Count Down to Zero

[Christopher Browne]

In our last episode (Fri, 22 Sep 2000 13:27:46 -0700),
the artist formerly known as Curtis Jensen said:
>How come Python can't count down to zero?  Was it written by ancient
>Romans or something?
>0.2
>0.1
>1.38777878078e-16
>>>> 
>
>The last one should be 0.0

What is 0.0 in floating point?

Subtracting 0.1 from 0.2 doesn't give you exactly 0.1, and cascading
differences mean that 0.0 != 0.0...
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