diff --git a/Doc/extending/newtypes.rst b/Doc/extending/newtypes.rst
index 6e275e5..ebeca05 100644
--- a/Doc/extending/newtypes.rst
+++ b/Doc/extending/newtypes.rst
@@ -79,27 +79,26 @@
 Moving on, we come to the crunch --- the type object. ::
 
    static PyTypeObject noddy_NoddyType = {
-       PyObject_HEAD_INIT(NULL)
-       0,                         /*ob_size*/
-       "noddy.Noddy",             /*tp_name*/
-       sizeof(noddy_NoddyObject), /*tp_basicsize*/
-       0,                         /*tp_itemsize*/
-       0,                         /*tp_dealloc*/
-       0,                         /*tp_print*/
-       0,                         /*tp_getattr*/
-       0,                         /*tp_setattr*/
-       0,                         /*tp_compare*/
-       0,                         /*tp_repr*/
-       0,                         /*tp_as_number*/
-       0,                         /*tp_as_sequence*/
-       0,                         /*tp_as_mapping*/
-       0,                         /*tp_hash */
-       0,                         /*tp_call*/
-       0,                         /*tp_str*/
-       0,                         /*tp_getattro*/
-       0,                         /*tp_setattro*/
-       0,                         /*tp_as_buffer*/
-       Py_TPFLAGS_DEFAULT,        /*tp_flags*/
+       PyVarObject_HEAD_INIT(NULL, 0)
+       "noddy.Noddy",             /* tp_name */
+       sizeof(noddy_NoddyObject), /* tp_basicsize */
+       0,                         /* tp_itemsize */
+       0,                         /* tp_dealloc */
+       0,                         /* tp_print */
+       0,                         /* tp_getattr */
+       0,                         /* tp_setattr */
+       0,                         /* tp_compare */
+       0,                         /* tp_repr */
+       0,                         /* tp_as_number */
+       0,                         /* tp_as_sequence */
+       0,                         /* tp_as_mapping */
+       0,                         /* tp_hash */
+       0,                         /* tp_call */
+       0,                         /* tp_str */
+       0,                         /* tp_getattro */
+       0,                         /* tp_setattro */
+       0,                         /* tp_as_buffer */
+       Py_TPFLAGS_DEFAULT,        /* tp_flags */
        "Noddy objects",           /* tp_doc */
    };
 
@@ -111,23 +110,16 @@
 This is so important that we're going to pick the top of it apart still
 further::
 
-   PyObject_HEAD_INIT(NULL)
+   PyVarObject_HEAD_INIT(NULL, 0)
 
 This line is a bit of a wart; what we'd like to write is::
 
-   PyObject_HEAD_INIT(&PyType_Type)
+   PyVarObject_HEAD_INIT(&PyType_Type, 0)
 
 as the type of a type object is "type", but this isn't strictly conforming C and
 some compilers complain.  Fortunately, this member will be filled in for us by
 :c:func:`PyType_Ready`. ::
 
-   0,                          /* ob_size */
-
-The :attr:`ob_size` field of the header is not used; its presence in the type
-structure is a historical artifact that is maintained for binary compatibility
-with extension modules compiled for older versions of Python.  Always set this
-field to zero. ::
-
    "noddy.Noddy",              /* tp_name */
 
 The name of our type.  This will appear in the default textual representation of
@@ -171,7 +163,7 @@
 Skipping a number of type methods that we don't provide, we set the class flags
 to :const:`Py_TPFLAGS_DEFAULT`. ::
 
-   Py_TPFLAGS_DEFAULT,        /*tp_flags*/
+   Py_TPFLAGS_DEFAULT,        /* tp_flags */
 
 All types should include this constant in their flags.  It enables all of the
 members defined by the current version of Python.
@@ -244,7 +236,7 @@
 Adding data and methods to the Basic example
 --------------------------------------------
 
