diff --git a/test/dynamo/cpython/3_13/test_defaultdict.diff b/test/dynamo/cpython/3_13/test_defaultdict.diff
new file mode 100644
index 000000000000..65a4cb892936
--- /dev/null
+++ b/test/dynamo/cpython/3_13/test_defaultdict.diff
@@ -0,0 +1,98 @@
+diff --git a/test/dynamo/cpython/3_13/test_defaultdict.py b/test/dynamo/cpython/3_13/test_defaultdict.py
+index bdbe9b81e8f..d55f1dc54c6 100644
+--- a/test/dynamo/cpython/3_13/test_defaultdict.py
++++ b/test/dynamo/cpython/3_13/test_defaultdict.py
+@@ -1,3 +1,60 @@
++# ======= BEGIN Dynamo patch =======
++# Owner(s): ["module: dynamo"]
++
++# ruff: noqa
++# flake8: noqa
++
++# Test copied from
++# https://raw.githubusercontent.com/python/cpython/refs/tags/v3.13.5/Lib/test/test_defaultdict.py
++
++import sys
++import torch
++import torch._dynamo.test_case
++import unittest
++from torch._dynamo.test_case import CPythonTestCase
++from torch.testing._internal.common_utils import (
++    run_tests,
++)
++
++__TestCase = CPythonTestCase
++
++
++# redirect import statements
++import sys
++import importlib.abc
++
++redirect_imports = (
++    "test.mapping_tests",
++    "test.typinganndata",
++    "test.test_grammar",
++    "test.test_math",
++    "test.test_iter",
++    "test.typinganndata.ann_module",
++)
++
++class RedirectImportFinder(importlib.abc.MetaPathFinder):
++    def find_spec(self, fullname, path, target=None):
++        # Check if the import is the problematic one
++        if fullname in redirect_imports:
++            try:
++                # Attempt to import the standalone module
++                name = fullname.removeprefix("test.")
++                r = importlib.import_module(name)
++                # Redirect the module in sys.modules
++                sys.modules[fullname] = r
++                # Return a module spec from the found module
++                return importlib.util.find_spec(name)
++            except ImportError:
++                return None
++        return None
++
++# Add the custom finder to sys.meta_path
++sys.meta_path.insert(0, RedirectImportFinder())
++
++
++# ======= END DYNAMO PATCH =======
++
++
+ """Unit tests for collections.defaultdict."""
+ 
+ import copy
+@@ -9,7 +66,7 @@ from collections import defaultdict
+ def foobar():
+     return list
+ 
+-class TestDefaultDict(unittest.TestCase):
++class TestDefaultDict(__TestCase):
+ 
+     def test_basic(self):
+         d1 = defaultdict()
+@@ -127,11 +184,12 @@ class TestDefaultDict(unittest.TestCase):
+ 
+     def test_recursive_repr(self):
+         # Issue2045: stack overflow when default_factory is a bound method
+-        class sub(defaultdict):
+-            def __init__(self):
+-                self.default_factory = self._factory
+-            def _factory(self):
+-                return []
++        with torch._dynamo.set_fullgraph(fullgraph=False):
++            class sub(defaultdict):
++                def __init__(self):
++                    self.default_factory = self._factory
++                def _factory(self):
++                    return []
+         d = sub()
+         self.assertRegex(repr(d),
+             r"sub\(<bound method .*sub\._factory "
+@@ -187,4 +245,4 @@ class TestDefaultDict(unittest.TestCase):
+             i |= None
+ 
+ if __name__ == "__main__":
+-    unittest.main()
++    run_tests()
diff --git a/test/dynamo/cpython/3_13/test_defaultdict.py b/test/dynamo/cpython/3_13/test_defaultdict.py
new file mode 100644
index 000000000000..d55f1dc54c6f
--- /dev/null
+++ b/test/dynamo/cpython/3_13/test_defaultdict.py
@@ -0,0 +1,248 @@
+# ======= BEGIN Dynamo patch =======
+# Owner(s): ["module: dynamo"]
+
+# ruff: noqa
+# flake8: noqa
+
+# Test copied from
+# https://raw.githubusercontent.com/python/cpython/refs/tags/v3.13.5/Lib/test/test_defaultdict.py
+
+import sys
+import torch
+import torch._dynamo.test_case
+import unittest
+from torch._dynamo.test_case import CPythonTestCase
+from torch.testing._internal.common_utils import (
+    run_tests,
+)
+
+__TestCase = CPythonTestCase
+
+
+# redirect import statements
+import sys
+import importlib.abc
+
+redirect_imports = (
+    "test.mapping_tests",
+    "test.typinganndata",
+    "test.test_grammar",
+    "test.test_math",
+    "test.test_iter",
+    "test.typinganndata.ann_module",
+)
+
+class RedirectImportFinder(importlib.abc.MetaPathFinder):
+    def find_spec(self, fullname, path, target=None):
+        # Check if the import is the problematic one
+        if fullname in redirect_imports:
+            try:
+                # Attempt to import the standalone module
+                name = fullname.removeprefix("test.")
