Re: [Python-Dev] Parsing f-strings from PEP 498 -- Literal String Interpolation

On 11/9/2016 11:35 AM, Paul Moore wrote:

On 9 November 2016 at 16:20, Fabio Zadrozny wrote:

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Also, as a feedback, I found it a bit odd that there can't be any space nor new line between the last format specifiers and '}'

FWIW, that is the case for normal format strings, as well:

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print("{!r\n}".format(12)) Traceback (most recent call last): File "<stdin>", line 1, in <module> ValueError: expected ':' after conversion specifier

I guess the behaviour is simply inherited from there.

Right. That and the fact that whitespace is significant inside the format specifier portion:

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'{:%H:%M:%S\n}'.format(datetime.datetime.now()) '17:14:10\n'

I don't think it's worth changing this to allow whitespace after the optional one-character conversion flag. Eric.