-Let's expend the basic example to add some data and methods.  Let's also make
+Let's extend the basic example to add some data and methods.  Let's also make
 the type usable as a base class. We'll create a new module, :mod:`noddy2` that
 adds these capabilities:
 
@@ -284,7 +276,7 @@
    {
        Py_XDECREF(self->first);
        Py_XDECREF(self->last);
-       self->ob_type->tp_free((PyObject*)self);
+       Py_TYPE(self)->tp_free((PyObject*)self);
    }
 
 which is assigned to the :c:member:`~PyTypeObject.tp_dealloc` member::
@@ -497,7 +489,7 @@
 The method is implemented as a C function that takes a :class:`Noddy` (or
 :class:`Noddy` subclass) instance as the first argument.  Methods always take an
 instance as the first argument. Methods often take positional and keyword
-arguments as well, but in this cased we don't take any and don't need to accept
+arguments as well, but in this case we don't take any and don't need to accept
 a positional argument tuple or keyword argument dictionary. This method is
 equivalent to the Python method::
 
@@ -806,7 +798,7 @@
 
 Finally, we add the :const:`Py_TPFLAGS_HAVE_GC` flag to the class flags::
 
-   Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+   Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC, /* tp_flags */
 
 That's pretty much it.  If we had written custom :c:member:`~PyTypeObject.tp_alloc` or
 :c:member:`~PyTypeObject.tp_free` slots, we'd need to modify them for cyclic-garbage collection.
@@ -965,14 +957,15 @@
 
 This function is called when the reference count of the instance of your type is
 reduced to zero and the Python interpreter wants to reclaim it.  If your type
-has memory to free or other clean-up to perform, put it here.  The object itself
-needs to be freed here as well.  Here is an example of this function::
+has memory to free or other clean-up to perform, you can put it here.  The
+object itself needs to be freed here as well.  Here is an example of this
+function::
 
    static void
    newdatatype_dealloc(newdatatypeobject * obj)
    {
        free(obj->obj_UnderlyingDatatypePtr);
-       obj->ob_type->tp_free(obj);
+       Py_TYPE(obj)->tp_free(obj);
    }
 
 .. index::
@@ -1015,7 +1008,7 @@
 
            Py_DECREF(self->my_callback);
        }
-       obj->ob_type->tp_free((PyObject*)self);
+       Py_TYPE(obj)->tp_free((PyObject*)self);
    }
 
 
diff --git a/Doc/includes/noddy.c b/Doc/includes/noddy.c
index ec2d669..9d80bbe 100644
--- a/Doc/includes/noddy.c
+++ b/Doc/includes/noddy.c
@@ -6,27 +6,26 @@
 } noddy_NoddyObject;
 
 static PyTypeObject noddy_NoddyType = {
-    PyObject_HEAD_INIT(NULL)
-    0,                         /*ob_size*/
-    "noddy.Noddy",             /*tp_name*/
-    sizeof(noddy_NoddyObject), /*tp_basicsize*/
-    0,                         /*tp_itemsize*/
-    0,                         /*tp_dealloc*/
-    0,                         /*tp_print*/
-    0,                         /*tp_getattr*/
-    0,                         /*tp_setattr*/
-    0,                         /*tp_compare*/
-    0,                         /*tp_repr*/
-    0,                         /*tp_as_number*/
-    0,                         /*tp_as_sequence*/
-    0,                         /*tp_as_mapping*/
-    0,                         /*tp_hash */
-    0,                         /*tp_call*/
-    0,                         /*tp_str*/
-    0,                         /*tp_getattro*/
-    0,                         /*tp_setattro*/
-    0,                         /*tp_as_buffer*/
-    Py_TPFLAGS_DEFAULT,        /*tp_flags*/
+    PyVarObject_HEAD_INIT(NULL, 0)
+    "noddy.Noddy",             /* tp_name */
+    sizeof(noddy_NoddyObject), /* tp_basicsize */
+    0,                         /* tp_itemsize */
+    0,                         /* tp_dealloc */
+    0,                         /* tp_print */
+    0,                         /* tp_getattr */
+    0,                         /* tp_setattr */
+    0,                         /* tp_compare */
+    0,                         /* tp_repr */
+    0,                         /* tp_as_number */
+    0,                         /* tp_as_sequence */
+    0,                         /* tp_as_mapping */
+    0,                         /* tp_hash */
+    0,                         /* tp_call */
+    0,                         /* tp_str */
+    0,                         /* tp_getattro */
+    0,                         /* tp_setattro */
+    0,                         /* tp_as_buffer */
+    Py_TPFLAGS_DEFAULT,        /* tp_flags */
     "Noddy objects",           /* tp_doc */
 };
 
