On 7/12/2010 2:52 AM Robin Becker said... <snip>
What value should round(-9.85,1) return?
Per round's definition, -9.9. String interpolation for %n.mf doesn't appear to define it's rounding behavior, so a peek at the source would answer what's being done.
It does look inconsistent however, and it seems to me rounding and interpolation should behave similarly. So I'd call it a bug.
Emile >>> def display(val): ... print "%.1f" % val ... print round(val,1) ... >>> display(1.45) 1.5 1.5 >>> display(-1.45) -1.5 -1.5 >>> display(-1.85) -1.9 -1.9 >>> display(1.85) 1.9 1.9 >>> display(-7.85) -7.8 -7.9 >>> display(-9.85) -9.8 -9.9 >>> -- http://mail.python.org/mailman/listinfo/python-list
