1 files changed, 30 insertions, 12 deletions
diff --git a/Lib/copy.py b/Lib/copy.py
index 3f2033f..c227a2e 100644
--- a/Lib/copy.py
+++ b/Lib/copy.py
@@ -49,6 +49,7 @@ __getstate__() and __setstate__().  See the documentation for module
 """
 
 import types
+import weakref
 from copy_reg import dispatch_table
 
 class Error(Exception):
@@ -102,7 +103,7 @@ def _copy_immutable(x):
 for t in (type(None), int, long, float, bool, str, tuple,
           frozenset, type, xrange, types.ClassType,
           types.BuiltinFunctionType, type(Ellipsis),
-          types.FunctionType):
+          types.FunctionType, weakref.ref):
     d[t] = _copy_immutable
 for name in ("ComplexType", "UnicodeType", "CodeType"):
     t = getattr(types, name, None)
@@ -220,6 +221,7 @@ d[xrange] = _deepcopy_atomic
 d[types.ClassType] = _deepcopy_atomic
 d[types.BuiltinFunctionType] = _deepcopy_atomic
 d[types.FunctionType] = _deepcopy_atomic
+d[weakref.ref] = _deepcopy_atomic
 
 def _deepcopy_list(x, memo):
     y = []
@@ -258,6 +260,10 @@ d[dict] = _deepcopy_dict
 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.
 
@@ -322,17 +328,7 @@ def _reconstruct(x, info, deep, memo=None):
         args = deepcopy(args, memo)
     y = callable(*args)
     memo[id(x)] = y
-    if listiter is not None:
-        for item in listiter:
-            if deep:
-                item = deepcopy(item, memo)
-            y.append(item)
-    if dictiter is not None:
-        for key, value in dictiter:
-            if deep:
-                key = deepcopy(key, memo)
-                value = deepcopy(value, memo)
-            y[key] = value
+
     if state:
         if deep:
             state = deepcopy(state, memo)
@@ -348,6 +344,18 @@ def _reconstruct(x, info, deep, memo=None):
             if slotstate is not None:
                 for key, value in slotstate.iteritems():
                     setattr(y, key, value)
+
+    if listiter is not None:
+        for item in listiter:
+            if deep:
+                item = deepcopy(item, memo)
+            y.append(item)
+    if dictiter is not None:
+        for key, value in dictiter:
+            if deep:
+                key = deepcopy(key, memo)
+                value = deepcopy(value, memo)
+            y[key] = value
     return y
 
 del d
@@ -410,6 +418,16 @@ def _test():
     print map(repr.repr, l1)
     print map(repr.repr, l2)
     print map(repr.repr, l3)
+    class odict(dict):
+        def __init__(self, d = {}):
+            self.a = 99
+            dict.__init__(self, d)
+        def __setitem__(self, k, i):
+            dict.__setitem__(self, k, i)
+            self.a
+    o = odict({"A" : "B"})
+    x = deepcopy(o)
+    print(o, x)
 
 if __name__ == '__main__':
     _test()