diff --git a/Doc/includes/noddy2.c b/Doc/includes/noddy2.c
index 2caf985..94b92be 100644
--- a/Doc/includes/noddy2.c
+++ b/Doc/includes/noddy2.c
@@ -13,7 +13,7 @@
 {
     Py_XDECREF(self->first);
     Py_XDECREF(self->last);
-    self->ob_type->tp_free((PyObject*)self);
+    Py_TYPE(self)->tp_free((PyObject*)self);
 }
 
 static PyObject *
@@ -24,18 +24,16 @@
     self = (Noddy *)type->tp_alloc(type, 0);
     if (self != NULL) {
         self->first = PyString_FromString("");
-        if (self->first == NULL)
-          {
+        if (self->first == NULL) {
             Py_DECREF(self);
             return NULL;
-          }
-        
+        }
+
         self->last = PyString_FromString("");
-        if (self->last == NULL)
-          {
+        if (self->last == NULL) {
             Py_DECREF(self);
             return NULL;
-          }
+        }
 
         self->number = 0;
     }
@@ -50,10 +48,10 @@
 
     static char *kwlist[] = {"first", "last", "number", NULL};
 
-    if (! PyArg_ParseTupleAndKeywords(args, kwds, "|OOi", kwlist, 
-                                      &first, &last, 
+    if (! PyArg_ParseTupleAndKeywords(args, kwds, "|OOi", kwlist,
+                                      &first, &last,
                                       &self->number))
-        return -1; 
+        return -1;
 
     if (first) {
         tmp = self->first;
@@ -111,7 +109,7 @@
 
     result = PyString_Format(format, args);
     Py_DECREF(args);
-    
+
     return result;
 }
 
@@ -123,34 +121,34 @@
 };
 
