floating point glitch

[Peter Hansen]

Michael Hoffman wrote:
> Tim Roberts wrote:
> 
>> Right!  That's the point.  str() is the perfect solution in those cases
>> where you want the language to lie to you.  In many cases, that IS 
>> what you
>> want.  repr() is the perfect solution when you need an invertible 
>> function.
> 
> repr() does not provide an invertible function if you are using it on a 
> list, as was pointed out here, since list.__repr__() essentially calls 
> str() for its float members rather than repr().

It does?

 >>> [0.66]
[0.66000000000000003]
 >>> repr([0.66])
[0.66000000000000003]'
 >>> str([0.66])
[0.66000000000000003]'
 >>> str(0.66)
'0.66'
 >>> repr(0.66)
'0.66000000000000003'


-Peter