diff --git a/Lib/test/test_compiler_assemble.py b/Lib/test/test_compiler_assemble.py
index 1b98b0d97..99a11e99d 100644
--- a/Lib/test/test_compiler_assemble.py
+++ b/Lib/test/test_compiler_assemble.py
@@ -84,7 +84,7 @@ class IsolatedAssembleTests(AssemblerTestCase):
                 return x
             return inner() % 2
 
-        inner_code = mod_two.__code__.co_consts[1]
+        inner_code = mod_two.__code__.co_consts[0]
         assert isinstance(inner_code, types.CodeType)
 
         metadata = {
@@ -125,13 +125,15 @@ class IsolatedAssembleTests(AssemblerTestCase):
         # code for "try: pass\n except: pass"
         insts = [
             ('RESUME', 0),
-            ('SETUP_FINALLY', 3),
-            ('RETURN_CONST', 0),
-            ('SETUP_CLEANUP', 8),
+            ('SETUP_FINALLY', 4),
+            ('LOAD_CONST', 0),
+            ('RETURN_VALUE', None),
+            ('SETUP_CLEANUP', 10),
             ('PUSH_EXC_INFO', None),
             ('POP_TOP', None),
             ('POP_EXCEPT', None),
-            ('RETURN_CONST', 0),
+            ('LOAD_CONST', 0),
+            ('RETURN_VALUE', None),
             ('COPY', 3),
             ('POP_EXCEPT', None),
             ('RERAISE', 1),
@@ -144,4 +146,4 @@ class IsolatedAssembleTests(AssemblerTestCase):
                                          L1 to L2 -> L2 [0]
                                          L2 to L3 -> L3 [1] lasti
                                     """)
-        self.assertTrue(output.getvalue().endswith(exc_table))
+        self.assertEndsWith(output.getvalue(), exc_table)
diff --git a/Lib/test/test_compiler_codegen.py b/Lib/test/test_compiler_codegen.py
index 8a15c400a..d02937c84 100644
--- a/Lib/test/test_compiler_codegen.py
+++ b/Lib/test/test_compiler_codegen.py
@@ -26,16 +26,17 @@ class IsolatedCodeGenTests(CodegenTestCase):
         false_lbl = self.Label()
         expected = [
             ('RESUME', 0, 0),
+            ('ANNOTATIONS_PLACEHOLDER', None),
             ('LOAD_CONST', 0, 1),
             ('TO_BOOL', 0, 1),
             ('POP_JUMP_IF_FALSE', false_lbl := self.Label(), 1),
-            ('LOAD_CONST', 1, 1),
+            ('LOAD_CONST', 1, 1),  # 42
             ('JUMP_NO_INTERRUPT', exit_lbl := self.Label()),
             false_lbl,
-            ('LOAD_CONST', 2, 1),
+            ('LOAD_CONST', 2, 1),  # 24
             exit_lbl,
             ('POP_TOP', None),
-            ('LOAD_CONST', 3),
+            ('LOAD_CONST', 1),
             ('RETURN_VALUE', None),
         ]
         self.codegen_test(snippet, expected)
@@ -45,6 +46,7 @@ class IsolatedCodeGenTests(CodegenTestCase):
         false_lbl = self.Label()
         expected = [
             ('RESUME', 0, 0),
+            ('ANNOTATIONS_PLACEHOLDER', None),
             ('LOAD_NAME', 0, 1),
             ('GET_ITER', None, 1),
             loop_lbl := self.Label(),
@@ -59,7 +61,7 @@ class IsolatedCodeGenTests(CodegenTestCase):
             ('JUMP', loop_lbl),
             exit_lbl,
             ('END_FOR', None),
-            ('POP_TOP', None),
+            ('POP_ITER', None),
             ('LOAD_CONST', 0),
             ('RETURN_VALUE', None),
         ]
@@ -73,6 +75,7 @@ class IsolatedCodeGenTests(CodegenTestCase):
         expected = [
             # Function definition
             ('RESUME', 0),
+            ('ANNOTATIONS_PLACEHOLDER', None),
             ('LOAD_CONST', 0),
             ('MAKE_FUNCTION', None),
             ('STORE_NAME', 0),
@@ -82,7 +85,7 @@ class IsolatedCodeGenTests(CodegenTestCase):
                 # Function body
                 ('RESUME', 0),
                 ('LOAD_FAST', 0),
-                ('LOAD_CONST', 1),
+                ('LOAD_CONST', 42),
                 ('BINARY_OP', 0),
                 ('RETURN_VALUE', None),
                 ('LOAD_CONST', 0),
@@ -106,6 +109,7 @@ class IsolatedCodeGenTests(CodegenTestCase):
         expected = [
             # Function definition
             ('RESUME', 0),
+            ('ANNOTATIONS_PLACEHOLDER', None),
             ('LOAD_CONST', 0),
             ('MAKE_FUNCTION', None),
             ('STORE_NAME', 0),
@@ -125,9 +129,9 @@ class IsolatedCodeGenTests(CodegenTestCase):
                 [
                     ('RESUME', 0),
                     ('NOP', None),
-                    ('LOAD_CONST', 1),
+                    ('LOAD_CONST', 12),
                     ('RETURN_VALUE', None),
-                    ('LOAD_CONST', 0),
+                    ('LOAD_CONST', 1),
                     ('RETURN_VALUE', None),
                 ],
                 [
@@ -141,7 +145,7 @@ class IsolatedCodeGenTests(CodegenTestCase):
                     ('LOAD_CONST', 4),
                     ('STORE_FAST', 3),
                     ('NOP', None),
-                    ('LOAD_CONST', 5),
+                    ('LOAD_CONST', 42),
                     ('RETURN_VALUE', None),
                     ('LOAD_CONST', 0),
                     ('RETURN_VALUE', None),