Index: Objects/unicodeobject.c
===================================================================
--- Objects/unicodeobject.c	(révision 78666)
+++ Objects/unicodeobject.c	(copie de travail)
@@ -1682,6 +1682,19 @@
     return _PyUnicode_AsStringAndSize(unicode, NULL);
 }
 
+char*
+_PyUnicode_AsStringOrDefault(PyObject *unicode, char *default_str)
+{
+    char *str;
+    str = _PyUnicode_AsStringAndSize(unicode, NULL);
+    if (str == NULL) {
+	PyErr_Clear();
+        return default_str;
+    } else {
+        return str;
+    }
+}
+
 Py_UNICODE *PyUnicode_AsUnicode(PyObject *unicode)
 {
     if (!PyUnicode_Check(unicode)) {
Index: Include/unicodeobject.h
===================================================================
--- Include/unicodeobject.h	(révision 78666)
+++ Include/unicodeobject.h	(copie de travail)
@@ -713,7 +713,7 @@
     PyObject *unicode, 
     Py_ssize_t *size);
 
-/* Returns a pointer to the default encoding (normally, UTf-8) of the
+/* Returns a pointer to the default encoding (normally, UTF-8) of the
    Unicode object unicode.
 
    Use of this API is DEPRECATED since no size information can be
@@ -729,6 +729,21 @@
 
 PyAPI_FUNC(char *) _PyUnicode_AsString(PyObject *unicode);
 
+/* Returns a pointer to the default encoding (normally, UTF-8) of the
+   Unicode object unicode, or 'default_str' on unicode error.
+
+   *** This API is for interpreter INTERNAL USE ONLY and will likely
+   *** be removed or changed for Python 3.1.
+
+   *** If you need to access the Unicode object as UTF-8 bytes string,
+   *** please use PyUnicode_AsUTF8String() instead.
+
+*/
+
+PyAPI_FUNC(char *) _PyUnicode_AsStringOrDefault(
+	PyObject *unicode,
+	char *default_str);
+
 /* Returns the currently active default encoding.
 
    The default encoding is currently implemented as run-time settable