Eric V. Smith <[email protected]> added the comment:
Yes, moving f-strings to the grammar would be a huge change, and not just for
CPython.
I discussed it at the last PyCon with the authors of various editors (for
syntax highlighting) and other tools that parse python code. No one was hugely
opposed to it, and I think even one person was very excited about it. But it's
not a step to be taken lightly. I don't think I've discussed it with any other
Python implementors outside of CPython.
My biggest concern is that it makes naive string recognition fail. For example,
this would become a valid f-string:
f'{fn('some string')}'
while
'{fn('some string')}'
is not a valid string.
I now I think I've completely derailed this bug report. I think the action item
here is for me to finish up my better error reporting.
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<https://bugs.python.org/issue38964>
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