[Python-Dev] Caching float(0.0)

[Bob Ippolito]

On 9/30/06, Terry Reedy <tjreedy at udel.edu> wrote:
>
> "Nick Coghlan" <ncoghlan at gmail.com> wrote in message
> news:451E31ED.7030905 at gmail.com...
> >I suspect the problem would typically stem from floating point values that
> >are
> >read in from a human-readable file rather than being the result of a
> >'calculation' as such:
>
> For such situations, one could create a translation dict for both common
> float values and for non-numeric missing value indicators.  For instance,
> flotran = {'*': None, '1.0':1.0, '2.0':2.0, '4.0':4.0}
> The details, of course, depend on the specific case.

But of course you have to know that common float values are never
cached and that it may cause you problems. Some users may expect them
to be because common strings and integers are cached.

-bob