diff --git a/Lib/ctypes/test/test_callbacks.py b/Lib/ctypes/test/test_callbacks.py
index d870eb4..bf580ae 100644
--- a/Lib/ctypes/test/test_callbacks.py
+++ b/Lib/ctypes/test/test_callbacks.py
@@ -14,7 +14,7 @@
         return args[-1]
 
     def check_type(self, typ, arg):
-        PROTO = self.functype.im_func(typ, typ)
+        PROTO = self.functype.__func__(typ, typ)
         result = PROTO(self.callback)(arg)
         if typ == c_float:
             self.failUnlessAlmostEqual(result, arg, places=5)
@@ -22,7 +22,7 @@
             self.failUnlessEqual(self.got_args, (arg,))
             self.failUnlessEqual(result, arg)
 
-        PROTO = self.functype.im_func(typ, c_byte, typ)
+        PROTO = self.functype.__func__(typ, c_byte, typ)
         result = PROTO(self.callback)(-3, arg)
         if typ == c_float:
             self.failUnlessAlmostEqual(result, arg, places=5)
@@ -110,12 +110,12 @@
         # functions, the type must have a non-NULL stgdict->setfunc.
         # POINTER(c_double), for example, is not supported.
 
-        prototype = self.functype.im_func(POINTER(c_double))
+        prototype = self.functype.__func__(POINTER(c_double))
         # The type is checked when the prototype is called
         self.assertRaises(TypeError, prototype, lambda: None)
 
     def test_unsupported_restype_2(self):
-        prototype = self.functype.im_func(object)
+        prototype = self.functype.__func__(object)
         self.assertRaises(TypeError, prototype, lambda: None)
 
 try:
diff --git a/Lib/dis.py b/Lib/dis.py
index 4cf452a..6d52694 100644
--- a/Lib/dis.py
+++ b/Lib/dis.py
@@ -18,8 +18,8 @@
     if x is None:
         distb()
         return
-    if hasattr(x, 'im_func'):
-        x = x.im_func
+    if hasattr(x, '__func__'):
+        x = x.__func__
     if hasattr(x, '__code__'):
         x = x.__code__
     if hasattr(x, '__dict__'):
diff --git a/Lib/doctest.py b/Lib/doctest.py
index 5b18073..f135027 100644
--- a/Lib/doctest.py
+++ b/Lib/doctest.py
@@ -913,7 +913,7 @@
                 if isinstance(val, staticmethod):
                     val = getattr(obj, valname)
                 if isinstance(val, classmethod):
-                    val = getattr(obj, valname).im_func
+                    val = getattr(obj, valname).__func__
 
                 # Recurse to methods, properties, and nested classes.
                 if ((inspect.isfunction(val) or inspect.isclass(val) or
@@ -985,7 +985,7 @@
                     break
 
         # Find the line number for functions & methods.
-        if inspect.ismethod(obj): obj = obj.im_func
+        if inspect.ismethod(obj): obj = obj.__func__
         if inspect.isfunction(obj): obj = obj.__code__
         if inspect.istraceback(obj): obj = obj.tb_frame
         if inspect.isframe(obj): obj = obj.f_code
diff --git a/Lib/idlelib/CallTips.py b/Lib/idlelib/CallTips.py
index aee7e61..cda2be9 100644
--- a/Lib/idlelib/CallTips.py
+++ b/Lib/idlelib/CallTips.py
@@ -116,7 +116,7 @@
 def _find_constructor(class_ob):
     "Find the nearest __init__() in the class tree."
     try:
-        return class_ob.__init__.im_func
+        return class_ob.__init__.__func__
     except AttributeError:
         for base in class_ob.__bases__:
             init = _find_constructor(base)
@@ -133,7 +133,7 @@
             if fob is None:
                 fob = lambda: None
         elif isinstance(ob, types.MethodType):
-            fob = ob.im_func
+            fob = ob.__func__
         else:
             fob = ob
         if isinstance(fob, (types.FunctionType, types.LambdaType)):
@@ -183,7 +183,7 @@
             name = t.__name__
             # exercise fetch_tip(), not just get_argspec()
             try:
-                qualified_name = "%s.%s" % (t.im_class.__name__, name)
+                qualified_name = "%s.%s" % (t.__self__.__class__.__name__, name)
             except AttributeError:
                 qualified_name = name
             argspec = ct.fetch_tip(qualified_name)
diff --git a/Lib/inspect.py b/Lib/inspect.py
index 3a95796..a1910e4 100644
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@@ -55,9 +55,8 @@
     Instance method objects provide these attributes:
         __doc__         documentation string
         __name__        name with which this method was defined
-        im_class        class object in which this method belongs
-        im_func         function object containing implementation of method
-        im_self         instance to which this method is bound"""
+        __func__        function object containing implementation of method
+        __self__        instance to which this method is bound"""
     return isinstance(object, types.MethodType)
 
