From: Victor Stinner <vstinner@python.org>
Date: Tue, 17 Feb 2026 18:04:17 +0000 (+0100)
Subject: gh-141510: Change repr(frozendict) for empty dict (#144921)
X-Git-Tag: v3.15.0a7~256
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d1505b543a26d3288725ca83e4a70dfa378eb866;p=thirdparty%2FPython%2Fcpython.git

gh-141510: Change repr(frozendict) for empty dict (#144921)

repr(frozendict()) returns "frozendict()" instead of
"frozendict({})".
---

diff --git a/Lib/test/test_dict.py b/Lib/test/test_dict.py
index 2a106a8a4e87..21f8bb11071c 100644
--- a/Lib/test/test_dict.py
+++ b/Lib/test/test_dict.py
@@ -1767,6 +1767,9 @@ class FrozenDictTests(unittest.TestCase):
         self.assertEqual(copy, frozendict({'x': 1}))
 
     def test_repr(self):
+        d = frozendict()
+        self.assertEqual(repr(d), "frozendict()")
+
         d = frozendict(x=1, y=2)
         self.assertEqual(repr(d), "frozendict({'x': 1, 'y': 2})")
 
diff --git a/Objects/dictobject.c b/Objects/dictobject.c
index f7a359e4a1a4..7db2e547b54d 100644
--- a/Objects/dictobject.c
+++ b/Objects/dictobject.c
@@ -7868,6 +7868,11 @@ static PyMethodDef frozendict_methods[] = {
 static PyObject *
 frozendict_repr(PyObject *self)
 {
+    PyDictObject *mp = _PyAnyDict_CAST(self);
+    if (mp->ma_used == 0) {
+        return PyUnicode_FromFormat("%s()", Py_TYPE(self)->tp_name);
+    }
+
     PyObject *repr = anydict_repr_impl(self);
     if (repr == NULL) {
         return NULL;