_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.)
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 @@
# 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