+                r = importlib.import_module(name)
+                # Redirect the module in sys.modules
+                sys.modules[fullname] = r
+                # Return a module spec from the found module
+                return importlib.util.find_spec(name)
+            except ImportError:
+                return None
+        return None
+
+# Add the custom finder to sys.meta_path
+sys.meta_path.insert(0, RedirectImportFinder())
+
+
+# ======= END DYNAMO PATCH =======
+
+
+"""Unit tests for collections.defaultdict."""
+
+import copy
+import pickle
+import unittest
+
+from collections import defaultdict
+
+def foobar():
+    return list
+
+class TestDefaultDict(__TestCase):
+
+    def test_basic(self):
+        d1 = defaultdict()
+        self.assertEqual(d1.default_factory, None)
+        d1.default_factory = list
+        d1[12].append(42)
+        self.assertEqual(d1, {12: [42]})
+        d1[12].append(24)
+        self.assertEqual(d1, {12: [42, 24]})
+        d1[13]
+        d1[14]
+        self.assertEqual(d1, {12: [42, 24], 13: [], 14: []})
+        self.assertTrue(d1[12] is not d1[13] is not d1[14])
+        d2 = defaultdict(list, foo=1, bar=2)
+        self.assertEqual(d2.default_factory, list)
+        self.assertEqual(d2, {"foo": 1, "bar": 2})
+        self.assertEqual(d2["foo"], 1)
+        self.assertEqual(d2["bar"], 2)
+        self.assertEqual(d2[42], [])
+        self.assertIn("foo", d2)
+        self.assertIn("foo", d2.keys())
+        self.assertIn("bar", d2)
+        self.assertIn("bar", d2.keys())
+        self.assertIn(42, d2)
+        self.assertIn(42, d2.keys())
+        self.assertNotIn(12, d2)
+        self.assertNotIn(12, d2.keys())
+        d2.default_factory = None
+        self.assertEqual(d2.default_factory, None)
+        try:
+            d2[15]
+        except KeyError as err:
+            self.assertEqual(err.args, (15,))
+        else:
+            self.fail("d2[15] didn't raise KeyError")
+        self.assertRaises(TypeError, defaultdict, 1)
+
+    def test_missing(self):
+        d1 = defaultdict()
+        self.assertRaises(KeyError, d1.__missing__, 42)
+        d1.default_factory = list
+        self.assertEqual(d1.__missing__(42), [])
+
+    def test_repr(self):
+        d1 = defaultdict()
+        self.assertEqual(d1.default_factory, None)
+        self.assertEqual(repr(d1), "defaultdict(None, {})")
+        self.assertEqual(eval(repr(d1)), d1)
+        d1[11] = 41
+        self.assertEqual(repr(d1), "defaultdict(None, {11: 41})")
+        d2 = defaultdict(int)
+        self.assertEqual(d2.default_factory, int)
+        d2[12] = 42
+        self.assertEqual(repr(d2), "defaultdict(<class 'int'>, {12: 42})")
+        def foo(): return 43
+        d3 = defaultdict(foo)
+        self.assertTrue(d3.default_factory is foo)
+        d3[13]
+        self.assertEqual(repr(d3), "defaultdict(%s, {13: 43})" % repr(foo))
+
+    def test_copy(self):
+        d1 = defaultdict()
+        d2 = d1.copy()
+        self.assertEqual(type(d2), defaultdict)
+        self.assertEqual(d2.default_factory, None)
+        self.assertEqual(d2, {})
+        d1.default_factory = list
+        d3 = d1.copy()
+        self.assertEqual(type(d3), defaultdict)
+        self.assertEqual(d3.default_factory, list)
+        self.assertEqual(d3, {})
+        d1[42]
+        d4 = d1.copy()
+        self.assertEqual(type(d4), defaultdict)
+        self.assertEqual(d4.default_factory, list)
+        self.assertEqual(d4, {42: []})
+        d4[12]
+        self.assertEqual(d4, {42: [], 12: []})
+
+        # Issue 6637: Copy fails for empty default dict
+        d = defaultdict()
+        d['a'] = 42
+        e = d.copy()
+        self.assertEqual(e['a'], 42)
+
+    def test_shallow_copy(self):
+        d1 = defaultdict(foobar, {1: 1})
+        d2 = copy.copy(d1)
+        self.assertEqual(d2.default_factory, foobar)
+        self.assertEqual(d2, d1)
+        d1.default_factory = list
+        d2 = copy.copy(d1)
+        self.assertEqual(d2.default_factory, list)
+        self.assertEqual(d2, d1)
+
+    def test_deep_copy(self):
+        d1 = defaultdict(foobar, {1: [1]})
+        d2 = copy.deepcopy(d1)