 def ismethoddescriptor(object):
@@ -73,7 +72,7 @@
     Methods implemented via descriptors that also pass one of the other
     tests return false from the ismethoddescriptor() test, simply because
     the other tests promise more -- you can, e.g., count on having the
-    im_func attribute (etc) when an object passes ismethod()."""
+    __func__ attribute (etc) when an object passes ismethod()."""
     return (hasattr(object, "__get__")
             and not hasattr(object, "__set__") # else it's a data descriptor
             and not ismethod(object)           # mutual exclusion
@@ -351,7 +350,7 @@
             return object.__file__
         raise TypeError('arg is a built-in class')
     if ismethod(object):
-        object = object.im_func
+        object = object.__func__
     if isfunction(object):
         object = object.__code__
     if istraceback(object):
@@ -494,7 +493,7 @@
             raise IOError('could not find class definition')
 
     if ismethod(object):
-        object = object.im_func
+        object = object.__func__
     if isfunction(object):
         object = object.__code__
     if istraceback(object):
@@ -744,7 +743,7 @@
     """
 
     if ismethod(func):
-        func = func.im_func
+        func = func.__func__
     if not isfunction(func):
         raise TypeError('arg is not a Python function')
     args, varargs, kwonlyargs, varkw = _getfullargs(func.__code__)
diff --git a/Lib/lib-tk/Tkinter.py b/Lib/lib-tk/Tkinter.py
index f40a553..aecb317 100644
--- a/Lib/lib-tk/Tkinter.py
+++ b/Lib/lib-tk/Tkinter.py
@@ -1081,7 +1081,7 @@
         f = CallWrapper(func, subst, self).__call__
         name = repr(id(f))
         try:
-            func = func.im_func
+            func = func.__func__
         except AttributeError:
             pass
         try:
diff --git a/Lib/pdb.py b/Lib/pdb.py
index 3d79b4d..f5bdb20 100755
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -345,8 +345,8 @@
                 except:
                     func = arg
                 try:
-                    if hasattr(func, 'im_func'):
-                        func = func.im_func
+                    if hasattr(func, '__func__'):
+                        func = func.__func__
                     code = func.__code__
                     #use co_name to identify the bkpt (function names
                     #could be aliased, but co_name is invariant)
@@ -789,7 +789,7 @@
             print('Function', code.co_name, file=self.stdout)
             return
         # Is it an instance method?
-        try: code = value.im_func.__code__
+        try: code = value.__func__.__code__
         except: pass
         if code:
             print('Method', code.co_name, file=self.stdout)
diff --git a/Lib/pydoc.py b/Lib/pydoc.py
index 3cffa06..51d627e 100755
--- a/Lib/pydoc.py
+++ b/Lib/pydoc.py
@@ -848,17 +848,17 @@
         note = ''
         skipdocs = 0
         if inspect.ismethod(object):
-            imclass = object.im_class
+            imclass = object.__self__.__class__
             if cl:
                 if imclass is not cl:
                     note = ' from ' + self.classlink(imclass, mod)
             else:
-                if object.im_self is not None:
+                if object.__self__ is not None:
                     note = ' method of %s instance' % self.classlink(
-                        object.im_self.__class__, mod)
+                        object.__self__.__class__, mod)
                 else:
                     note = ' unbound %s method' % self.classlink(imclass,mod)
-            object = object.im_func
+            object = object.__func__
 
         if name == realname:
             title = '<a name="%s"><strong>%s</strong></a>' % (anchor, realname)
@@ -1227,17 +1227,17 @@
         note = ''
         skipdocs = 0
         if inspect.ismethod(object):
-            imclass = object.im_class
+            imclass = object.__self__.__class__
             if cl:
                 if imclass is not cl:
                     note = ' from ' + classname(imclass, mod)
             else:
-                if object.im_self is not None:
+                if object.__self__ is not None:
                     note = ' method of %s instance' % classname(
-                        object.im_self.__class__, mod)
+                        object.__self__.__class__, mod)
                 else:
                     note = ' unbound %s method' % classname(imclass,mod)
-            object = object.im_func
+            object = object.__func__
 
