Re: money field question

On 29/05/2018 10:10 PM, Melvyn Sopacua wrote:
>
> On dinsdag 29 mei 2018 11:03:56 CEST Mike Dewhirst wrote:
>
> > Also, despite using decimal.Decimal under the covers it wants its money
>
> > as strings.
>
> >
>
> > Python 3.6.3
>
> >
>
> > >>> from money import money
>
> > >>> print(money.Money(23.45, 'AUD'))
>
> >
>
> > AUD 23.449999999999999289457264239899814128875732421875
>
> >
>
> > >>> print(money.Money('23.45', 'AUD'))
>
> >
>
> > AUD 23.45
>
> No, that's decimal.Decimal and floats being an approximation:
>
> >>> from decimal import Decimal >>> Decimal('23.45') Decimal('23.45') >>> Decimal(23.45)
> Decimal('23.449999999999999289457264239899814128875732421875')
>
> >>> print('{:.48f}'.format(23.45)) 23.449999999999999289457264239899814128875732421875 >>>
> print('{:.55f}'.format(23.45))
> 23.4499999999999992894572642398998141288757324218750000000
>
> So decimal.Decimal's constructor converts strings to decimal numbers
> with as much precision as given. It also applies to floats, except
> that floats have more precision then typed.
>

I get it :)

Thanks (again!)

Mike

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>
> Melvyn Sopacua
>
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