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Other Language Changes
======================
+* An :keyword:`await` expression and comprehensions containing an
+ :keyword:`async for` clause were illegal in the expressions in
+ :ref:`formatted string literals <f-strings>` due to a problem with the
+ implementation. In Python 3.7 this restriction was lifted.
+
* More than 255 arguments can now be passed to a function, and a function can
now have more than 255 parameters. (Contributed by Serhiy Storchaka in
:issue:`12844` and :issue:`18896`.)