diff --git a/samples/snippets/delete_model_test.py b/samples/snippets/delete_model_test.py
index 4b68a647..8721e14b 100644
--- a/samples/snippets/delete_model_test.py
+++ b/samples/snippets/delete_model_test.py
@@ -16,7 +16,7 @@
 
 import delete_model
 
-PROJECT_ID = os.environ["GCLOUD_PROJECT"]
+PROJECT_ID = os.environ["AUTOML_PROJECT_ID"]
 
 
 def test_delete_model(capsys):
diff --git a/samples/snippets/deploy_model_test.py b/samples/snippets/deploy_model_test.py
index 8a202618..d8a72f1e 100644
--- a/samples/snippets/deploy_model_test.py
+++ b/samples/snippets/deploy_model_test.py
@@ -18,7 +18,7 @@
 
 import deploy_model
 
-PROJECT_ID = os.environ["GCLOUD_PROJECT"]
+PROJECT_ID = os.environ["AUTOML_PROJECT_ID"]
 MODEL_ID = "TRL0000000000000000000"
 
 
diff --git a/samples/snippets/get_model_evaluation_test.py b/samples/snippets/get_model_evaluation_test.py
index d467332d..40a88a82 100644
--- a/samples/snippets/get_model_evaluation_test.py
+++ b/samples/snippets/get_model_evaluation_test.py
@@ -19,8 +19,8 @@
 
 import get_model_evaluation
 
-PROJECT_ID = os.environ["GCLOUD_PROJECT"]
-MODEL_ID = "TEN1499896588007374848"
+PROJECT_ID = os.environ["AUTOML_PROJECT_ID"]
+MODEL_ID = os.environ["ENTITY_EXTRACTION_MODEL_ID"]
 
 
 @pytest.fixture(scope="function")
diff --git a/samples/snippets/get_model_test.py b/samples/snippets/get_model_test.py
index 176161bf..c146e18c 100644
--- a/samples/snippets/get_model_test.py
+++ b/samples/snippets/get_model_test.py
@@ -16,8 +16,8 @@
 
 import get_model
 
-PROJECT_ID = os.environ["GCLOUD_PROJECT"]
-MODEL_ID = "TEN1499896588007374848"
+PROJECT_ID = os.environ["AUTOML_PROJECT_ID"]
+MODEL_ID = os.environ["ENTITY_EXTRACTION_MODEL_ID"]
 
