diff -r 64afd5cab40a -r b21bb0a21b52 Lib/unittest/mock.py
--- a/Lib/unittest/mock.py	Tue Dec 13 19:03:51 2016 -0500
+++ b/Lib/unittest/mock.py	Wed Dec 14 10:39:42 2016 +0800
@@ -1961,9 +1961,8 @@
 
     If the _Call has no name then it will match any name.
     """
-    def __new__(cls, value=(), name=None, parent=None, two=False,
+    def __new__(cls, value=(), name='', parent=None, two=False,
                 from_kall=True):
-        name = ''
         args = ()
         kwargs = {}
         _len = len(value)
diff -r 64afd5cab40a -r b21bb0a21b52 Lib/unittest/test/testmock/testhelpers.py
--- a/Lib/unittest/test/testmock/testhelpers.py	Tue Dec 13 19:03:51 2016 -0500
+++ b/Lib/unittest/test/testmock/testhelpers.py	Wed Dec 14 10:39:42 2016 +0800
@@ -307,6 +307,21 @@
         self.assertEqual(args, other_args)
 
 
+    def test_call_with_name(self):
+        self.assertEqual(
+            'foo',
+            _Call((), 'foo')[0],
+        )
+        self.assertEqual(
+            '',
+            _Call((('bar', 'barz'), ), )[0]
+        )
+        self.assertEqual(
+            '',
+            _Call((('bar', 'barz'), {'hello': 'world'}), )[0]
+        )
+
+
 class SpecSignatureTest(unittest.TestCase):
 
     def _check_someclass_mock(self, mock):
@@ -844,6 +859,7 @@
         # property
         check_data_descriptor(foo.prop)
         # property subclass
+        import ipdb; ipdb.set_trace()  # TODO remove it
         check_data_descriptor(foo.subprop)
         # class __slot__
         check_data_descriptor(foo.slot)