typing docs: Add example for async functions (GH-20386)

Fixes python/typingGH-424 (cherry picked from commit 9588f88) Co-authored-by: Sam Bull <[email protected]>
jessecomeau87 · May 1, 2022 · 508f13a · 508f13a
1 parent cef3a99
commit 508f13a
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/Doc/library/typing.rst b/Doc/library/typing.rst
@@ -194,6 +194,10 @@ For example::
                    on_error: Callable[[int, Exception], None]) -> None:
        # Body
 
+   async def on_update(value: str) -> None:
+       # Body
+   callback: Callable[[str], Awaitable[None]] = on_update
+
 It is possible to declare the return type of a callable without specifying
 the call signature by substituting a literal ellipsis
 for the list of arguments in the type hint: ``Callable[..., ReturnType]``.