 
 def test_get_model(capsys):
diff --git a/samples/snippets/language_sentiment_analysis_create_dataset.py b/samples/snippets/language_sentiment_analysis_create_dataset.py
new file mode 100644
index 00000000..2caae065
--- /dev/null
+++ b/samples/snippets/language_sentiment_analysis_create_dataset.py
@@ -0,0 +1,50 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+def create_dataset(project_id, display_name):
+    """Create a dataset."""
+    # [START automl_language_sentiment_analysis_create_dataset]
+    from google.cloud import automl
+
+    # TODO(developer): Uncomment and set the following variables
+    # project_id = "YOUR_PROJECT_ID"
+    # display_name = "YOUR_DATASET_NAME"
+
+    client = automl.AutoMlClient()
+
+    # A resource that represents Google Cloud Platform location.
+    project_location = client.location_path(project_id, "us-central1")
+
+    # Each dataset requires a sentiment score with a defined sentiment_max
+    # value, for more information on TextSentimentDatasetMetadata, see:
+    # https://cloud.google.com/natural-language/automl/docs/prepare#sentiment-analysis
+    # https://cloud.google.com/automl/docs/reference/rpc/google.cloud.automl.v1#textsentimentdatasetmetadata
+    metadata = automl.types.TextSentimentDatasetMetadata(
+        sentiment_max=4
+    )  # Possible max sentiment score: 1-10
+
+    dataset = automl.types.Dataset(
+        display_name=display_name, text_sentiment_dataset_metadata=metadata
+    )
+
+    # Create a dataset with the dataset metadata in the region.
+    response = client.create_dataset(project_location, dataset)
+
+    created_dataset = response.result()
+
+    # Display the dataset information
+    print("Dataset name: {}".format(created_dataset.name))
+    print("Dataset id: {}".format(created_dataset.name.split("/")[-1]))
+    # [END automl_language_sentiment_analysis_create_dataset]
diff --git a/samples/snippets/language_sentiment_analysis_create_dataset_test.py b/samples/snippets/language_sentiment_analysis_create_dataset_test.py
new file mode 100644
index 00000000..239a154f
--- /dev/null
+++ b/samples/snippets/language_sentiment_analysis_create_dataset_test.py
@@ -0,0 +1,41 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import datetime
+import os
+
+from google.cloud import automl
+
+import language_sentiment_analysis_create_dataset
+
+
+PROJECT_ID = os.environ["AUTOML_PROJECT_ID"]
+
+
+def test_sentiment_analysis_create_dataset(capsys):
+    dataset_name = "test_" + datetime.datetime.now().strftime("%Y%m%d%H%M%S")
+    language_sentiment_analysis_create_dataset.create_dataset(
+        PROJECT_ID, dataset_name
+    )
+    out, _ = capsys.readouterr()
+    assert "Dataset id: " in out
+
+    # Delete the created dataset
+    dataset_id = out.splitlines()[1].split()[2]
+    client = automl.AutoMlClient()
+    dataset_full_id = client.dataset_path(
+        PROJECT_ID, "us-central1", dataset_id
+    )
+    response = client.delete_dataset(dataset_full_id)
+    response.result()
diff --git a/samples/snippets/language_sentiment_analysis_create_model.py b/samples/snippets/language_sentiment_analysis_create_model.py
new file mode 100644
index 00000000..6eca50a7
--- /dev/null
+++ b/samples/snippets/language_sentiment_analysis_create_model.py
@@ -0,0 +1,43 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+def create_model(project_id, dataset_id, display_name):
+    """Create a model."""
+    # [START automl_language_sentiment_analysis_create_model]
+    from google.cloud import automl
+
+    # TODO(developer): Uncomment and set the following variables
+    # project_id = "YOUR_PROJECT_ID"
+    # dataset_id = "YOUR_DATASET_ID"
+    # display_name = "YOUR_MODEL_NAME"
+
+    client = automl.AutoMlClient()
+
+    # A resource that represents Google Cloud Platform location.
+    project_location = client.location_path(project_id, "us-central1")
+    # Leave model unset to use the default base model provided by Google
+    metadata = automl.types.TextSentimentModelMetadata()
+    model = automl.types.Model(
+        display_name=display_name,
+        dataset_id=dataset_id,
+        text_sentiment_model_metadata=metadata,
+    )
+
+    # Create a model with the model metadata in the region.
+    response = client.create_model(project_location, model)
+
+    print("Training operation name: {}".format(response.operation.name))
