From 698acf98fdafd14b1b5ad380e3c56b31ab33a229 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Tue, 25 Sep 2001 19:46:05 +0000
Subject: _reconstructor(): there's no need for tricks with assignment to
 __class__.  The __new__ protocol is up to this.  (Thanks to Tim for pointing
 this out.)

---
 Lib/copy_reg.py | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/Lib/copy_reg.py b/Lib/copy_reg.py
index e93c2a3..eb02864 100644
--- a/Lib/copy_reg.py
+++ b/Lib/copy_reg.py
@@ -36,16 +36,9 @@ pickle(type(1j), pickle_complex, complex)
 
 # Support for picking new-style objects
 
-_dummy_classes = {}
-
 def _reconstructor(cls, base, state):
-    dummy = _dummy_classes.get(base)
-    if dummy is None:
-        class dummy(base): pass
-        _dummy_classes[base] = dummy
-    obj = dummy(state)
-    obj._foo = 1; del obj._foo # hack to create __dict__
-    obj.__class__ = cls
+    obj = base.__new__(cls, state)
+    base.__init__(obj, state)
     return obj
 _reconstructor.__safe_for_unpickling__ = 1
 
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