diff -r 15c33340047f Doc/c-api/datetime.rst
--- a/Doc/c-api/datetime.rst	Sat Dec 17 10:23:14 2011 +0100
+++ b/Doc/c-api/datetime.rst	Sat Jan 07 14:45:10 2012 +0100
@@ -170,6 +170,31 @@
 Return the microsecond, as an int from 0 through 999999.
 
 
+Macros to extract fields from time delta objects. The argument must be an
+instance of :c:data:`PyDateTime_Delta`, including subclasses. The argument must
+not be *NULL*, and the type is not checked:
+
+.. c:function:: int PyDateTime_DELTA_GET_DAYS(PyDateTime_Delta *o)
+
+ Return the number of days, as an int from -999999999 to 999999999.
+
+ .. versionadded:: 3.3
+
+
+.. c:function:: int PyDateTime_DELTA_GET_SECONDS(PyDateTime_Delta *o)
+
+ Return the number of seconds, as an int from 0 through 86399.
+
+ .. versionadded:: 3.3
+
+
+.. c:function:: int PyDateTime_DELTA_GET_MICROSECOND(PyDateTime_Delta *o)
+
+ Return the number of microseconds, as an int from 0 through 999999.
+
+ .. versionadded:: 3.3
+
+
 Macros for the convenience of modules implementing the DB API:
 
 .. c:function:: PyObject* PyDateTime_FromTimestamp(PyObject *args)
diff -r 15c33340047f Include/datetime.h
--- a/Include/datetime.h	Sat Dec 17 10:23:14 2011 +0100
+++ b/Include/datetime.h	Sat Jan 07 14:45:10 2012 +0100
@@ -135,6 +135,12 @@
 (((PyDateTime_Time*)o)->data[4] << 8) &#124; \ ((PyDateTime_Time*)o)->data[5])
 
+/* Apply for time delta instances */
+#define PyDateTime_DELTA_GET_DAYS(o) (((PyDateTime_Delta*)o)->days)
+#define PyDateTime_DELTA_GET_SECONDS(o) (((PyDateTime_Delta*)o)->seconds)
+#define PyDateTime_DELTA_GET_MICROSECONDS(o) \
+ (((PyDateTime_Delta*)o)->microseconds)
+
 
 /* Define structure for C API. */
 typedef struct {
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