+    print("Training started...")
+    # [END automl_language_sentiment_analysis_create_model]
diff --git a/samples/snippets/language_sentiment_analysis_create_model_test.py b/samples/snippets/language_sentiment_analysis_create_model_test.py
new file mode 100644
index 00000000..cbb79533
--- /dev/null
+++ b/samples/snippets/language_sentiment_analysis_create_model_test.py
@@ -0,0 +1,37 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+
+from google.cloud import automl
+import pytest
+
+import language_sentiment_analysis_create_model
+
+PROJECT_ID = os.environ["AUTOML_PROJECT_ID"]
+DATASET_ID = os.environ["SENTIMENT_ANALYSIS_DATASET_ID"]
+
+
+@pytest.mark.slow
+def test_sentiment_analysis_create_model(capsys):
+    language_sentiment_analysis_create_model.create_model(
+        PROJECT_ID, DATASET_ID, "object_test_create_model"
+    )
+    out, _ = capsys.readouterr()
+    assert "Training started" in out
+
+    # Cancel the operation
+    operation_id = out.split("Training operation name: ")[1].split("\n")[0]
+    client = automl.AutoMlClient()
+    client.transport._operations_client.cancel_operation(operation_id)
diff --git a/samples/snippets/language_sentiment_analysis_predict.py b/samples/snippets/language_sentiment_analysis_predict.py
new file mode 100644
index 00000000..cf459142
--- /dev/null
+++ b/samples/snippets/language_sentiment_analysis_predict.py
@@ -0,0 +1,51 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+def predict(project_id, model_id, content):
+    """Predict."""
+    # [START automl_language_sentiment_analysis_predict]
+    from google.cloud import automl
+
+    # TODO(developer): Uncomment and set the following variables
+    # project_id = "YOUR_PROJECT_ID"
+    # model_id = "YOUR_MODEL_ID"
+    # content = "text to predict"
+
+    prediction_client = automl.PredictionServiceClient()
+
+    # Get the full path of the model.
+    model_full_id = prediction_client.model_path(
+        project_id, "us-central1", model_id
+    )
+
+    # Supported mime_types: 'text/plain', 'text/html'
+    # https://cloud.google.com/automl/docs/reference/rpc/google.cloud.automl.v1#textsnippet
+    text_snippet = automl.types.TextSnippet(
+        content=content, mime_type="text/plain"
+    )
+    payload = automl.types.ExamplePayload(text_snippet=text_snippet)
+
+    response = prediction_client.predict(model_full_id, payload)
+
+    for annotation_payload in response.payload:
+        print(
+            "Predicted class name: {}".format(annotation_payload.display_name)
+        )
+        print(
+            "Predicted sentiment score: {}".format(
+                annotation_payload.text_sentiment.sentiment
+            )
+        )
+    # [END automl_language_sentiment_analysis_predict]
diff --git a/samples/snippets/language_sentiment_analysis_predict_test.py b/samples/snippets/language_sentiment_analysis_predict_test.py
new file mode 100644
index 00000000..d4fffc7f
--- /dev/null
+++ b/samples/snippets/language_sentiment_analysis_predict_test.py
@@ -0,0 +1,43 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+
+from google.cloud import automl
+import pytest
+
+import language_sentiment_analysis_predict
+
+PROJECT_ID = os.environ["AUTOML_PROJECT_ID"]
+MODEL_ID = os.environ["SENTIMENT_ANALYSIS_MODEL_ID"]
+
+
+@pytest.fixture(scope="function")
+def verify_model_state():
+    client = automl.AutoMlClient()
+    model_full_id = client.model_path(PROJECT_ID, "us-central1", MODEL_ID)
+
+    model = client.get_model(model_full_id)
+    if model.deployment_state == automl.enums.Model.DeploymentState.UNDEPLOYED:
+        # Deploy model if it is not deployed
+        response = client.deploy_model(model_full_id)
+        response.result()
+
+
+def test_predict(capsys, verify_model_state):
+    verify_model_state
+    text = "Hopefully this Claritin kicks in soon"
+    language_sentiment_analysis_predict.predict(PROJECT_ID, MODEL_ID, text)
+    out, _ = capsys.readouterr()
+    assert "Predicted sentiment score: " in out
diff --git a/samples/snippets/list_model_evaluations_test.py b/samples/snippets/list_model_evaluations_test.py
index 2acad83e..839540bd 100644
--- a/samples/snippets/list_model_evaluations_test.py
+++ b/samples/snippets/list_model_evaluations_test.py
@@ -17,8 +17,8 @@
 import list_model_evaluations
 
