On Thu, 24 Jun 2021 at 17:37, Martin (gzlist) <gzl...@googlemail.com> wrote:
>
> >>> d = dict(a=1)
> >>> f'{d["a"]}'
> '1'
> >>> str(DelayedFString('{d["a"]}'))
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "<stdin>", line 5, in __str__
> KeyError: '"a"'
And the other side of the attribute lookup:
>>> d = dict(a=1)
>>> str(DelayedFString('{d[a]}'))
'1'
>>> f'{d[a]}'
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'a' is not defined
Yes, having three different ways of doing string interpolation (not
counting other things you can import, like string.Template) is a bit
confusing.
Martin
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