[Python-Dev] Integer division operator can give float result? (original) (raw)

Guido van Rossum guido at python.org
Wed Feb 28 22:44:55 CET 2007

Also consider this example:

7.2 // 0.5 14.0

On 2/28/07, Facundo Batista <facundo at taniquetil.com.ar> wrote: 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/ PyAr: http://www.python.org/ar/

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-- --Guido van Rossum (home page: http://www.python.org/~guido/)

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