 
-PROJECT_ID = os.environ["GCLOUD_PROJECT"]
-MODEL_ID = "TEN1499896588007374848"
+PROJECT_ID = os.environ["AUTOML_PROJECT_ID"]
+MODEL_ID = os.environ["ENTITY_EXTRACTION_MODEL_ID"]
 
 
 def test_list_get_eval_model(capsys):
diff --git a/samples/snippets/list_models_test.py b/samples/snippets/list_models_test.py
index adb64190..10d7c8da 100644
--- a/samples/snippets/list_models_test.py
+++ b/samples/snippets/list_models_test.py
@@ -16,7 +16,7 @@
 
 import list_models
 
-PROJECT_ID = os.environ["GCLOUD_PROJECT"]
+PROJECT_ID = os.environ["AUTOML_PROJECT_ID"]
 
 
 def test_list_get_eval_model(capsys):
diff --git a/samples/snippets/translate_create_dataset.py b/samples/snippets/translate_create_dataset.py
index 7afe64ac..8f468679 100644
--- a/samples/snippets/translate_create_dataset.py
+++ b/samples/snippets/translate_create_dataset.py
@@ -26,6 +26,8 @@ def create_dataset(project_id, display_name):
 
     # A resource that represents Google Cloud Platform location.
     project_location = client.location_path(project_id, "us-central1")
+    # For a list of supported languages, see:
+    # https://cloud.google.com/translate/automl/docs/languages
     dataset_metadata = automl.types.TranslationDatasetMetadata(
         source_language_code="en", target_language_code="ja"
     )
diff --git a/samples/snippets/translate_create_dataset_test.py b/samples/snippets/translate_create_dataset_test.py
index 1129baba..9011da97 100644
--- a/samples/snippets/translate_create_dataset_test.py
+++ b/samples/snippets/translate_create_dataset_test.py
@@ -20,7 +20,7 @@
 import translate_create_dataset
 
 
-PROJECT_ID = os.environ["GCLOUD_PROJECT"]
+PROJECT_ID = os.environ["AUTOML_PROJECT_ID"]
 
 
 def test_translate_create_dataset(capsys):
diff --git a/samples/snippets/translate_create_model_test.py b/samples/snippets/translate_create_model_test.py
index e055d668..b564d7e0 100644
--- a/samples/snippets/translate_create_model_test.py
+++ b/samples/snippets/translate_create_model_test.py
@@ -18,8 +18,8 @@
 
 import translate_create_model
 
-PROJECT_ID = os.environ["GCLOUD_PROJECT"]
-DATASET_ID = "TRL3876092572857648864"
+PROJECT_ID = os.environ["AUTOML_PROJECT_ID"]
+DATASET_ID = os.environ["TRANSLATION_DATASET_ID"]
 
 
 def test_translate_create_model(capsys):
diff --git a/samples/snippets/translate_predict_test.py b/samples/snippets/translate_predict_test.py
index 32134ef1..aabfd05b 100644
--- a/samples/snippets/translate_predict_test.py
+++ b/samples/snippets/translate_predict_test.py
@@ -19,8 +19,8 @@
 
 import translate_predict
 
-PROJECT_ID = os.environ["GCLOUD_PROJECT"]
-MODEL_ID = "TRL3128559826197068699"
+PROJECT_ID = os.environ["AUTOML_PROJECT_ID"]
+MODEL_ID = os.environ["TRANSLATION_MODEL_ID"]
 
 
 @pytest.fixture(scope="function")
diff --git a/samples/snippets/undeploy_model_test.py b/samples/snippets/undeploy_model_test.py
index caaa78f0..49e9b130 100644
--- a/samples/snippets/undeploy_model_test.py
+++ b/samples/snippets/undeploy_model_test.py
@@ -18,7 +18,7 @@
 
 import undeploy_model
 
-PROJECT_ID = os.environ["GCLOUD_PROJECT"]
+PROJECT_ID = os.environ["AUTOML_PROJECT_ID"]
 MODEL_ID = "TRL0000000000000000000"
 
 
diff --git a/samples/snippets/vision_classification_create_dataset.py b/samples/snippets/vision_classification_create_dataset.py
index c41d67cc..8981a795 100644
--- a/samples/snippets/vision_classification_create_dataset.py
+++ b/samples/snippets/vision_classification_create_dataset.py
@@ -30,6 +30,7 @@ def create_dataset(project_id, display_name):
     # Types:
     # MultiLabel: Multiple labels are allowed for one example.
     # MultiClass: At most one label is allowed per example.
+    # https://cloud.google.com/automl/docs/reference/rpc/google.cloud.automl.v1#classificationtype
     metadata = automl.types.ImageClassificationDatasetMetadata(
         classification_type=automl.enums.ClassificationType.MULTILABEL
     )
diff --git a/samples/snippets/vision_classification_create_dataset_test.py b/samples/snippets/vision_classification_create_dataset_test.py
index af4a5636..763eef82 100644
--- a/samples/snippets/vision_classification_create_dataset_test.py
+++ b/samples/snippets/vision_classification_create_dataset_test.py
@@ -21,7 +21,7 @@
 import vision_classification_create_dataset
 
 
-PROJECT_ID = os.environ["GCLOUD_PROJECT"]
+PROJECT_ID = os.environ["AUTOML_PROJECT_ID"]
 
