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[Python-Dev] PEP 515: Underscores in Numeric Literals

Georg Brandl g.brandl at gmx.net
Thu Feb 11 11:57:56 EST 2016 
On 02/11/2016 05:52 PM, Steve Dower wrote:
> On 11Feb2016 0651, Barry Warsaw wrote:
>> On Feb 11, 2016, at 09:22 AM, Georg Brandl wrote:
>>
>>> based on the feedback so far, I revised the PEP.  There is now
>>> a much simpler rule for allowed underscores, with no exceptions.
>>> This made the grammar simpler as well.
>>
>> I'd be +1, but there's something missing from the PEP: what the underscores
>> *mean*.  You describe the syntax nicely, but not the semantics.
>>
>>  From reading the examples, I'd guess that the underscores are semantically
>> transparent, meaning that the resulting value is the same if you just removed
>> the underscores and interpreted the resulting literal.
>>
>> Right or wrong, could you please add a paragraph explaining the meaning of the
>> underscores?
> 
> Glad I kept reading the thread this far - just pretend I also wrote 
> exactly the same thing as Barry.

D'oh :)  I added (hopefully) clarifying wording.

Thanks,
Georg
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