From: Georg Brandl <georg@python.org>
Date: Sun, 15 Mar 2009 21:44:43 +0000 (+0000)
Subject: #5491: clarify nested() semantics.
X-Git-Tag: v2.7a1~1857
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=5a95b21fee671bde9ab843a6a503cce5dafeb002;p=python

#5491: clarify nested() semantics.
---

diff --git a/Doc/library/contextlib.rst b/Doc/library/contextlib.rst
index 8c10c95494..935afeeba9 100644
--- a/Doc/library/contextlib.rst
+++ b/Doc/library/contextlib.rst
@@ -63,14 +63,15 @@ Functions provided:
 
       from contextlib import nested
 
-      with nested(A, B, C) as (X, Y, Z):
+      with nested(A(), B(), C()) as (X, Y, Z):
           do_something()
 
    is equivalent to this::
 
-      with A as X:
-          with B as Y:
-              with C as Z:
+      m1, m2, m3 = A(), B(), C()
+      with m1 as X:
+          with m2 as Y:
+              with m3 as Z:
                   do_something()
 
    Note that if the :meth:`__exit__` method of one of the nested context managers