python decimals

Andrew Svetlov andrew.svetlov at
Wed Sep 16 02:35:59 CEST 2009

It only reflects the fact what comp.lang.python replicated by several
web sites.
Unfortunately looks like there are no link to library implements that :

On Sep 15, 5:17 pm, Terry Reedy <tjre... at> wrote:
> Mark Dickinson wrote:
> > On Sep 15, 2:27 am, Andrew Svetlov <andrew.svet... at> wrote:
> >> Is there some kind of python binding for decNumber library?
> >> Standard decimal.Decimal is good enough, but very slow.
> >> My current project toughly coupled with 'currency' operations and we
> >> have performance problems related to decimal calculations.
> >> From my perspective decNumber is fast and has well wide domain to
> >> represent and process all required set of numbers - we don't need to
> >> work with 'almost infinite numbers' as python decimal can.
> >> I tried to google for desired binding - but found nothing.
> >> gmpy is interesting project, but supported types is not exactly what
> >> we need - rationals and big floats is not decimals in fixed point
> >> notation.
> >> My team discussed about making own python binding of decNumber - but
> >> before we start this task I like to ask python community: is there
> >> existing implementation? I don't want to invent the wheel again.
> Searching "Python decNumber binding" puts your query, from various
> sources, in several of the top 10 sports ;-) Did not seen anythng in the
> next 20 either.
> > As far as I know, no such bindings exist.  There have been various
> > efforts to rewrite the decimal module in C, but (again as far as I
> > know) none of those efforts have come to fruition yet.

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