On 2015-08-31 9:10 AM, Nick Coghlan wrote:
On 30 August 2015 at 23:41, Eric V. Smith <e...@trueblade.com> wrote:
Note there's a companion PEP 501 which extends this idea by delaying
converting the expression into a string. This allows for more control
over how the expressions are converted in to strings, and allows for
non-string conversions as well.
For the benefit of folks that weren't following the (many) iterations
on python-ideas: PEP 501's general purpose string interpolation
started out as a competitor to 498, but as the discussion continued
and my ideas started to converge more and more with Eric's, I
eventually realised it made more sense as an optional extension to PEP
498 that exposed the inner workings of the scope aware interpolation
machinery to Python code.
If PEP 501 is an extension to PEP 498, then the proposal
is to add i'' prefix *in addition* to f'', right?
If so, I think it might be confusing to a lot of people on
what prefix should be used and when. I think it's too easy
for an average user to write ``os.system(f'...')`` and think
that their code is fine, instead of ``os.system(i'...')``.
What's worse, is that there is no way for ``os.system()``
to reject the former use.
Second, given that we use "f" for "formatted", using "i"
for "interpolated template" is a bit confusing. Can
we use "t" ("template strings")?
Yury
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