On Aug 26, 2019, at 23:43, Serhiy Storchaka <storch...@gmail.com> wrote:
>
> 27.08.19 06:38, Andrew Barnert via Python-ideas пише:
>> * JSON (register the stdlib or simplejson or ujson),
>
> What if the JSON suffix for?
I think you’d mainly want it in combination with percent-, html-, or
uu-equals-decoding, which makes it a potential stress test of the “multiple
affixes” or “affixes with modifiers” idea. Which I think is important, because
I like what the OP came up with for that idea, so I want to push it beyond just
the “regex with flags” example to see if it breaks.
Maybe URL, which often has the same html and percent encoding issues, would be
a better example? I personally don’t need to decode URLs that often in Python
(unlike in, say, ObjC, where there’s a smart URL class that you use in place of
strings all over the place), but maybe others do?
> JSON is virtually a subset of Python except that that it uses true, false and
> null instead of True, False and None.
Is it _virtually_ a subset, or literally so, modulo those three values? I don’t
know off the top of my head. Look at all the trouble caused by Crockford just
assuming that the syntax he’d defined was a strict subset of JS when actually
it isn’t quite.
Actually, now that I think of it, I do know. Python has allow_nan on by
default, so you’d need to also `from math import nan as NaN` and `from math
import inf as Infinity`. But is that it? I’m not sure.
And of course if you’ve done this:
jdec = json.JSONDecoder(parse_float=Decimal)
__register_prefix__(jdec.decode, 'j')
… then even j'1.1' and 1.1 are no longer the same values.
Not to mention what you get if you registered Pandas’s JSON reader instead of
the stdlib’s.
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