On 11 avr, 12:14, bdsatish <[EMAIL PROTECTED]> wrote: > The built-in function round( ) will always "round up", that is 1.5 is > rounded to 2.0 and 2.5 is rounded to 3.0. > > If I want to round to the nearest even, that is > > my_round(1.5) = 2 # As expected > my_round(2.5) = 2 # Not 3, which is an odd num > > I'm interested in rounding numbers of the form "x.5" depending upon > whether x is odd or even. Any idea about how to implement it ?
When you say "round to the nearest even", you mean new_round(3) <> 3? Is so, you can try: In [37]: def new_round(x): ....: return round(x/2.)*2 ....: In [38]: new_round(1.5) Out[38]: 2.0 In [39]: new_round(2.5) Out[39]: 2.0 In [40]: new_round(3) Out[40]: 4.0 -- http://mail.python.org/mailman/listinfo/python-list
