Add Set Endpoint Samples [(#2497)](GoogleCloudPlatform/python-docs-samples#2497)

* Add Set Endpoint Samples

* Add additional test result option

* Sample Request update

* Add filter_

Author: nnegrey

samples/snippets/cloud-client/v1/set_endpoint.py

@@ -0,0 +1,40 @@
+# Copyright 2019 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 set_endpoint():
+    """Change your endpoint"""
+    # [START language_set_endpoint]
+    # Imports the Google Cloud client library
+    from google.cloud import language
+
+    client_options = {'api_endpoint': 'eu-language.googleapis.com:443'}
+
+    # Instantiates a client
+    client = language.LanguageServiceClient(client_options=client_options)
+    # [END language_set_endpoint]
+
+    # The text to analyze
+    document = language.types.Document(
+        content='Hello, world!',
+        type=language.enums.Document.Type.PLAIN_TEXT)
+
+    # Detects the sentiment of the text
+    sentiment = client.analyze_sentiment(document=document).document_sentiment
+
+    print('Sentiment: {}, {}'.format(sentiment.score, sentiment.magnitude))
+
+
+if __name__ == '__main__':
+    set_endpoint()

samples/snippets/cloud-client/v1/set_endpoint_test.py

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+# Copyright 2019 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 set_endpoint
+
+
+def test_set_endpoint(capsys):
+    set_endpoint.set_endpoint()
+
+    out, _ = capsys.readouterr()
+    assert 'Sentiment' in out