Mark Dickinson <dicki...@gmail.com> added the comment:
Which part of the behaviour do you think is a bug?
In version1, you want to think of the yield expression as though it were
bracketed like this:
result = yield (a+100 if b>100 else (yield a))
With the particular values of a and b that you have, that statement is
equivalent to this:
result = yield (yield 0)
This yields two values to the consumer: a `0` from the inner yield, followed by
a None (or whatever was "sent" into the generator, if applicable) for the out
yield.
In version 2, the corresponding line simplifies to just
result = yield 0
So no, I don't think these two versions of the code should behave the same, and
I don't think there's any bug here.
----------
nosy: +mark.dickinson
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue40354>
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