[Python-Dev] Subtle difference between f-strings and str.format()
Serhiy Storchaka
storchaka at gmail.com
Wed Mar 28 14:44:18 EDT 2018
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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