Terry J. Reedy added the comment:
Much of this discussion seems to duplicate and effectively re-open of #25179,
wherein it was decided/accepted that true, non-degenerate, non-trivial,
non-constant, f-strings that actually do formatting are not constants and do
not and should not become docstrings. I agree. I think this issue should
either be closed as 'not a bug' or redefined as a doc issue.
It was noted by Martin P. in #25179 that "a constant f-string without any
interpolations does become a doc string." That is because such is really a
string literal and not really an f-string, in the same sense that 'circle of
radius 0' is really a point and not a circle.
The current glossary entry is
"docstring
A string literal which appears as the first expression in a class, function
or module. While ignored when the suite is executed, it is recognized by the
compiler and put into the __doc__ attribute of the enclosing class, function or
module. Since it is available via introspection, it is the canonical place for
documentation of the object."
I suggest adding "Bytestring literals and non-trivial f-strings do not become
docstrings." as the second sentence.
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nosy: +terry.reedy
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<http://bugs.python.org/issue28739>
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