March 21, 2010
1:10 a.m.
Greg Ewing wrote:
Antoine Pitrou wrote:
We forbid comparisons when there is a real danger or ambiguity, such as unicode vs. bytes. There is no such danger or ambiguity when comparing a decimal with a float.
So do you think that float("0.1") and Decimal("0.1") should be equal or not, and why?
Note that Antoine's point was that float("0.1") and Decimal.from_float(0.1) should compare equal. The latter exactly matches the underlying binary floating point value:
dec.from_float(0.1) Decimal('0.1000000000000000055511151231257827021181583404541015625')
Cheers, Nick. -- Nick Coghlan | ncoghlan@gmail.com | Brisbane, Australia ---------------------------------------------------------------