This math scares me

[Werner Schiendl]

> In fiancial calculations you also need to represent numbers
> that aren't amounts of money.  Interest rates for example.
>

How about 1/100 of a percent?
So you can stay with integer arithmetics, especially if you consider pythons
'unlimited' long

If 0.01 % does not suffice in precision, you can store it as 0.0001 % units
(say, store 1.0625% as 10625, no comma whatsoever)

regards
werner