diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_catalog_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_catalog_service.py
index b8e8ed7bf3ac..55f02959e760 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_catalog_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_catalog_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_completion_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_completion_service.py
index b2b59a22e170..8ef5eb6b801d 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_completion_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_completion_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_control_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_control_service.py
index f88c790509f6..2235d041199a 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_control_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_control_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_prediction_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_prediction_service.py
index 6b3616321ede..bf1b0c0ef777 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_prediction_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_prediction_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_product_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_product_service.py
index 332e890c0f40..49fc206b4290 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_product_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_product_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_search_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_search_service.py
index 6248d242163d..2f423854539b 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_search_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_search_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_serving_config_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_serving_config_service.py
index 95cc0bac104a..24ba8b3f51af 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_serving_config_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_serving_config_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_user_event_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_user_event_service.py
index 2de46fb5074a..63ef15a7bd55 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_user_event_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2/test_user_event_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_catalog_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_catalog_service.py
index 4d0411363ad4..cf0219c9242d 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_catalog_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_catalog_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_completion_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_completion_service.py
index 9ec5012a19d6..15cafc140685 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_completion_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_completion_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_control_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_control_service.py
index f4044454369e..5b76d3264eba 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_control_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_control_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_model_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_model_service.py
index 8f791fb608d7..d89bf30cd4c4 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_model_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_model_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_prediction_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_prediction_service.py
index e826f0bf2f27..f401bf01cfe8 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_prediction_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_prediction_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_product_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_product_service.py
index dee97e6634e8..d570fb860d3c 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_product_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_product_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_search_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_search_service.py
index d6e52c440aaf..ae6d9bbdc03c 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_search_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_search_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_serving_config_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_serving_config_service.py
index 9b14b428e6a1..198d25dee2b2 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_serving_config_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_serving_config_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_user_event_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_user_event_service.py
index 9a567eaae910..c5c8d79e2d3a 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_user_event_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2alpha/test_user_event_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_catalog_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_catalog_service.py
index 9d3e53e135c7..08bbce6dd5fb 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_catalog_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_catalog_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_completion_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_completion_service.py
index be454418324e..cbdaa0d11238 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_completion_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_completion_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_control_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_control_service.py
index 23d4fcbd3762..38668e3ed436 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_control_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_control_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_model_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_model_service.py
index 1d0db4858894..546b1ccc4ed9 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_model_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_model_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_prediction_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_prediction_service.py
index 4d3004a7b1f3..e7deb5366c7f 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_prediction_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_prediction_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_product_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_product_service.py
index 53062d9552ed..95c8ed06f6a1 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_product_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_product_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_search_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_search_service.py
index 694794d09f18..4db8a3875168 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_search_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_search_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_serving_config_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_serving_config_service.py
index 9a28b9f6ee33..b5ab62dd774b 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_serving_config_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_serving_config_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math
diff --git a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_user_event_service.py b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_user_event_service.py
index 030afbc47362..ad024b95e2f3 100644
--- a/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_user_event_service.py
+++ b/packages/google-cloud-retail/tests/unit/gapic/retail_v2beta/test_user_event_service.py
@@ -18,8 +18,8 @@
 # try/except added for compatibility with python < 3.8
 try:
     from unittest import mock
-    from unittest.mock import AsyncMock
-except ImportError:
+    from unittest.mock import AsyncMock  # pragma: NO COVER
+except ImportError:  # pragma: NO COVER
     import mock
 
 import math