diff --git a/Examples/python/performance/operator/Makefile b/Examples/python/performance/operator/Makefile
new file mode 100644
index 000000000..0df09d908
--- /dev/null
+++ b/Examples/python/performance/operator/Makefile
@@ -0,0 +1,23 @@
+TOP        = ../../..
+SWIG       = $(TOP)/../preinst-swig
+CXXSRCS       =
+TARGET     = Simple
+INTERFACE  = Simple.i
+
+default : all
+
+all :
+	$(MAKE) -f $(TOP)/Makefile CXXSRCS='$(CXXSRCS)' SWIG='$(SWIG) -module Simple_baseline' \
+	TARGET='$(TARGET)_baseline' INTERFACE='$(INTERFACE)' python_cpp
+	$(MAKE) -f $(TOP)/Makefile CXXSRCS='$(CXXSRCS)' SWIG='$(SWIG) -O -module Simple_optimized' \
+	TARGET='$(TARGET)_optimized' INTERFACE='$(INTERFACE)' python_cpp
+	$(MAKE) -f $(TOP)/Makefile CXXSRCS='$(CXXSRCS)' SWIG='$(SWIG) -builtin -O -module Simple_builtin' \
+	TARGET='$(TARGET)_builtin' INTERFACE='$(INTERFACE)' python_cpp
+
+static :
+	$(MAKE) -f $(TOP)/Makefile CXXSRCS='$(CXXSRCS)' SWIG='$(SWIG)' \
+	TARGET='mypython' INTERFACE='$(INTERFACE)' python_cpp_static
+
+clean :
+	$(MAKE) -f $(TOP)/Makefile python_clean
+	rm -f $(TARGET).py
diff --git a/Examples/python/performance/operator/Simple.i b/Examples/python/performance/operator/Simple.i
new file mode 100644
index 000000000..fb0dd992c
--- /dev/null
+++ b/Examples/python/performance/operator/Simple.i
@@ -0,0 +1,8 @@
+%inline %{
+class MyClass {
+public:
+    MyClass () {}
+    ~MyClass () {}
+    MyClass& operator+ (int i) { return *this; }
+};
+%}
diff --git a/Examples/python/performance/operator/Simple_baseline.py b/Examples/python/performance/operator/Simple_baseline.py
new file mode 100644
index 000000000..62da3e348
--- /dev/null
+++ b/Examples/python/performance/operator/Simple_baseline.py
@@ -0,0 +1,86 @@
+# This file was automatically generated by SWIG (http://www.swig.org).
+# Version 2.0.2
+#
+# Do not make changes to this file unless you know what you are doing--modify
+# the SWIG interface file instead.
+# This file is compatible with both classic and new-style classes.
+
+from sys import version_info
+if version_info >= (2,6,0):
+    def swig_import_helper():
+        from os.path import dirname
+        import imp
+        fp = None
+        try:
+            fp, pathname, description = imp.find_module('_Simple_baseline', [dirname(__file__)])
+        except ImportError:
+            import _Simple_baseline
+            return _Simple_baseline
+        if fp is not None:
+            try:
+                _mod = imp.load_module('_Simple_baseline', fp, pathname, description)
+            finally:
+                fp.close()
+            return _mod
+    _Simple_baseline = swig_import_helper()
+    del swig_import_helper
+else:
+    import _Simple_baseline
+del version_info
+try:
+    _swig_property = property
+except NameError:
+    pass # Python < 2.2 doesn't have 'property'.
+def _swig_setattr_nondynamic(self,class_type,name,value,static=1):
+    if (name == "thisown"): return self.this.own(value)
+    if (name == "this"):
+        if type(value).__name__ == 'SwigPyObject':
+            self.__dict__[name] = value
+            return
+    method = class_type.__swig_setmethods__.get(name,None)
+    if method: return method(self,value)
+    if (not static) or hasattr(self,name):
+        self.__dict__[name] = value
+    else:
+        raise AttributeError("You cannot add attributes to %s" % self)
+
+def _swig_setattr(self,class_type,name,value):
+    return _swig_setattr_nondynamic(self,class_type,name,value,0)
+
+def _swig_getattr(self,class_type,name):
+    if (name == "thisown"): return self.this.own()
+    method = class_type.__swig_getmethods__.get(name,None)
+    if method: return method(self)
+    raise AttributeError(name)
+
+def _swig_repr(self):
+    try: strthis = "proxy of " + self.this.__repr__()
+    except: strthis = ""
+    return "<%s.%s; %s >" % (self.__class__.__module__, self.__class__.__name__, strthis,)
+
+try:
+    _object = object
+    _newclass = 1
+except AttributeError:
+    class _object : pass
+    _newclass = 0
+
+
+class MyClass(_object):
+    __swig_setmethods__ = {}
+    __setattr__ = lambda self, name, value: _swig_setattr(self, MyClass, name, value)
+    __swig_getmethods__ = {}
+    __getattr__ = lambda self, name: _swig_getattr(self, MyClass, name)
+    __repr__ = _swig_repr
+    def __init__(self): 
+        this = _Simple_baseline.new_MyClass()
+        try: self.this.append(this)
+        except: self.this = this
+    __swig_destroy__ = _Simple_baseline.delete_MyClass
+    __del__ = lambda self : None;
+    def __add__(self, *args): return _Simple_baseline.MyClass___add__(self, *args)
+MyClass_swigregister = _Simple_baseline.MyClass_swigregister
+MyClass_swigregister(MyClass)
+
+
+
diff --git a/Examples/python/performance/operator/Simple_builtin.py b/Examples/python/performance/operator/Simple_builtin.py
new file mode 100644
index 000000000..4ecd8a63e
--- /dev/null
+++ b/Examples/python/performance/operator/Simple_builtin.py
@@ -0,0 +1,81 @@
+# This file was automatically generated by SWIG (http://www.swig.org).
