Index: Doc/library/datetime.rst
===================================================================
--- Doc/library/datetime.rst	(révision 67177)
+++ Doc/library/datetime.rst	(copie de travail)
@@ -925,6 +925,12 @@
    boundary.
 
 
+.. method:: datetime.totimestamp()
+
+   Return timestamp of the datetime as seconds and milliseconds since the epoch.
+   The same as ``time.mktime(self.timetuple()) + (self.microsecond / 1000000.0)``.
+
+
 .. method:: datetime.toordinal()
 
    Return the proleptic Gregorian ordinal of the date.  The same as
Index: Lib/test/test_datetime.py
===================================================================
--- Lib/test/test_datetime.py	(révision 67177)
+++ Lib/test/test_datetime.py	(copie de travail)
@@ -1458,6 +1458,16 @@
         got = self.theclass.utcfromtimestamp(ts)
         self.verify_field_equality(expected, got)
 
+    def test_totimestamp(self):
+        import time
+
+        now = self.theclass.now()
+        seconds = time.mktime(now.timetuple())
+        seconds += now.microsecond / 1000000.0
+        timestamp = now.totimestamp()
+
+        self.assertEquals(seconds, timestamp)
+
     def test_microsecond_rounding(self):
         # Test whether fromtimestamp "rounds up" floats that are less
         # than one microsecond smaller than an integer.
Index: Modules/datetimemodule.c
===================================================================
--- Modules/datetimemodule.c	(révision 67177)
+++ Modules/datetimemodule.c	(copie de travail)
@@ -4527,6 +4527,41 @@
 	return build_struct_time(y, m, d, hh, mm, ss, 0);
 }
 
+#ifdef HAVE_MKTIME
+
+/* datetime_totimestamp will fail if time.mktime(...) is not defined. */
+static PyObject *
+datetime_totimestamp(PyObject *self)
+{
+	PyObject *timetuple, *time;
+	PyObject *timet, *us, *timestamp;
+
+	/* create the time tuple */
+	timetuple = datetime_timetuple((PyDateTime_DateTime *)self);
+	if (timetuple == NULL)
+		return NULL;
+
+	/* call time.mktime(tuple) */
+	time = PyImport_ImportModuleNoBlock("time");
+	if (time == NULL)
+		return NULL;
+	timet = PyObject_CallMethod(time, "mktime", "O", timetuple);
+	Py_DECREF(timetuple);
+	Py_DECREF(time);
+	if (timet == NULL)
+		return NULL;
+
+	/* add microseconds / 1e6 */
+	us = PyFloat_FromDouble(DATE_GET_MICROSECOND(self) * 1e-6);
+	timestamp = PyNumber_Add(timet, us);
+	Py_DECREF(timet);
+	Py_DECREF(us);
+
+	return timestamp;
+}
+
+#endif
+
 /* Pickle support, a simple use of __reduce__. */
 
 /* Let basestate be the non-tzinfo data string.
@@ -4579,6 +4614,12 @@
 	 PyDoc_STR("timestamp -> UTC datetime from a POSIX timestamp "
 	 	   "(like time.time()).")},
 
+#ifdef HAVE_MKTIME
+	{"totimestamp", (PyCFunction)datetime_totimestamp,
+	 METH_NOARGS,
+	 PyDoc_STR("Return timestamp as seconds and milliseconds since epoch.")},
+#endif
+
 	{"strptime", (PyCFunction)datetime_strptime,
 	 METH_VARARGS | METH_CLASS,
 	 PyDoc_STR("string, format -> new datetime parsed from a string "