From 2fab9f28f047ba5221628a592fda537c15a64b97 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Batuhan=20Ta=C5=9Fkaya?=
 <47358913+isidentical@users.noreply.github.com>
Date: Sun, 20 Oct 2019 19:46:29 +0300
Subject: [PATCH] bpo-38531: document extend action's added version

---
 Doc/library/argparse.rst | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Doc/library/argparse.rst b/Doc/library/argparse.rst
index 00115d5cd1e9bd..818acf484cdf39 100644
--- a/Doc/library/argparse.rst
+++ b/Doc/library/argparse.rst
@@ -838,6 +838,8 @@ how the command-line arguments should be handled. The supplied actions are:
     >>> parser.parse_args(["--foo", "f1", "--foo", "f2", "f3", "f4"])
     Namespace(foo=['f1', 'f2', 'f3', 'f4'])
 
+  .. versionadded:: 3.8
+
 You may also specify an arbitrary action by passing an Action subclass or
 other object that implements the same interface. The ``BooleanOptionalAction``
 is available in ``argparse`` and adds support for boolean actions such as