+# Version 2.0.2
+#
+# Do not make changes to this file unless you know what you are doing--modify
+# the SWIG interface file instead.
+
+from sys import version_info
+if version_info >= (2,6,0):
+    def swig_import_helper():
+        from os.path import dirname
+        import imp
+        fp = None
+        try:
+            fp, pathname, description = imp.find_module('_Simple_builtin', [dirname(__file__)])
+        except ImportError:
+            import _Simple_builtin
+            return _Simple_builtin
+        if fp is not None:
+            try:
+                _mod = imp.load_module('_Simple_builtin', fp, pathname, description)
+            finally:
+                fp.close()
+            return _mod
+    _Simple_builtin = swig_import_helper()
+    del swig_import_helper
+else:
+    import _Simple_builtin
+del version_info
+from _Simple_builtin import *
+try:
+    _swig_property = property
+except NameError:
+    pass # Python < 2.2 doesn't have 'property'.
+def _swig_setattr_nondynamic(self,class_type,name,value,static=1):
+    if (name == "thisown"): return self.this.own(value)
+    if (name == "this"):
+        if type(value).__name__ == 'SwigPyObject':
+            self.__dict__[name] = value
+            return
+    method = class_type.__swig_setmethods__.get(name,None)
+    if method: return method(self,value)
+    if (not static) or hasattr(self,name):
+        self.__dict__[name] = value
+    else:
+        raise AttributeError("You cannot add attributes to %s" % self)
+
+def _swig_setattr(self,class_type,name,value):
+    return _swig_setattr_nondynamic(self,class_type,name,value,0)
+
+def _swig_getattr(self,class_type,name):
+    if (name == "thisown"): return self.this.own()
+    method = class_type.__swig_getmethods__.get(name,None)
+    if method: return method(self)
+    raise AttributeError(name)
+
+def _swig_repr(self):
+    try: strthis = "proxy of " + self.this.__repr__()
+    except: strthis = ""
+    return "<%s.%s; %s >" % (self.__class__.__module__, self.__class__.__name__, strthis,)
+
+try:
+    _object = object
+    _newclass = 1
+except AttributeError:
+    class _object : pass
+    _newclass = 0
+
+
+def _swig_setattr_nondynamic_method(set):
+    def set_attr(self,name,value):
+        if (name == "thisown"): return self.this.own(value)
+        if hasattr(self,name) or (name == "this"):
+            set(self,name,value)
+        else:
+            raise AttributeError("You cannot add attributes to %s" % self)
+    return set_attr
+
+
+
+
+
diff --git a/Examples/python/performance/operator/Simple_optimized.py b/Examples/python/performance/operator/Simple_optimized.py
new file mode 100644
index 000000000..2db323a34
--- /dev/null
+++ b/Examples/python/performance/operator/Simple_optimized.py
@@ -0,0 +1,93 @@
+# This file was automatically generated by SWIG (http://www.swig.org).
+# Version 2.0.2
+#
+# Do not make changes to this file unless you know what you are doing--modify
+# the SWIG interface file instead.
+
+from sys import version_info
+if version_info >= (3,0,0):
+    new_instancemethod = lambda func, inst, cls: _Simple_optimized.SWIG_PyInstanceMethod_New(func)
+else:
+    from new import instancemethod as new_instancemethod
+if version_info >= (2,6,0):
+    def swig_import_helper():
+        from os.path import dirname
+        import imp
+        fp = None
+        try:
+            fp, pathname, description = imp.find_module('_Simple_optimized', [dirname(__file__)])
+        except ImportError:
+            import _Simple_optimized
+            return _Simple_optimized
+        if fp is not None:
+            try:
+                _mod = imp.load_module('_Simple_optimized', fp, pathname, description)
+            finally:
+                fp.close()
+            return _mod
+    _Simple_optimized = swig_import_helper()
+    del swig_import_helper
+else:
+    import _Simple_optimized
+del version_info
+try:
+    _swig_property = property
+except NameError:
+    pass # Python < 2.2 doesn't have 'property'.
