[Python-Dev] Subtle difference between f-strings and str.format()
Guido van Rossum
guido at python.org
Wed Mar 28 15:04:31 EDT 2018
Yes, #3, and what Tim says.
On Wed, Mar 28, 2018, 11:44 Serhiy Storchaka <storchaka at gmail.com> wrote:
> 28.03.18 19:20, Guido van Rossum пише:
>
> > Hm, without thinking too much about it I'd say it's okay to change the
> > evaluation order.
>
> Do you mean the option 3, right? This is the simplest option. I have
> already wrote a PR for optimizing old-style formating [1], but have not
> merged it yet due to this change of semantic.
>
> > Can these optimizations be disabled with something like -O0?
>
> Currently there is no way to disable optimizations. There is an open
> issue with a request for this. [2]
>
> [1] https://github.com/python/cpython/pull/5012
> [2] https://bugs.python.org/issue2506
>
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