         if name == realname:
             title = self.bold(realname)
diff --git a/Lib/test/crashers/borrowed_ref_2.py b/Lib/test/crashers/borrowed_ref_2.py
index f3ca350..6e403eb 100644
--- a/Lib/test/crashers/borrowed_ref_2.py
+++ b/Lib/test/crashers/borrowed_ref_2.py
@@ -33,6 +33,6 @@
 i = 0
 del a
 while 1:
-    c.d = 42         # segfaults in PyMethod_New(im_func=D.__set__, im_self=d)
+    c.d = 42         # segfaults in PyMethod_New(__func__=D.__set__, __self__=d)
     lst[i] = c.g     # consume the free list of instancemethod objects
     i += 1
diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
index e093ce8..a518f16 100644
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -280,12 +280,12 @@
 
     c = C()
     vereq(interesting(dir(c)), cstuff)
-    #verify('im_self' in dir(C.Cmethod))
+    #verify('__self__' in dir(C.Cmethod))
 
     c.cdata = 2
     c.cmethod = lambda self: 0
     vereq(interesting(dir(c)), cstuff + ['cdata', 'cmethod'])
-    #verify('im_self' in dir(c.Cmethod))
+    #verify('__self__' in dir(c.Cmethod))
 
     class A(C):
         Adata = 1
@@ -293,13 +293,13 @@
 
     astuff = ['Adata', 'Amethod'] + cstuff
     vereq(interesting(dir(A)), astuff)
-    #verify('im_self' in dir(A.Amethod))
+    #verify('__self__' in dir(A.Amethod))
     a = A()
     vereq(interesting(dir(a)), astuff)
     a.adata = 42
     a.amethod = lambda self: 3
     vereq(interesting(dir(a)), astuff + ['adata', 'amethod'])
-    #verify('im_self' in dir(a.Amethod))
+    #verify('__self__' in dir(a.Amethod))
 
     # Try a module subclass.
     import sys
@@ -1418,10 +1418,10 @@
     vereq(ff.__get__(0)(42), (int, 42))
 
     # Test super() with classmethods (SF bug 535444)
-    veris(C.goo.im_self, C)
-    veris(D.goo.im_self, D)
-    veris(super(D,D).goo.im_self, D)
-    veris(super(D,d).goo.im_self, D)
+    veris(C.goo.__self__, C)
+    veris(D.goo.__self__, D)
+    veris(super(D,D).goo.__self__, D)
+    veris(super(D,d).goo.__self__, D)
     vereq(super(D,D).goo(), (D,))
     vereq(super(D,d).goo(), (D,))
 
@@ -1507,7 +1507,7 @@
     r = repr(E().foo)
     verify(r.startswith("<bound method E.foo "), r)
     r = repr(C.foo.__get__(C()))
-    verify(r.startswith("<bound method ?.foo "), r)
+    verify(r.startswith("<bound method "), r)
 
 def compattr():
     if verbose: print("Testing computed attributes...")
@@ -1687,7 +1687,7 @@
     vereq(d2.goo(), 1)
     class E(object):
         foo = C.foo
-    vereq(E().foo.im_func, C.foo) # i.e., unbound
+    vereq(E().foo.__func__, C.foo) # i.e., unbound
     r = repr(C.foo.__get__(C(1)))
     verify(r.startswith("<bound method "), r)
 
@@ -1864,17 +1864,6 @@
 ##         raise TestFailed, "expected a RuntimeError for print recursion"
 ##     sys.stdout = test_stdout
 
-    # Bug #1202533.
-    class A(object):
-        pass
-    A.__mul__ = new.instancemethod(lambda self, x: self * x, None, A)
-    try:
-        A()*2
-    except RuntimeError:
-        pass
-    else:
-        raise TestFailed("expected a RuntimeError")
-
 def weakrefs():
     if verbose: print("Testing weak references...")
     import weakref
diff --git a/Lib/test/test_funcattrs.py b/Lib/test/test_funcattrs.py
index b9b2e6e..3d0d4aa 100644
--- a/Lib/test/test_funcattrs.py
+++ b/Lib/test/test_funcattrs.py
@@ -104,11 +104,12 @@
 if f2.a.one != f1.a.one != F.a.one != 11:
     raise TestFailed
 
