[Python-checkins] r76571 - in python/trunk: Lib/copy.py Lib/test/test_copy.py Misc/ACKS Misc/NEWS

[antoine.pitrou]

Author: antoine.pitrou
Date: Sat Nov 28 16:55:58 2009
New Revision: 76571

Log:
Issue #1515: Enable use of deepcopy() with instance methods.  Patch by Robert Collins.



Modified:
   python/trunk/Lib/copy.py
   python/trunk/Lib/test/test_copy.py
   python/trunk/Misc/ACKS
   python/trunk/Misc/NEWS

Modified: python/trunk/Lib/copy.py
==============================================================================
--- python/trunk/Lib/copy.py	(original)
+++ python/trunk/Lib/copy.py	Sat Nov 28 16:55:58 2009
@@ -260,6 +260,10 @@
 if PyStringMap is not None:
     d[PyStringMap] = _deepcopy_dict
 
+def _deepcopy_method(x, memo): # Copy instance methods
+    return type(x)(x.im_func, deepcopy(x.im_self, memo), x.im_class)
+_deepcopy_dispatch[types.MethodType] = _deepcopy_method
+
 def _keep_alive(x, memo):
     """Keeps a reference to the object x in the memo.
 

Modified: python/trunk/Lib/test/test_copy.py
==============================================================================
--- python/trunk/Lib/test/test_copy.py	(original)
+++ python/trunk/Lib/test/test_copy.py	Sat Nov 28 16:55:58 2009
@@ -672,6 +672,17 @@
         del d
         self.assertEqual(len(v), 1)
 
+    def test_deepcopy_bound_method(self):
+        class Foo(object):
+            def m(self):
+                pass
+        f = Foo()
+        f.b = f.m
+        g = copy.deepcopy(f)
+        self.assertEqual(g.m, g.b)
+        self.assertTrue(g.b.im_self is g)
+        g.b()
+
 
 def global_foo(x, y): return x+y
 

Modified: python/trunk/Misc/ACKS
==============================================================================
--- python/trunk/Misc/ACKS	(original)
+++ python/trunk/Misc/ACKS	Sat Nov 28 16:55:58 2009
@@ -145,6 +145,7 @@
 Dave Cole
 Benjamin Collar
 Jeffery Collins
+Robert Collins
 Paul Colomiets
 Matt Conway
 David M. Cooke

Modified: python/trunk/Misc/NEWS
==============================================================================
--- python/trunk/Misc/NEWS	(original)
+++ python/trunk/Misc/NEWS	Sat Nov 28 16:55:58 2009
@@ -483,6 +483,9 @@
 Library
 -------
 
+- Issue #1515: Enable use of deepcopy() with instance methods.  Patch by
+  Robert Collins.
+
 - Issue #7403: logging: Fixed possible race condition in lock creation.
 
 - Issue #6845: Add restart support for binary upload in ftplib.  The