----------------------------------------
> From: [email protected]
> Date: Thu, 23 May 2013 01:30:53 +0100
> Subject: Re: PEP 378: Format Specifier for Thousands Separator
> To: [email protected]
> CC: [email protected]; [email protected]
>
> On 22 May 2013 23:31, Carlos Nepomuceno <[email protected]> wrote:
>>
>> I still don't understand why % benefits from literals optimization
>> ("'%d'%12345") while '{:d}'.format(12345) doesn't.
>
> There's no reason why that optimisation can't happen in principle.
> However no one has written a patch for it. Why don't you look into
> what it would take to make it happen?
>
>
> Oscar
Maybe I'll look into that later, but I couldn't even find how the hell they
made _Py_InsertThousandsGrouping() been called.
That's what I got when analysing % formating:
Thousands separator format specifier for str.__mod__()
======================================================
@Objects/stringobject.c: implements formatint() for '%' processing
-Looking for code used in str.format()
@Objects/stringlib/formatter.h: implements str.format()
-It uses STRINGLIB_GROUPING() to do the job.
@Objects/stringlib/stringdefs.h: #define STRINGLIB_GROUPING
_PyString_InsertThousandsGrouping
@Objects/stringlib/unicodedefs.h: #define STRINGLIB_GROUPING
_PyUnicode_InsertThousandsGrouping
@Objects/stringobject.c: #define _Py_InsertThousandsGrouping
_PyString_InsertThousandsGrouping
@Objects/stringobject.h: declares _PyString_InsertThousandsGrouping()
@???: ??? _PyString_InsertThousandsGrouping ??? _Py_InsertThousandsGrouping
@Objects/stringlib/localeutil.h: implements _Py_InsertThousandsGrouping()
Let me explain what that means. I found no relating declarations/definitions
that turn _PyString_InsertThousandsGrouping into _Py_InsertThousandsGrouping.
So, I don't even know how that source code compiles without error.
:/ really strange...
Not to mention the lots of code inside header definition files! Weird!!!!
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