Binary Decimals in Python

aditya bluemangroupie at gmail.com
Tue Mar 30 17:56:26 CEST 2010


On Mar 30, 10:49 am, Raymond Hettinger <pyt... at rcn.com> wrote:
> On Mar 30, 8:13 am, aditya <bluemangrou... at gmail.com> wrote:
>
> > To get the decimal representation of a binary number, I can just do
> > this:
>
> > int('11',2) # returns 3
>
> > But decimal binary numbers throw a ValueError:
>
> > int('1.1',2) # should return 1.5, throws error instead.
>
> > Is this by design? It seems to me that this is not the correct
> > behavior.
>
> The int() constructor returns integers.
> So, look to float() for non-integral values.
> Binary representation isn't supported yet,
> but we do have hex:
>
>     >>> float.fromhex('1.8')
>     1.5
>
> Raymond

That looks very elegant, thanks!



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