Mercurial > cpython-lru_cache-weakref

diff Lib/contextlib.py @ 54823:45506be44514

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Merged revisions 73518-73519 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r73518 | nick.coghlan | 2009-06-23 20:19:30 +1000 (Tue, 23 Jun 2009) | 1 line Issue 6288: Update contextlib.nested() docstring to reflect new documentation ........ r73519 | nick.coghlan | 2009-06-23 20:51:02 +1000 (Tue, 23 Jun 2009) | 1 line Remove markup from docstring ........
author Nick Coghlan <ncoghlan@gmail.com>
date Tue, 23 Jun 2009 10:55:52 +0000
parents 13a9874d8f47
children e3fa2ddbb3a3
line wrap: on
line diff
--- a/Lib/contextlib.py	Tue Jun 23 03:09:33 2009 +0000
+++ b/Lib/contextlib.py	Tue Jun 23 10:55:52 2009 +0000
@@ -87,19 +87,17 @@
 
 @contextmanager
 def nested(*managers):
-    """Support multiple context managers in a single with-statement.
+    """Combine multiple context managers into a single nested context manager.
 
-    Code like this:
-
-        with nested(A, B, C) as (X, Y, Z):
-            <body>
+   This function has been deprecated in favour of the multiple manager form
+   of the with statement.
 
-    is equivalent to this:
+   The one advantage of this function over the multiple manager form of the
+   with statement is that argument unpacking allows it to be
+   used with a variable number of context managers as follows:
 
-        with A as X:
-            with B as Y:
-                with C as Z:
-                    <body>
+      with nested(*managers):
+          do_something()
 
     """
     warn("With-statements now directly support multiple context managers",