Round a decimal number

[Erik Max Francis]

Skip Montanaro wrote:

> Many people find the builtin round() function useful for this:
> 
>     >>> round(1.4463784692425, 2)
>     1.45

Note that's likely to cause some confusion:

>>> round(14.69372973975, 1)
14.699999999999999

Usually when one talks about rounding a floating point number, one wants
to do it for display.  So using the round function may not really be
what one wants; instead one should convert it for display:

>>> '%.1f' % 14.69372973975    
'14.7'

-- 
   Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
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