On Thu, Sep 21, 2017 at 7:57 PM, David Mertz <mertz@gnosis.cx> wrote:
I think you are missing the point I was assuming at. Having a binary/hex float literal would tempt users to think "I know EXACTLY what number I'm spelling this way"... where most users definitely don't in edge cases.

That problem has never stopped us from using decimals. :-)
Spelling it float.fromhex(s) makes it more obvious "this is an expert operation I may not understand the intricacies of."

I don't see why that would be more obvious than if it were built into the language -- just because something is a function doesn't mean it's an expert operation.

--Guido van Rossum (python.org/~guido)