Issue #16793. Replace deprecated unittest asserts with modern counterparts.
diff --git a/Lib/test/test_calendar.py b/Lib/test/test_calendar.py
index 5d6549c..0f91d29 100644
--- a/Lib/test/test_calendar.py
+++ b/Lib/test/test_calendar.py
@@ -261,7 +261,7 @@
             return
         calendar.LocaleHTMLCalendar(locale='').formatmonthname(2010, 10)
         new_october = calendar.TextCalendar().formatmonthname(2010, 10, 10)
-        self.assertEquals(old_october, new_october)
+        self.assertEqual(old_october, new_october)
 
     def test_itermonthdates(self):
         # ensure itermonthdates doesn't overflow after datetime.MAXYEAR
diff --git a/Lib/test/test_int.py b/Lib/test/test_int.py
index 099640a..f1d4f95 100644
--- a/Lib/test/test_int.py
+++ b/Lib/test/test_int.py
@@ -347,8 +347,8 @@
         for x in values:
             msg = 'x has value %s and type %s' % (x, type(x).__name__)
             try:
-                self.assertEquals(int(x), 100, msg=msg)
-                self.assertEquals(int(x, 2), 4, msg=msg)
+                self.assertEqual(int(x), 100, msg=msg)
+                self.assertEqual(int(x, 2), 4, msg=msg)
             except TypeError, err:
                 raise AssertionError('For %s got TypeError: %s' %
                                      (type(x).__name__, err))
@@ -373,10 +373,10 @@
     # expects x to be a string if base is given.
     @test_support.cpython_only
     def test_int_base_without_x_returns_0(self):
-        self.assertEquals(int(base=6), 0)
+        self.assertEqual(int(base=6), 0)
         # Even invalid bases don't raise an exception.
-        self.assertEquals(int(base=1), 0)
-        self.assertEquals(int(base=1000), 0)
+        self.assertEqual(int(base=1), 0)
+        self.assertEqual(int(base=1000), 0)
 
     @test_support.cpython_only
     def test_small_ints(self):
diff --git a/Lib/test/test_mutex.py b/Lib/test/test_mutex.py
index 2882213..030080e 100644
--- a/Lib/test/test_mutex.py
+++ b/Lib/test/test_mutex.py
@@ -14,7 +14,7 @@
             m.lock(called_by_mutex2, "eggs")
 
         def called_by_mutex2(some_data):
-            self.assertEquals(some_data, "eggs")
+            self.assertEqual(some_data, "eggs")
             self.assertTrue(m.test(), "mutex not held")
             self.assertTrue(ready_for_2,
                          "called_by_mutex2 called too soon")
diff --git a/Lib/test/test_tarfile.py b/Lib/test/test_tarfile.py
index a3685ea..9ec7744 100644
--- a/Lib/test/test_tarfile.py
+++ b/Lib/test/test_tarfile.py
@@ -858,7 +858,7 @@
 
             tar = tarfile.open(tmpname, "r")
             for t in tar:
-                self.assert_(t.name == "." or t.name.startswith("./"))
+                self.assertTrue(t.name == "." or t.name.startswith("./"))
             tar.close()
         finally:
             os.chdir(cwd)