From ef8abfc082daeb6e389dff8859640ed87da0cc12 Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Sat, 14 Jun 2014 18:51:34 -0700
Subject: [PATCH] document IOBase.__del__'s behavior (closes #21764)

Patch from Nikolaus Rath.
---
 Doc/library/io.rst | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Doc/library/io.rst b/Doc/library/io.rst
index 79f65e0007..0c7d3c7f6b 100644
--- a/Doc/library/io.rst
+++ b/Doc/library/io.rst
@@ -353,6 +353,12 @@ I/O Base Classes
       is usual for each of the lines provided to have a line separator at the
       end.
 
+   .. method:: __del__()
+
+      Prepare for object destruction. :class:`IOBase` provides a default
+      implementation of this method that calls the instance's
+      :meth:`~IOBase.close` method.
+
 
 .. class:: RawIOBase
 
-- 
2.40.0