Issue #1515: Enable use of deepcopy() with instance methods. Patch by Robert Collins.
diff --git a/Lib/copy.py b/Lib/copy.py
index d3db93d..bbbd5b3 100644
--- a/Lib/copy.py
+++ b/Lib/copy.py
@@ -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.
diff --git a/Lib/test/test_copy.py b/Lib/test/test_copy.py
index ccbd231..823e9b3 100644
--- a/Lib/test/test_copy.py
+++ b/Lib/test/test_copy.py
@@ -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
diff --git a/Misc/ACKS b/Misc/ACKS
index 61d297d..f3ef2e7 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -145,6 +145,7 @@
Dave Cole
Benjamin Collar
Jeffery Collins
+Robert Collins
Paul Colomiets
Matt Conway
David M. Cooke
diff --git a/Misc/NEWS b/Misc/NEWS
index e915e29..2d6b7f0 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -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