Guido van Rossum <[email protected]> added the comment:
So shouldn't we just rule out some specific bits of syntax in annotations? That
can be done after the PEG grammar has accepted them, otherwise we'd end up
having a whole new expression-like grammar section that excludes them. I think
this is the list we should exclude, right?
- yield [from]
- walrus
- await (?)
I agree await technically doesn't need to be in this list, so maybe we
shouldn't explicitly exclude it -- it's no different than writing
def f(x: open(filename).read()):
...
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<https://bugs.python.org/issue42725>
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