bpo-31708: Allow async generator expressions in synchronous functions (#3905)

1 files changed, 10 insertions, 8 deletions

diff --git a/Doc/reference/expressions.rst b/Doc/reference/expressions.rst
index 094b928..1cff8a5 100644
--- a/Doc/reference/expressions.rst
+++ b/Doc/reference/expressions.rst
@@ -326,14 +326,16 @@ range(10) for y in bar(x))``.
 The parentheses can be omitted on calls with only one argument.  See section
 :ref:`calls` for details.
 
-Since Python 3.6, if the generator appears in an :keyword:`async def` function,
-then :keyword:`async for` clauses and :keyword:`await` expressions are permitted
-as with an asynchronous comprehension.  If a generator expression
-contains either :keyword:`async for` clauses or :keyword:`await` expressions
-it is called an :dfn:`asynchronous generator expression`.
-An asynchronous generator expression yields a new asynchronous
-generator object, which is an asynchronous iterator
-(see :ref:`async-iterators`).
+If a generator expression contains either :keyword:`async for`
+clauses or :keyword:`await` expressions it is called an
+:dfn:`asynchronous generator expression`.  An asynchronous generator
+expression returns a new asynchronous generator object,
+which is an asynchronous iterator (see :ref:`async-iterators`).
+
+.. versionchanged:: 3.7
+   Prior to Python 3.7, asynchronous generator expressions could
+   only appear in :keyword:`async def` coroutines.  Starting
+   with 3.7, any function can use asynchronous generator expressions.
 
 .. _yieldexpr: