Dict handling of floats

[Grant Edwards]

In article <98imn-ust.ln1 at grendel.myth>, Jim Richardson wrote:

> I have come across a weirdness. I have a number of floats, (lat long
> pairs) which I stuff into a dict, but when I take them out, my nice %2f4
> number, (say, 47.5894) is something long and *almost* right, like
> 47.589333333333333339. What gives?

That's floats.  The best you can hope for is "almost right".  And that's
assuming your algorithm is right.  With the wrong algorithm you can easily
end up with "not at all right".

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