python · lysnikolaou · Jul 10, 2025 · Jul 8, 2025 · Jul 8, 2025 · Jul 8, 2025
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2025-07-08-23-53-51.gh-issue-132661.B84iYt.rst b/Misc/NEWS.d/next/Core_and_Builtins/2025-07-08-23-53-51.gh-issue-132661.B84iYt.rst
@@ -0,0 +1 @@
+``Interpolation.expression`` now has a default, the empty string.
@@ -54,7 +54,7 @@ typedef struct {
 Interpolation.__new__ as interpolation_new
 
     value: object
-    expression: object(subclass_of='&PyUnicode_Type')
+    expression: object(subclass_of='&PyUnicode_Type', c_default='&_Py_STR(empty)') = ""
     conversion: object(converter='_conversion_converter') = None
     format_spec: object(subclass_of='&PyUnicode_Type', c_default='&_Py_STR(empty)') = ""
 [clinic start generated code]*/
@@ -63,7 +63,7 @@ static PyObject *
 interpolation_new_impl(PyTypeObject *type, PyObject *value,
                        PyObject *expression, PyObject *conversion,
                        PyObject *format_spec)
-/*[clinic end generated code: output=6488e288765bc1a9 input=d91711024068528c]*/
+/*[clinic end generated code: output=6488e288765bc1a9 input=fc5c285c1dd23d36]*/
 {
     interpolationobject *self = PyObject_GC_New(interpolationobject, type);
     if (!self) {
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		``Interpolation.expression`` now has a default, the empty string.