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bpo-27646: Say that 'yield from' expression can be any iterable (GH-24595) 

Previously, the doc at least strongly implied that it had to be an iterator.
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Terry Jan Reedy 2021-02-20 21:33:25 -05:00 committed by GitHub
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Doc/reference/expressions.rst
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@ -478,8 +478,8 @@ allowing any pending :keyword:`finally` clauses to execute.
.. index::
single: from; yield from expression
When ``yield from <expr>`` is used, it treats the supplied expression as
a subiterator. All values produced by that subiterator are passed directly
When ``yield from <expr>`` is used, the supplied expression must be an
iterable. The values produced by iterating that iterable are passed directly
to the caller of the current generator's methods. Any values passed in with
:meth:`~generator.send` and any exceptions passed in with
:meth:`~generator.throw` are passed to the underlying iterator if it has the

2
Misc/NEWS.d/next/Documentation/2021-02-20-00-09-13.bpo-27646.HRsmo-.rst Normal file
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@ -0,0 +1,2 @@
Clarify that 'yield from <expr>' works with any iterable, not just
iterators.