+        self.assertEqual(d2.default_factory, foobar)
+        self.assertEqual(d2, d1)
+        self.assertTrue(d1[1] is not d2[1])
+        d1.default_factory = list
+        d2 = copy.deepcopy(d1)
+        self.assertEqual(d2.default_factory, list)
+        self.assertEqual(d2, d1)
+
+    def test_keyerror_without_factory(self):
+        d1 = defaultdict()
+        try:
+            d1[(1,)]
+        except KeyError as err:
+            self.assertEqual(err.args[0], (1,))
+        else:
+            self.fail("expected KeyError")
+
+    def test_recursive_repr(self):
+        # Issue2045: stack overflow when default_factory is a bound method
+        with torch._dynamo.set_fullgraph(fullgraph=False):
+            class sub(defaultdict):
+                def __init__(self):
+                    self.default_factory = self._factory
+                def _factory(self):
+                    return []
+        d = sub()
+        self.assertRegex(repr(d),
+            r"sub\(<bound method .*sub\._factory "
+            r"of sub\(\.\.\., \{\}\)>, \{\}\)")
+
+    def test_callable_arg(self):
+        self.assertRaises(TypeError, defaultdict, {})
+
+    def test_pickling(self):
+        d = defaultdict(int)
+        d[1]
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            s = pickle.dumps(d, proto)
+            o = pickle.loads(s)
+            self.assertEqual(d, o)
+
+    def test_union(self):
+        i = defaultdict(int, {1: 1, 2: 2})
+        s = defaultdict(str, {0: "zero", 1: "one"})
+
+        i_s = i | s
+        self.assertIs(i_s.default_factory, int)
+        self.assertDictEqual(i_s, {1: "one", 2: 2, 0: "zero"})
+        self.assertEqual(list(i_s), [1, 2, 0])
+
+        s_i = s | i
+        self.assertIs(s_i.default_factory, str)
+        self.assertDictEqual(s_i, {0: "zero", 1: 1, 2: 2})
+        self.assertEqual(list(s_i), [0, 1, 2])
+
+        i_ds = i | dict(s)
+        self.assertIs(i_ds.default_factory, int)
+        self.assertDictEqual(i_ds, {1: "one", 2: 2, 0: "zero"})
+        self.assertEqual(list(i_ds), [1, 2, 0])
+
+        ds_i = dict(s) | i
+        self.assertIs(ds_i.default_factory, int)
+        self.assertDictEqual(ds_i, {0: "zero", 1: 1, 2: 2})
+        self.assertEqual(list(ds_i), [0, 1, 2])
+
+        with self.assertRaises(TypeError):
+            i | list(s.items())
+        with self.assertRaises(TypeError):
+            list(s.items()) | i
+
+        # We inherit a fine |= from dict, so just a few sanity checks here:
+        i |= list(s.items())
+        self.assertIs(i.default_factory, int)
+        self.assertDictEqual(i, {1: "one", 2: 2, 0: "zero"})
+        self.assertEqual(list(i), [1, 2, 0])
+
+        with self.assertRaises(TypeError):
+            i |= None
+
+if __name__ == "__main__":
+    run_tests()
diff --git a/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_basic b/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_basic
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_callable_arg b/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_callable_arg
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_copy b/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_copy
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_deep_copy b/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_deep_copy
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_keyerror_without_factory b/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_keyerror_without_factory
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_missing b/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_missing
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_pickling b/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_pickling
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_repr b/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_repr
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_shallow_copy b/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_shallow_copy
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_union b/test/dynamo_expected_failures/CPython313-test_defaultdict-TestDefaultDict.test_union
new file mode 100644
index 000000000000..e69de29bb2d1