diff --git a/Doc/c-api/unicode.rst b/Doc/c-api/unicode.rstindex 4845e0f3002..3fcfe9a41c9 100644--- a/Doc/c-api/unicode.rst+++ b/Doc/c-api/unicode.rst@@ -1887,6 +1887,8 @@ object.     Call :c:func:`PyObject_Repr` on *obj* and write the output into *writer*.+   If *obj* is ``NULL``, write ``<NULL>`` into *writer*.+    On success, return ``0``.    On error, set an exception, leave the writer unchanged, and return ``-1``.diff --git a/Lib/test/test_capi/test_unicode.py b/Lib/test/test_capi/test_unicode.pyindex 6a9c60f3a6d..55120448a8a 100644--- a/Lib/test/test_capi/test_unicode.py+++ b/Lib/test/test_capi/test_unicode.py@@ -1779,6 +1779,13 @@ def test_basic(self):         self.assertEqual(writer.finish(),                          "var=long value 'repr'")+    def test_repr_null(self):+        writer = self.create_writer(0)+        writer.write_utf8(b'var=', -1)+        writer.write_repr(NULL)+        self.assertEqual(writer.finish(),+                         "var=<NULL>")+     def test_utf8(self):         writer = self.create_writer(0)         writer.write_utf8(b"ascii", -1)diff --git a/Modules/_testcapi/unicode.c b/Modules/_testcapi/unicode.cindex 203282dd53d..668adc5085b 100644--- a/Modules/_testcapi/unicode.c+++ b/Modules/_testcapi/unicode.c@@ -449,6 +449,7 @@ writer_write_repr(PyObject *self_raw, PyObject *args)     if (!PyArg_ParseTuple(args, "O", &obj)) {         return NULL;     }+    NULLABLE(obj);      if (PyUnicodeWriter_WriteRepr(self->writer, obj) < 0) {         return NULL;diff --git a/Objects/unicode_writer.c b/Objects/unicode_writer.cindex 2b944bf1ea8..cd2688e32df 100644--- a/Objects/unicode_writer.c+++ b/Objects/unicode_writer.c@@ -383,6 +383,10 @@ PyUnicodeWriter_WriteStr(PyUnicodeWriter *writer, PyObject *obj) int PyUnicodeWriter_WriteRepr(PyUnicodeWriter *writer, PyObject *obj) {+    if (obj == NULL) {+        return _PyUnicodeWriter_WriteASCIIString((_PyUnicodeWriter*)writer, "<NULL>", 6);+    }+     if (Py_TYPE(obj) == &PyLong_Type) {         return _PyLong_FormatWriter((_PyUnicodeWriter*)writer, obj, 10, 0);     }

diff --git a/Lib/test/test_capi/test_tuple.py b/Lib/test/test_capi/test_tuple.pyindex 0c27e81168f..51d26640865 100644--- a/Lib/test/test_capi/test_tuple.py+++ b/Lib/test/test_capi/test_tuple.py@@ -73,6 +73,11 @@ def test_tuple_new(self):         self.assertRaises(SystemError, tuple_new, PY_SSIZE_T_MIN)         self.assertRaises(MemoryError, tuple_new, PY_SSIZE_T_MAX)++    def test_uninitialized_tuple_repr(self):+        tup = _testlimitedcapi.tuple_new(3)+        self.assertEqual(repr(tup), '(<NULL>, <NULL>, <NULL>)')+     def test_tuple_fromarray(self):         # Test PyTuple_FromArray()         tuple_fromarray = _testcapi.tuple_fromarray

cherry_picker 0f2246b1553f401da5ade47e0fd1c80ad7a8dfa5 3.14

cherry_picker 0f2246b1553f401da5ade47e0fd1c80ad7a8dfa5 3.13