Builtin Float Epsilon? (was: Re: Does python suck or I am just stupid? )

[Erik Max Francis]

Jonathan McLin wrote:

> another dynamic language I've used provides the '~=' operator
> precisely for
> this purpose (pun intended).
> 
> So with real numbers, you use 'if u~=v:'
> 
> PEP?  'a ~= b' operator equivalent to 'a-epsilon <= b <= a+epsilon'

An obvious problem with the idea is that ~ is an entirely unrelated
operator.  Given that Python 2.x supports augmented assignment, this is
undoubtedly going to cause some confusion (even though ~ is a unary
operator and thus there is no augmented ~= assignment operator).

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