 static PyTypeObject NoddyType = {
-    PyObject_HEAD_INIT(NULL)
-    0,                         /*ob_size*/
-    "noddy.Noddy",             /*tp_name*/
-    sizeof(Noddy),             /*tp_basicsize*/
-    0,                         /*tp_itemsize*/
-    (destructor)Noddy_dealloc, /*tp_dealloc*/
-    0,                         /*tp_print*/
-    0,                         /*tp_getattr*/
-    0,                         /*tp_setattr*/
-    0,                         /*tp_compare*/
-    0,                         /*tp_repr*/
-    0,                         /*tp_as_number*/
-    0,                         /*tp_as_sequence*/
-    0,                         /*tp_as_mapping*/
-    0,                         /*tp_hash */
-    0,                         /*tp_call*/
-    0,                         /*tp_str*/
-    0,                         /*tp_getattro*/
-    0,                         /*tp_setattro*/
-    0,                         /*tp_as_buffer*/
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/
+    PyVarObject_HEAD_INIT(NULL, 0)
+    "noddy.Noddy",             /* tp_name */
+    sizeof(Noddy),             /* tp_basicsize */
+    0,                         /* tp_itemsize */
+    (destructor)Noddy_dealloc, /* tp_dealloc */
+    0,                         /* tp_print */
+    0,                         /* tp_getattr */
+    0,                         /* tp_setattr */
+    0,                         /* tp_compare */
+    0,                         /* tp_repr */
+    0,                         /* tp_as_number */
+    0,                         /* tp_as_sequence */
+    0,                         /* tp_as_mapping */
+    0,                         /* tp_hash */
+    0,                         /* tp_call */
+    0,                         /* tp_str */
+    0,                         /* tp_getattro */
+    0,                         /* tp_setattro */
+    0,                         /* tp_as_buffer */
+    Py_TPFLAGS_DEFAULT |
+        Py_TPFLAGS_BASETYPE,   /* tp_flags */
     "Noddy objects",           /* tp_doc */
-    0,		               /* tp_traverse */
-    0,		               /* tp_clear */
-    0,		               /* tp_richcompare */
-    0,		               /* tp_weaklistoffset */
-    0,		               /* tp_iter */
-    0,		               /* tp_iternext */
+    0,                         /* tp_traverse */
+    0,                         /* tp_clear */
+    0,                         /* tp_richcompare */
+    0,                         /* tp_weaklistoffset */
+    0,                         /* tp_iter */
+    0,                         /* tp_iternext */
     Noddy_methods,             /* tp_methods */
     Noddy_members,             /* tp_members */
     0,                         /* tp_getset */
@@ -172,7 +170,7 @@
 #define PyMODINIT_FUNC void
 #endif
 PyMODINIT_FUNC
-initnoddy2(void) 
+initnoddy2(void)
 {
     PyObject* m;
 
@@ -183,7 +181,7 @@
                        "Example module that creates an extension type.");
 
     if (m == NULL)
-      return;
+        return;
 
     Py_INCREF(&NoddyType);
     PyModule_AddObject(m, "Noddy", (PyObject *)&NoddyType);
diff --git a/Doc/includes/noddy3.c b/Doc/includes/noddy3.c
index 60260ad..43ec42b 100644
--- a/Doc/includes/noddy3.c
+++ b/Doc/includes/noddy3.c
@@ -13,7 +13,7 @@
 {
     Py_XDECREF(self->first);
     Py_XDECREF(self->last);
-    self->ob_type->tp_free((PyObject*)self);
+    Py_TYPE(self)->tp_free((PyObject*)self);
 }
 
 static PyObject *
@@ -24,18 +24,16 @@
     self = (Noddy *)type->tp_alloc(type, 0);
     if (self != NULL) {
         self->first = PyString_FromString("");
-        if (self->first == NULL)
-          {
+        if (self->first == NULL) {
             Py_DECREF(self);
             return NULL;
-          }
-        
+        }
+
         self->last = PyString_FromString("");
-        if (self->last == NULL)
-          {
+        if (self->last == NULL) {
             Py_DECREF(self);
             return NULL;
-          }
+        }
 
         self->number = 0;
     }
@@ -50,10 +48,10 @@
 
     static char *kwlist[] = {"first", "last", "number", NULL};
 
-    if (! PyArg_ParseTupleAndKeywords(args, kwds, "|SSi", kwlist, 
-                                      &first, &last, 
+    if (! PyArg_ParseTupleAndKeywords(args, kwds, "|SSi", kwlist,
+                                      &first, &last,
                                       &self->number))
-        return -1; 
+        return -1;
 
     if (first) {
         tmp = self->first;
@@ -88,22 +86,22 @@
 static int
 Noddy_setfirst(Noddy *self, PyObject *value, void *closure)
 {
-  if (value == NULL) {
-    PyErr_SetString(PyExc_TypeError, "Cannot delete the first attribute");
-    return -1;
-  }
-  
-  if (! PyString_Check(value)) {
-    PyErr_SetString(PyExc_TypeError, 
-                    "The first attribute value must be a string");
-    return -1;
-  }
-      
-  Py_DECREF(self->first);
-  Py_INCREF(value);
-  self->first = value;    
+    if (value == NULL) {
+        PyErr_SetString(PyExc_TypeError, "Cannot delete the first attribute");
+        return -1;
+    }
 