-# im_func may not be a Python method!
+# __func__ may not be a Python method!
 import new
-F.id = new.instancemethod(id, None, F)
+F.id = id
 
 eff = F()
+eff.id = new.instancemethod(id, eff)
 if eff.id() != id(eff):
     raise TestFailed
 
@@ -296,32 +297,32 @@
     verify(f.__dict__ == {'world': 'hello'})
     cantset(f, "__dict__", None)
 
-def test_im_class():
+def test___self__():
     class C:
         def foo(self): pass
-    #verify(C.foo.im_class is C)
-    verify(C().foo.im_class is C)
-    #cantset(C.foo, "im_class", C)
-    cantset(C().foo, "im_class", C)
+    #verify(C.foo.__self__.__class__ is C)
+    verify(C().foo.__self__.__class__ is C)
+    #cantset(C.foo, "__self__.__class__", C)
+    cantset(C().foo, "__self__.__class__", C)
 
-def test_im_func():
+def test___func__():
     def foo(self): pass
     class C:
         pass
     C.foo = foo
-    #verify(C.foo.im_func is foo)
-    verify(C().foo.im_func is foo)
-    #cantset(C.foo, "im_func", foo)
-    cantset(C().foo, "im_func", foo)
+    #verify(C.foo.__func__ is foo)
+    verify(C().foo.__func__ is foo)
+    #cantset(C.foo, "__func__", foo)
+    cantset(C().foo, "__func__", foo)
 
-def test_im_self():
+def test___self__():
     class C:
         def foo(self): pass
-    #verify(C.foo.im_self is None)
+    #verify(C.foo.__self__ is None)
     c = C()
-    #verify(c.foo.im_self is c)
-    #cantset(C.foo, "im_self", None)
-    #cantset(c.foo, "im_self", c)
+    #verify(c.foo.__self__ is c)
+    #cantset(C.foo, "__self__", None)
+    #cantset(c.foo, "__self__", c)
 
 def test_im_dict():
     class C:
@@ -358,9 +359,9 @@
     test_func_defaults()
     test_func_dict()
     # Tests for instance method attributes
-    test_im_class()
-    test_im_func()
-    test_im_self()
+    test___self__()
+    test___func__()
+    test___self__()
     test_im_dict()
     test_im_doc()
     test_im_name()
diff --git a/Lib/test/test_new.py b/Lib/test/test_new.py
index 797a8c3..8e1d49d 100644
--- a/Lib/test/test_new.py
+++ b/Lib/test/test_new.py
@@ -25,7 +25,7 @@
         # new.instancemethod()
         c = C()
         c.yolks = 3
-        im = new.instancemethod(break_yolks, c, C)
+        im = new.instancemethod(break_yolks, c)
 
         self.assertEqual(c.get_yolks(), 3,
             'Broken call of hand-crafted class instance')
@@ -43,7 +43,7 @@
         self.assertEqual(c.get_yolks(), -1)
 
         # Verify that dangerous instance method creation is forbidden
-        self.assertRaises(TypeError, new.instancemethod, break_yolks, None)
+        self.assertRaises(TypeError, new.instancemethod, None)
 
         # Verify that instancemethod() doesn't allow keyword args
         self.assertRaises(TypeError, new.instancemethod, break_yolks, c, kw=1)
diff --git a/Lib/test/test_profilehooks.py b/Lib/test/test_profilehooks.py
index 0f5616d..3a17dc7 100644
--- a/Lib/test/test_profilehooks.py
+++ b/Lib/test/test_profilehooks.py
@@ -31,7 +31,7 @@
 
     def get_events(self):
         """Remove calls to add_event()."""
-        disallowed = [ident(self.add_event.im_func), ident(ident)]
+        disallowed = [ident(self.add_event.__func__), ident(ident)]
         self.frames = None
 
         return [item for item in self.events if item[2] not in disallowed]
diff --git a/Lib/test/test_pyclbr.py b/Lib/test/test_pyclbr.py
index bcb7988..b88cb7e 100644
--- a/Lib/test/test_pyclbr.py
+++ b/Lib/test/test_pyclbr.py
@@ -67,7 +67,7 @@
             if isinstance(obj, MethodType):
                 # could be a classmethod
                 if (not isinstance(classdict[name], ClassMethodType) or
-                    obj.im_self is not oclass):
+                    obj.__self__ is not oclass):
                     return False
             elif not isinstance(obj, FunctionType):
                 return False