asyncio.docs: Document Transport.is_closing

diff --git a/Doc/library/asyncio-protocol.rst b/Doc/library/asyncio-protocol.rst
index e714488eaf71bfe548c246075421fbccb49161f1..9350ffedeb7edda3e519c4b7601aa72b71e8f7d9 100644 (file)
--- a/Doc/library/asyncio-protocol.rst
+++ b/Doc/library/asyncio-protocol.rst
@@ -41,6 +41,11 @@ BaseTransport
       protocol's :meth:`connection_lost` method will be called with
       :const:`None` as its argument.
 
+   .. method:: is_closing(self)
+
+      Return ``True`` if the transport is closing or is closed.
+
+      .. versionadded:: 3.4.4
 
    .. method:: get_extra_info(name, default=None)