-  return 0;
+    if (! PyString_Check(value)) {
+        PyErr_SetString(PyExc_TypeError,
+                        "The first attribute value must be a string");
+        return -1;
+    }
+
+    Py_DECREF(self->first);
+    Py_INCREF(value);
+    self->first = value;
+
+    return 0;
 }
 
 static PyObject *
@@ -116,30 +114,30 @@
 static int
 Noddy_setlast(Noddy *self, PyObject *value, void *closure)
 {
-  if (value == NULL) {
-    PyErr_SetString(PyExc_TypeError, "Cannot delete the last attribute");
-    return -1;
-  }
-  
-  if (! PyString_Check(value)) {
-    PyErr_SetString(PyExc_TypeError, 
-                    "The last attribute value must be a string");
-    return -1;
-  }
-      
-  Py_DECREF(self->last);
-  Py_INCREF(value);
-  self->last = value;    
+    if (value == NULL) {
+        PyErr_SetString(PyExc_TypeError, "Cannot delete the last attribute");
+        return -1;
+    }
 
-  return 0;
+    if (! PyString_Check(value)) {
+        PyErr_SetString(PyExc_TypeError,
+                        "The last attribute value must be a string");
+        return -1;
+    }
+
+    Py_DECREF(self->last);
+    Py_INCREF(value);
+    self->last = value;
+
+    return 0;
 }
 
 static PyGetSetDef Noddy_getseters[] = {
-    {"first", 
+    {"first",
      (getter)Noddy_getfirst, (setter)Noddy_setfirst,
      "first name",
      NULL},
-    {"last", 
+    {"last",
      (getter)Noddy_getlast, (setter)Noddy_setlast,
      "last name",
      NULL},
@@ -164,7 +162,7 @@
 
     result = PyString_Format(format, args);
     Py_DECREF(args);
-    
+
     return result;
 }
 
@@ -176,34 +174,34 @@
 };
 
 static PyTypeObject NoddyType = {
-    PyObject_HEAD_INIT(NULL)
-    0,                         /*ob_size*/
-    "noddy.Noddy",             /*tp_name*/
-    sizeof(Noddy),             /*tp_basicsize*/
-    0,                         /*tp_itemsize*/
-    (destructor)Noddy_dealloc, /*tp_dealloc*/
-    0,                         /*tp_print*/
-    0,                         /*tp_getattr*/
-    0,                         /*tp_setattr*/
-    0,                         /*tp_compare*/
-    0,                         /*tp_repr*/
-    0,                         /*tp_as_number*/
-    0,                         /*tp_as_sequence*/
-    0,                         /*tp_as_mapping*/
-    0,                         /*tp_hash */
-    0,                         /*tp_call*/
-    0,                         /*tp_str*/
-    0,                         /*tp_getattro*/
-    0,                         /*tp_setattro*/
-    0,                         /*tp_as_buffer*/
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/
+    PyVarObject_HEAD_INIT(NULL, 0)
+    "noddy.Noddy",             /* tp_name */
+    sizeof(Noddy),             /* tp_basicsize */
+    0,                         /* tp_itemsize */
+    (destructor)Noddy_dealloc, /* tp_dealloc */
+    0,                         /* tp_print */
+    0,                         /* tp_getattr */
+    0,                         /* tp_setattr */
+    0,                         /* tp_compare */
+    0,                         /* tp_repr */
+    0,                         /* tp_as_number */
+    0,                         /* tp_as_sequence */
+    0,                         /* tp_as_mapping */
+    0,                         /* tp_hash */
+    0,                         /* tp_call */
+    0,                         /* tp_str */
+    0,                         /* tp_getattro */
+    0,                         /* tp_setattro */
+    0,                         /* tp_as_buffer */
+    Py_TPFLAGS_DEFAULT |
+        Py_TPFLAGS_BASETYPE,   /* tp_flags */
     "Noddy objects",           /* tp_doc */
-    0,		               /* tp_traverse */
-    0,		               /* tp_clear */
-    0,		               /* tp_richcompare */
-    0,		               /* tp_weaklistoffset */
-    0,		               /* tp_iter */
-    0,		               /* tp_iternext */
+    0,                         /* tp_traverse */
+    0,                         /* tp_clear */
+    0,                         /* tp_richcompare */
+    0,                         /* tp_weaklistoffset */
+    0,                         /* tp_iter */
+    0,                         /* tp_iternext */
     Noddy_methods,             /* tp_methods */
     Noddy_members,             /* tp_members */
     Noddy_getseters,           /* tp_getset */
@@ -225,7 +223,7 @@
 #define PyMODINIT_FUNC void
 #endif
 PyMODINIT_FUNC
-initnoddy3(void) 
+initnoddy3(void)
 {
     PyObject* m;
 
