+/*----- Python version compatibility hacks --------------------------------*/
+
+/* The handy `Py_TYPE' and `Py_SIZE' macros turned up in 2.6. Define them if
+ * they're not already here.
+ */
+#ifndef Py_TYPE
+# define Py_TYPE(obj) (((PyObject *)(obj))->ob_type)
+#endif
+#ifndef Py_SIZE
+# define Py_SIZE(obj) (((PyVarObject *)(obj))->ob_size)
+#endif
+
+/* Python 3 added internal structure to the various object headers, and
+ * defined a new macro `PyVarObject_HEAD_INIT' to initialize variable-length
+ * static instances correctly. Define it if it's not already here.
+ */
+#ifndef PyVarObject_HEAD_INIT
+# define PyVarObject_HEAD_INIT(super, sz) PyObject_HEAD_INIT(super) sz,
+#endif
+
+/* Python 3.2 changed the type of hash values, so paper over this annoying
+ * difference.
+ */
+#if PY_VERSION_HEX < 0x03020000
+ typedef long Py_hash_t;
+#endif
+