From db385229645dbaaa9863e259b2fae67b9da873fe Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Sun, 20 Oct 2019 13:25:25 -0700
Subject: bpo-38531: document extend action's added version (GH-16865)
 (GH-16868)
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(cherry picked from commit 74142078b3b78fea7b4cd791e5c577c0c0964eb7)

Co-authored-by: Batuhan Taşkaya <47358913+isidentical@users.noreply.github.com>
---
 Doc/library/argparse.rst | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Doc/library/argparse.rst b/Doc/library/argparse.rst
index ee005594..5a61a5b 100644
--- a/Doc/library/argparse.rst
+++ b/Doc/library/argparse.rst
@@ -810,6 +810,8 @@ 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 recommended way to do
 this is to extend :class:`Action`, overriding the ``__call__`` method
-- 
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