From 3e30af96a26116e55f74fadd4038cc1e427263cf Mon Sep 17 00:00:00 2001
From: Raymond Hettinger <raymond.hettinger@gmail.com>
Date: Wed, 28 Aug 2019 18:04:16 -0700
Subject: [PATCH] bpo-16468: Clarify which objects can be passed to "choices"
 in argparse

---
 Doc/library/argparse.rst | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/Doc/library/argparse.rst b/Doc/library/argparse.rst
index ef2fd42783c877..368b1cfebf0568 100644
--- a/Doc/library/argparse.rst
+++ b/Doc/library/argparse.rst
@@ -1102,9 +1102,8 @@ container should match the type_ specified::
    usage: doors.py [-h] {1,2,3}
    doors.py: error: argument door: invalid choice: 4 (choose from 1, 2, 3)
 
-Any object that supports the ``in`` operator can be passed as the *choices*
-value, so :class:`dict` objects, :class:`set` objects, custom containers,
-etc. are all supported.
+Any container can be passed as the *choices* value, so :class:`list` objects,
+:class:`set` objects, and custom containers are all supported.
 
 
 required