Jeremy Sanders wrote: > Nils Grimsmo wrote: > >>Why did round() change in Python 2.4? > > It the usual floating point representation problem. 0.0225 cannot be > represented exactly:
That's not what he's asking about. He's asking why his Python 2.3 rounds 0.0225 *up* to 0.023 while his Python 2.4 rounds *down* to 0.022. It's the change in behavior that he's concerned with and isn't just the usual floating point problem. I'm going to suggest that it's a platform issue, possibly the change in compiler. I get identical results on OS X with both versions of Python both compiled by gcc-3.3 . [~]$ python2.3 Python 2.3.5 (#1, Mar 20 2005, 20:38:20) [GCC 3.3 20030304 (Apple Computer, Inc. build 1809)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> 0.0225 0.022499999999999999 >>> round(0.0225, 3) 0.023 >>> [~]$ python2.4 Python 2.4.1 (#2, Mar 31 2005, 00:05:10) [GCC 3.3 20030304 (Apple Computer, Inc. build 1666)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> 0.0225 0.022499999999999999 >>> round(0.0225, 3) 0.023 >>> -- Robert Kern [EMAIL PROTECTED] "In the fields of hell where the grass grows high Are the graves of dreams allowed to die." -- Richard Harter -- http://mail.python.org/mailman/listinfo/python-list
