Also, just to be clear: I'd suggest floats because decimal requires importing a module and using the non-built-in features thereof, especially if you're going to do something like decimal.getcontext().prec (even that doesn't set precision AFTER the decimal point... only total precision). My point being that I don't see the value of sending a beginner into that morass. I actually still can't find how to force decimal to round to 3 places after the decimal... (actually, I can't find a single reference to .prec except in examples in the standard library doc of decimal http://docs.python.org/3.3/library/decimal.html#decimal.getcontext)
And finally: when I said "watch out for rounding", I meant be prepared for it. It is correct that rounding happens (otherwise the Snopes Salami scam happens), and I can't imagine that at the level at which the OP is working, any subtle control over rounding will be important (i.e. ROUNDING_CEILING or any such thing). Keith _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
