On Mar 21, 2009, at 9:06 AM, Jason Bandlow wrote:

>
> Hi all,
>
> Is the following missing coercion known?  I couldn't find anything on
> trac, but there's a lot there related to coercion, so I may have  
> missed it.
>
>       sage: a = float(1.0)
>       sage: QQ(a)
>       TypeError: Unable to coerce 1.0 (<type 'float'>) to Rational
>
> Note that the following works:
>
>       sage: a = float(1.0)
>       sage: QQ(RR(a))
>       1
>
> I'm happy to open a ticket if that's the right thing to do here.

Yes, this conversion is missing. It should be easy to implement.

- Robert



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