@@ -236,7 +234,7 @@
                        "Example module that creates an extension type.");
 
     if (m == NULL)
-      return;
+        return;
 
     Py_INCREF(&NoddyType);
     PyModule_AddObject(m, "Noddy", (PyObject *)&NoddyType);
diff --git a/Doc/includes/noddy4.c b/Doc/includes/noddy4.c
index 878e086..9feb71a 100644
--- a/Doc/includes/noddy4.c
+++ b/Doc/includes/noddy4.c
@@ -27,7 +27,7 @@
     return 0;
 }
 
-static int 
+static int
 Noddy_clear(Noddy *self)
 {
     PyObject *tmp;
@@ -47,7 +47,7 @@
 Noddy_dealloc(Noddy* self)
 {
     Noddy_clear(self);
-    self->ob_type->tp_free((PyObject*)self);
+    Py_TYPE(self)->tp_free((PyObject*)self);
 }
 
 static PyObject *
@@ -58,18 +58,16 @@
     self = (Noddy *)type->tp_alloc(type, 0);
     if (self != NULL) {
         self->first = PyString_FromString("");
-        if (self->first == NULL)
-          {
+        if (self->first == NULL) {
             Py_DECREF(self);
             return NULL;
-          }
-        
+        }
+
         self->last = PyString_FromString("");
-        if (self->last == NULL)
-          {
+        if (self->last == NULL) {
             Py_DECREF(self);
             return NULL;
-          }
+        }
 
         self->number = 0;
     }
@@ -84,10 +82,10 @@
 
     static char *kwlist[] = {"first", "last", "number", NULL};
 
-    if (! PyArg_ParseTupleAndKeywords(args, kwds, "|OOi", kwlist, 
-                                      &first, &last, 
+    if (! PyArg_ParseTupleAndKeywords(args, kwds, "|OOi", kwlist,
+                                      &first, &last,
                                       &self->number))
-        return -1; 
+        return -1;
 
     if (first) {
         tmp = self->first;
@@ -145,7 +143,7 @@
 
     result = PyString_Format(format, args);
     Py_DECREF(args);
-    
+
     return result;
 }
 
@@ -157,34 +155,35 @@
 };
 