 
 @pytest.mark.slow
diff --git a/samples/snippets/vision_classification_create_model.py b/samples/snippets/vision_classification_create_model.py
index 60e7af52..30505614 100644
--- a/samples/snippets/vision_classification_create_model.py
+++ b/samples/snippets/vision_classification_create_model.py
@@ -28,6 +28,9 @@ def create_model(project_id, dataset_id, display_name):
     # A resource that represents Google Cloud Platform location.
     project_location = client.location_path(project_id, "us-central1")
     # Leave model unset to use the default base model provided by Google
+    # train_budget_milli_node_hours: The actual train_cost will be equal or
+    # less than this value.
+    # https://cloud.google.com/automl/docs/reference/rpc/google.cloud.automl.v1#imageclassificationmodelmetadata
     metadata = automl.types.ImageClassificationModelMetadata(
         train_budget_milli_node_hours=24000
     )
diff --git a/samples/snippets/vision_classification_create_model_test.py b/samples/snippets/vision_classification_create_model_test.py
index 6e3ee8b0..aea9926a 100644
--- a/samples/snippets/vision_classification_create_model_test.py
+++ b/samples/snippets/vision_classification_create_model_test.py
@@ -19,8 +19,8 @@
 
 import vision_classification_create_model
 
-PROJECT_ID = os.environ["GCLOUD_PROJECT"]
-DATASET_ID = "ICN3946265060617537378"
+PROJECT_ID = os.environ["AUTOML_PROJECT_ID"]
+DATASET_ID = os.environ["VISION_CLASSIFICATION_DATASET_ID"]
 
 
 @pytest.mark.slow
diff --git a/samples/snippets/vision_classification_deploy_model_node_count.py b/samples/snippets/vision_classification_deploy_model_node_count.py
index fae5bae4..b89cec73 100644
--- a/samples/snippets/vision_classification_deploy_model_node_count.py
+++ b/samples/snippets/vision_classification_deploy_model_node_count.py
@@ -25,6 +25,9 @@ def deploy_model(project_id, model_id):
     client = automl.AutoMlClient()
     # Get the full path of the model.
     model_full_id = client.model_path(project_id, "us-central1", model_id)
+
+    # node count determines the number of nodes to deploy the model on.
+    # https://cloud.google.com/automl/docs/reference/rpc/google.cloud.automl.v1#imageclassificationmodeldeploymentmetadata
     metadata = automl.types.ImageClassificationModelDeploymentMetadata(
         node_count=2
     )
diff --git a/samples/snippets/vision_classification_deploy_model_node_count_test.py b/samples/snippets/vision_classification_deploy_model_node_count_test.py
index 46570928..3f6ff430 100644
--- a/samples/snippets/vision_classification_deploy_model_node_count_test.py
+++ b/samples/snippets/vision_classification_deploy_model_node_count_test.py
@@ -18,7 +18,7 @@
 
 import vision_classification_deploy_model_node_count
 
-PROJECT_ID = os.environ["GCLOUD_PROJECT"]
+PROJECT_ID = os.environ["AUTOML_PROJECT_ID"]
 MODEL_ID = "ICN0000000000000000000"
 
 
diff --git a/samples/snippets/vision_classification_predict.py b/samples/snippets/vision_classification_predict.py
index 98cfc9f8..c42606cc 100644
--- a/samples/snippets/vision_classification_predict.py
+++ b/samples/snippets/vision_classification_predict.py
@@ -39,6 +39,7 @@ def predict(project_id, model_id, file_path):
 
     # params is additional domain-specific parameters.
     # score_threshold is used to filter the result
+    # https://cloud.google.com/automl/docs/reference/rpc/google.cloud.automl.v1#predictrequest
     params = {"score_threshold": "0.8"}
 
     response = prediction_client.predict(model_full_id, payload, params)
diff --git a/samples/snippets/vision_classification_predict_test.py b/samples/snippets/vision_classification_predict_test.py
index b9aabccd..9df9c911 100644
--- a/samples/snippets/vision_classification_predict_test.py
+++ b/samples/snippets/vision_classification_predict_test.py
@@ -19,8 +19,8 @@
 
 import vision_classification_predict
 
-PROJECT_ID = os.environ["GCLOUD_PROJECT"]
-MODEL_ID = "ICN7383667271543079510"
+PROJECT_ID = os.environ["AUTOML_PROJECT_ID"]
+MODEL_ID = os.environ["VISION_CLASSIFICATION_MODEL_ID"]
 
 
 @pytest.fixture(scope="function")