+def _swig_setattr_nondynamic(self,class_type,name,value,static=1):
+    if (name == "thisown"): return self.this.own(value)
+    if (name == "this"):
+        if type(value).__name__ == 'SwigPyObject':
+            self.__dict__[name] = value
+            return
+    method = class_type.__swig_setmethods__.get(name,None)
+    if method: return method(self,value)
+    if (not static) or hasattr(self,name):
+        self.__dict__[name] = value
+    else:
+        raise AttributeError("You cannot add attributes to %s" % self)
+
+def _swig_setattr(self,class_type,name,value):
+    return _swig_setattr_nondynamic(self,class_type,name,value,0)
+
+def _swig_getattr(self,class_type,name):
+    if (name == "thisown"): return self.this.own()
+    method = class_type.__swig_getmethods__.get(name,None)
+    if method: return method(self)
+    raise AttributeError(name)
+
+def _swig_repr(self):
+    try: strthis = "proxy of " + self.this.__repr__()
+    except: strthis = ""
+    return "<%s.%s; %s >" % (self.__class__.__module__, self.__class__.__name__, strthis,)
+
+try:
+    _object = object
+    _newclass = 1
+except AttributeError:
+    class _object : pass
+    _newclass = 0
+
+
+def _swig_setattr_nondynamic_method(set):
+    def set_attr(self,name,value):
+        if (name == "thisown"): return self.this.own(value)
+        if hasattr(self,name) or (name == "this"):
+            set(self,name,value)
+        else:
+            raise AttributeError("You cannot add attributes to %s" % self)
+    return set_attr
+
+
+class MyClass(object):
+    thisown = _swig_property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc='The membership flag')
+    __repr__ = _swig_repr
+    def __init__(self): 
+        _Simple_optimized.MyClass_swiginit(self,_Simple_optimized.new_MyClass())
+    __swig_destroy__ = _Simple_optimized.delete_MyClass
+MyClass.__add__ = new_instancemethod(_Simple_optimized.MyClass___add__,None,MyClass)
+MyClass_swigregister = _Simple_optimized.MyClass_swigregister
+MyClass_swigregister(MyClass)
+
+
+
diff --git a/Examples/python/performance/operator/runme.py b/Examples/python/performance/operator/runme.py
new file mode 100644
index 000000000..7e50aff16
--- /dev/null
+++ b/Examples/python/performance/operator/runme.py
@@ -0,0 +1,17 @@
+#!/usr/bin/env
+
+import sys
+from subprocess import *
+
+proc = Popen([sys.executable, 'runme_baseline.py'], stdout=PIPE)
+(stdout, stderr) = proc.communicate()
+print stdout
+
+proc = Popen([sys.executable, 'runme_optimized.py'], stdout=PIPE)
+(stdout, stderr) = proc.communicate()
+print stdout
+
+proc = Popen([sys.executable, 'runme_builtin.py'], stdout=PIPE)
+(stdout, stderr) = proc.communicate()
+print stdout
+
diff --git a/Examples/python/performance/operator/runme_baseline.py b/Examples/python/performance/operator/runme_baseline.py
new file mode 100644
index 000000000..f7fa9094b
--- /dev/null
+++ b/Examples/python/performance/operator/runme_baseline.py
@@ -0,0 +1,11 @@
+#!/usr/bin/env python
+
+import Simple_baseline
+import time
+
+t1 = time.clock()
+x = Simple_baseline.MyClass()
+for i in range(10000000) :
+    x = x + i
+t2 = time.clock()
+print "Simple_baseline took %f seconds" % (t2 - t1)
diff --git a/Examples/python/performance/operator/runme_builtin.py b/Examples/python/performance/operator/runme_builtin.py
new file mode 100644
index 000000000..73da3afb2
--- /dev/null
+++ b/Examples/python/performance/operator/runme_builtin.py
@@ -0,0 +1,11 @@
+#!/usr/bin/env python
+
+import Simple_builtin
+import time
+
+t1 = time.clock()
+x = Simple_builtin.MyClass()
+for i in range(10000000) :
+    x = x + i
+t2 = time.clock()
+print "Simple_builtin took %f seconds" % (t2 - t1)
diff --git a/Examples/python/performance/operator/runme_optimized.py b/Examples/python/performance/operator/runme_optimized.py
new file mode 100644
index 000000000..4f22e0bda
--- /dev/null
+++ b/Examples/python/performance/operator/runme_optimized.py
@@ -0,0 +1,11 @@
+#!/usr/bin/env python
+
+import Simple_optimized
+import time
+
+t1 = time.clock()
+x = Simple_optimized.MyClass()
+for i in range(10000000) :
+    x = x + i
+t2 = time.clock()
+print "Simple_optimized took %f seconds" % (t2 - t1)