[Python-ideas] Briefer string format

[Guido van Rossum]

Unfortunately, all spellings that require calling locals() are wrong.

On Thu, Aug 6, 2015 at 8:57 PM, David Mertz <mertz at gnosis.cx> wrote:

> I've followed all the posts in this thread, and although my particular
> opinion has little significance, I'm definitely -1 on this idea (or
> actually -1000).
>
> To my mind is that we have already gone vastly too far in proliferating
> near synonyms for templating strings.  Right now, I can type:
>
> >>> "My name is %(first)s %(last)s" % (**locals())
>
> Or:
>
> >>> "My name is {first} {last}".format(**locals())
>
> Or:
>
> >>> string.Template("My name is $first $last").substitute(**locals())
>
> And they all mean the same thing, with pretty much the same capabilities.
> I REALLY don't want a 4th or 5th way to spell the same thing... let alone
> one with weird semantics with lots of edge cases that are almost impossible
> to teach.
>
> I really DO NOT want to spell the same thing as f"..." or !"...", let
> alone have every single string magically become a runtime evaluated complex
> object like "My name is \{first}".
>
> Yes, I know the oddball edge cases each style supports are slightly
> different... but that's exactly the problem.  It's yet another thing to
> address an ever-so-slightly different case, where the actual differences
> are impossible to explain to students; and where there's frankly nothing
> you can't do with just a couple extra characters using str.format() right
> now.
>
> Yours, David...
>
>
> On Sun, Jul 19, 2015 at 4:12 PM, Mike Miller <python-ideas at mgmiller.net>
> wrote:
>
>> Have long wished python could format strings easily like bash or perl do,
>> ...
>> and then it hit me:
>>
>>     csstext += f'{nl}{selector}{space}{{{nl}'
>>
>> (This script included whitespace vars to provide a minification option.)
>>
>> I've seen others make similar suggestions, but to my knowledge they didn't
>> include this pleasing brevity aspect.
>>
>> -Mike
>>
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>
>
>
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-- 
--Guido van Rossum (python.org/~guido)
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