Re: round function error???

[Terry Reedy]

Anthony wrote:
Isn't this a mistake???

round(3499.349439034,44)
3499.3494390340002
round(_,2)
3499.3499999999999
round(_,1)
3499.4000000000001

My Python 2.5.1 spat that out..

No, round() return binary floats that, in general, cannot represent 
decimal floats exactly.  Formatted printing gives what you expect.
>>> '%8.2f' % x
' 3499.35'

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