Sean Perry said unto the world upon 2005-03-29 03:48:
Kent Johnson wrote:
Not without using round. Have *NO* faith in floating points. This is especially true when you are creating the decimals via division and the like.
Can you be more specific about what kinds of problems you have had?
sure, what is 2/3? 0.66? 0.67?
>>> 2/3 0 >>> 2.0/3 0.66666666666666663
or even: Python 2.4.1c2 (#64, Mar 17 2005, 11:11:23) [MSC v.1310 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> 2/3 0 >>> from __future__ import division >>> 2/3 0.66666666666666663 >>> 2//3 0
There are definitely some gotchas you should be aware of when using floats. They are well-understood and fairly simple to work around. You have to understand the limitations. But to avoid floats entirely seems a bit extreme to me.
Kent
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