 static PyTypeObject NoddyType = {
-    PyObject_HEAD_INIT(NULL)
-    0,                         /*ob_size*/
-    "noddy.Noddy",             /*tp_name*/
-    sizeof(Noddy),             /*tp_basicsize*/
-    0,                         /*tp_itemsize*/
-    (destructor)Noddy_dealloc, /*tp_dealloc*/
-    0,                         /*tp_print*/
-    0,                         /*tp_getattr*/
-    0,                         /*tp_setattr*/
-    0,                         /*tp_compare*/
-    0,                         /*tp_repr*/
-    0,                         /*tp_as_number*/
-    0,                         /*tp_as_sequence*/
-    0,                         /*tp_as_mapping*/
-    0,                         /*tp_hash */
-    0,                         /*tp_call*/
-    0,                         /*tp_str*/
-    0,                         /*tp_getattro*/
-    0,                         /*tp_setattro*/
-    0,                         /*tp_as_buffer*/
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+    PyVarObject_HEAD_INIT(NULL, 0)
+    "noddy.Noddy",             /* tp_name */
+    sizeof(Noddy),             /* tp_basicsize */
+    0,                         /* tp_itemsize */
+    (destructor)Noddy_dealloc, /* tp_dealloc */
+    0,                         /* tp_print */
+    0,                         /* tp_getattr */
+    0,                         /* tp_setattr */
+    0,                         /* tp_compare */
+    0,                         /* tp_repr */
+    0,                         /* tp_as_number */
+    0,                         /* tp_as_sequence */
+    0,                         /* tp_as_mapping */
+    0,                         /* tp_hash */
+    0,                         /* tp_call */
+    0,                         /* tp_str */
+    0,                         /* tp_getattro */
+    0,                         /* tp_setattro */
+    0,                         /* tp_as_buffer */
+    Py_TPFLAGS_DEFAULT |
+        Py_TPFLAGS_BASETYPE |
+        Py_TPFLAGS_HAVE_GC,    /* tp_flags */
     "Noddy objects",           /* tp_doc */
     (traverseproc)Noddy_traverse,   /* tp_traverse */
     (inquiry)Noddy_clear,           /* tp_clear */
-    0,		               /* tp_richcompare */
-    0,		               /* tp_weaklistoffset */
-    0,		               /* tp_iter */
-    0,		               /* tp_iternext */
+    0,                         /* tp_richcompare */
+    0,                         /* tp_weaklistoffset */
+    0,                         /* tp_iter */
+    0,                         /* tp_iternext */
     Noddy_methods,             /* tp_methods */
     Noddy_members,             /* tp_members */
     0,                         /* tp_getset */
@@ -206,7 +205,7 @@
 #define PyMODINIT_FUNC void
 #endif
 PyMODINIT_FUNC
-initnoddy4(void) 
+initnoddy4(void)
 {
     PyObject* m;
 
@@ -217,7 +216,7 @@
                        "Example module that creates an extension type.");
 
     if (m == NULL)
-      return;
+        return;
 
     Py_INCREF(&NoddyType);
     PyModule_AddObject(m, "Noddy", (PyObject *)&NoddyType);
diff --git a/Doc/includes/setup.py b/Doc/includes/setup.py
index b853d23..a38a39d 100644
--- a/Doc/includes/setup.py
+++ b/Doc/includes/setup.py
@@ -5,4 +5,5 @@
          Extension("noddy2", ["noddy2.c"]),
          Extension("noddy3", ["noddy3.c"]),
          Extension("noddy4", ["noddy4.c"]),
+         Extension("shoddy", ["shoddy.c"]),
          ])
diff --git a/Doc/includes/shoddy.c b/Doc/includes/shoddy.c
index 07a4177..4cb39db 100644
--- a/Doc/includes/shoddy.c
+++ b/Doc/includes/shoddy.c
@@ -31,8 +31,7 @@
 
 
 static PyTypeObject ShoddyType = {
-    PyObject_HEAD_INIT(NULL)
-    0,                       /* ob_size */
+    PyVarObject_HEAD_INIT(NULL, 0)
     "shoddy.Shoddy",         /* tp_name */
     sizeof(Shoddy),          /* tp_basicsize */
     0,                       /* tp_itemsize */
@@ -52,7 +51,7 @@
     0,                       /* tp_setattro */
     0,                       /* tp_as_buffer */
     Py_TPFLAGS_DEFAULT |
-      Py_TPFLAGS_BASETYPE,   /* tp_flags */
+        Py_TPFLAGS_BASETYPE, /* tp_flags */
     0,                       /* tp_doc */
     0,                       /* tp_traverse */
     0,                       /* tp_clear */