python-Dev] Mixing float and Decimal -- thread reboot

Mark Dickinson dickinsm at gmail.com
Mon Mar 22 21:49:06 CET 2010

On Mon, Mar 22, 2010 at 8:44 PM, Guido van Rossum <guido at python.org> wrote:
> On Mon, Mar 22, 2010 at 12:33 PM, Raymond Hettinger
> <raymond.hettinger at gmail.com> wrote:
>> While we're on the topic, I think you should consider allowing the Fraction()
>> constructor to accept a decimal input.
>> This corresponds to common schoolbook problems and simple client requests:
>>   "Express 3.5 as a fraction".
>>    >>> Fraction(Decimal('3.5'))
>>   Fraction(7, 2)
> There is already a Fraction.from_decimal() class method.

So there is;  I'd failed to notice that!  So decimal -> fraction
conversion is implemented twice in the Fractions module---once in
__new__ and once in from_decimal.  Hmm.


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