[Python-Dev] PEP 515: Underscores in Numeric Literals (revision 3)

Georg Brandl g.brandl at gmx.net
Sat Feb 13 06:22:42 EST 2016


On 02/13/2016 12:10 PM, Serhiy Storchaka wrote:
> On 13.02.16 10:48, Georg Brandl wrote:
>> Following the same rules for placement, underscores will be allowed in
>> the following constructors:
>>
>> - ``int()`` (with any base)
>> - ``float()``
>> - ``complex()``
>> - ``Decimal()``
> 
> What about float.fromhex()? Should underscores be allowed in it (I think 
> no)?

Good question.  It *does* accept a "0x" prefix, as does ``int(x, 16)``, so
there is some precedent for literal-like interpretation of the input here
as well.

Georg




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