From 663fffa4e2d4e4eb4955bfcedfe09453899d1210 Mon Sep 17 00:00:00 2001
From: Brett Cannon <bcannon@gmail.com>
Date: Wed, 25 Mar 2009 23:31:22 +0000
Subject: [PATCH] Fix a circular import dependency.

---
 Lib/weakref.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Lib/weakref.py b/Lib/weakref.py
index 5f672c66a7a..6663c262d14 100644
--- a/Lib/weakref.py
+++ b/Lib/weakref.py
@@ -9,8 +9,6 @@ http://www.python.org/dev/peps/pep-0205/
 # they are called this instead of "ref" to avoid name collisions with
 # the module-global ref() function imported from _weakref.
 
-import collections
-
 from _weakref import (
      getweakrefcount,
      getweakrefs,
@@ -22,6 +20,8 @@ from _weakref import (
 
 from _weakrefset import WeakSet
 
+import collections  # Import after _weakref to avoid circular import.
+
 ProxyTypes = (ProxyType, CallableProxyType)
 
 __all__ = ["ref", "proxy", "getweakrefcount", "getweakrefs",