Serhiy Storchaka added the comment:
Adding more confusion, the expression ``('This is a docstring')`` is accepted
as a docstring despite the fact that it is not a string literal.
The cases f'string' and ('string') looks similar to me. Both are simple
expressions that become indistinguishable from string literals due to some
optimization at parser level. It would be nice to disallow them as docstrings,
but it may be not easy to do.
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nosy: +serhiy.storchaka
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue28739>
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