[Python-Dev] Integer division operator can give float result?
Facundo Batista
facundo at taniquetil.com.ar
Wed Feb 28 13:22:36 CET 2007
Greg Ewing wrote:
> Is this intentional? I would have expected the
> // operator to always give an integer result.
>
> Python 2.3 (#1, Aug 5 2003, 15:52:30)
> [GCC 3.1 20020420 (prerelease)] on darwin
> Type "help", "copyright", "credits" or "license" for more information.
> >>> 7.0 // 2
> 3.0
>From the Language Reference:
The / (division) and // (floor division) operators yield the quotient
of their arguments. The numeric arguments are first converted to a
common type. Plain or long integer division yields an integer of the
same type; the result is that of mathematical division with the
`floor' function applied to the result.
So, first the arguments are converted to a common type, in this case
float. Then the division is made. Then the 'floor' function is applied.
Result: 3.0.
So yes, it's intentional.
Regards,
--
. Facundo
.
Blog: http://www.taniquetil.com.ar/plog/
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