Message 64034 - Python tracker
To my mind, the inaccurate result is a bug that should be fixed. Note: (3.0a3) >>> 10e40/10e39 10.0 The rationale for the division change is that (as far as reasonably possible) arithmetic operations with same values should give same result regardless of types. I have not looked at either algorithm, but if long/long started by finding divmod(), but added fractional value when remainer is non-zero instead of tossing it, exact quotients would easily be exact (unless too large).